Correcting An Electrical Commercial...Residence?!?
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- čas přidán 17. 05. 2024
- Electric Pro Academy - Real skills to make real money.
Synopsis:
Residences in the United States typically have a single-phase 120-240V system for electrical power, but somehow this house was given a hybrid three-phase 120-208V system with some single-phase 120-240V power as well?! Not only did Jefferson identify the anomaly, which was missed by an inspector and an engineer, but they were also tasked with remediating the issue and upgrading the service to 400-amps for this large home with electric vehicle charging needs. Here’s how the pros safely fix a high-power, utility-related situation with efficiency & thoroughness.
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Products We’d Recommend:
*EPRO endorses pro-level tools & materials, and receives a small commission for purchases through our links from Amazon & other affiliate programs. We’d be happy to recommend more cost-effective products for DIYers and low-frequency users if you engage with us in the comment section!
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National Electrical Code (NEC) referenced in this video:
Free Access Here: www.nfpa.org/codes-and-standa...
[] Overhead Service Drop height [NEC NEC 230.24(B), though local AHJ may adjust]
[] Grounding rod depth [NEC 250.53(A)(4)]
[] 1st means of disconnect [NEC 230.70]
[] Maximum overcurrent device height [NEC 240.24(A)]
[] Support & conduit body between 3' [NEC 352.30 and Table 352.30]
[] Expansion Fittings [NEC 352.30, 352.44 and Table 352.44]
[] 500 kcmil sizing vs. utility code [NEC 310.16, though local AHJ may adjust]
AES Goldbook Free Access Here (Note: AES is the AHJ for Indiana, not nationwide): www.aesindiana.com/goldbook-e...
[] Meter mounting height
Outline:
0:00 - Introduction
2:54 - Disconnecting Utility Power
9:13 - Prepping The New 400-Amp Meter Cabinet
10:29 - Grounding A 400-Amp Service
11:42 - Drilling For The New Meter Cabinet
13:02 - Removing A Bolted Meter
13:37 - Dismantling Interior Electrical Disconnects
14:58 - Dismantling Exterior Electrical Disconnects
17:50 - Measuring For Interior-Exterior Alignment
14:58 - Mounting The New Meter Cabinet
22:20 - Mounting Conduit Fittings
27:57 - Coring Through The Wall
32:41 - Mounting Exterior Conduit
41:04 - Prepping The Meter Cabinet For Wiring
45:10 - Building The Service Riser
52:41 - Running Service Conductors Through Wall
53:24 - Running The Grounding Electrode Conductor
57:25 - Running Service Riser Conductors
1:02:11 - Calling The Utility For Reconnection
1:03:11 - Landing Meter Cabinet Wires
1:08:55 - Calling The Utility For Reconnection Again
1:15:13 - Wrapping Up The Meter Cabinet
1:18:42 - Landing Wire In The Service Panels
1:20:49 - Running Wire Underground To A Sub-Panel
1:22:20 - Final Wrap-Up
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Jefferson Electric installs and services residential, commercial, solar, and Tesla systems in Indianapolis, IN.
www.jeffersonelectricllc.com/
/ jeffersonelectric
/ jefferson-electric-llc
He's on a ladder, cutting live utility wires in the rain. He's worried about his tools rusting. My kind of guy.
im electrian and im shocked by him guy has no fear
And what bozo would ever REMOVE 3 phase power?? Most people WISH they had 3 phase power (ok, not most, but anyone that wants to run large woodworking or metalworking equipment, or have multiple ev's charging). I've watched 2 or 3 of this guy's videos, and it's just upcharge upcharge upcharge for everything! I'm pretty sure if you sent this guy to a single woman in a brand new house, he'd come up with at least 4 or 5 grand of "stuff that needs to be done". More and more tradespeople are becoming sleazy scammers up selling dumb people all the time, and this guy is just proliferating and popularizing that culture.
His gloves don't even seem that electrically insulating as you can see later when he uses his phone with them still on. 😆
@@gorak9000 I kind of agree with this. What happens when they want to use a massive condensing unit for their air conditioning needs? 3-phase is really nice for this!
@@fitybux4664 Haha, like a 15 ton commercial package unit a restaurant or store would use? With 3 stages of cooling? You could turn your house into an ice factory and sell bagged ice out of the garage. I think there's huge markup in bagged ice - lots of profit to be made there!
Getting rid of the 3 phase almost makes me cry. I live in New Zealand. When I had my 400 volt 3 phase put in was the proudest day of my life.
what do you run that you need it
On a house? What for?
@@B1gRedOutdoor I have a workshop behind my house.
@@gregkeeyako workshop in behind.
when cutting a live line wire, always have control of the live end wire you are cutting with one hand. you see as he cuts the wire, he doesn't, and an open ended live wire springs towards him. that wire can spring any direction, including towards a grounded bare wire and arc flash in your face. see about 4:10
I did exactly opposite of this to a guys house. He had single phase and three phase at his house. Three phase was for his machine shop in the garage. I disconnected the single phase and ran it off the 3 phase avoiding the high leg. Now he just has the one electric bill and can still use his machine shop.
yeah, I think it was rather stupid and the utility providers are braindead, especially with the big (idiotic push) for electric vehicles(they want you to take pubic transportation and be slaves). Although I do say high leg delta spells disaster for residential hacks, I blame the utility for even providing such, right back to when that hackery was installed as new work.
@@throttlebottle5906 Yeah corner grounded delta would be better for 3ph car charging
@@TheChipmunk2008 I would bet big $$ that this is/was open delta 3-phase service with only two transformers.
@@throttlebottle5906Utility here regularly provides center tapped delta to houses. Large portions of the primary wiring are corner grounded with only 2 wires, 3rd phase goes through the ground. No way to balance with single phase loads because you can't attach a transformer to the ground. So all houses on those streets are 3 phase. Some are Delta on the secondary side, some are wye. Power company will not provide wye unless requested and at least a 200 amp service, even then they would rather install Delta. It's just a non issue if clearly marked, which our utility requires. My house right now has 100a open Delta, we are going to upgrade to at least 200 amps, and our house is in an area that is otherwise entirely industrial zoned, aside from 3 houses, so the power company will give us wye service, since its already there. Entire reason for choosing the house that we did was the 3 phase power. Nothing else was a factor in buying a house.
Watching him struggle to put the 500kcmil was a pretty good show. Mule tape in the conduit, assemble the weather-head on the ground, make a point on the end of the line, lube it up and pull from top to bottom.
This channel is what new electricians needed in youtube. "In the field" videos are the way to go. Tx Joel
You have to be out of your mind to use an aluminum ladder. Been retired from my business for 30 years , but even in "the old days" we used ONLY fibreglass ladders. Still in my old age I don't own an aluminum ladder
I’m a home inspector in Indy. I’ll be recommending y’all to my clients. 👍
Thank you @markwhite7437!
Wow, interesting to see the huge dimensions used in US installations but that service drop sure looks like a toilet drain pipe :O Over here in Sweden we typically have 400/230V three phase and a 3 x 16 A or 3 x 25 A service would be typical for a residential unit. That would be about equivalent to a 60 A or 100 A split phase US service, considering we use IEC rated fuses/breakers where the rating is the maximum continuous while the US has another style ratings were fuses/breakers need to be rated 125% of the continuous load. In any case 240 V 400 A is quite impressive for residential use. I can't imagine needing upwards of 100 kW at home...
Similar story in the UK.
That reconnection call 👍 I appreciate you showing that! That was such a first class phone call for someone who wasnt getting what they wanted.
Agreed. He handled the very well!
When I saw that humungous meter box I wondered why it was so big, but after seeing how the connections had to be made with that massive wire, I realized that he needed the space to do it. Aesthetically it's not great but it's necessary, and once the cosmetic work is done it won't be too much of a sore thumb.
I'm not an electrician, but I find this channel entertaining and informative.
You might like an english electric channel called “artisan electrics”
I’m interested on learning about US/Canadian electrical installations.
I have the attention span of a fruit fly, and when I saw that the video was almost an hour and a half I thought, "No way", but I got hooked! And as a non-electrician, I think I understood most of it!
@@Bobrogers99 their videos are quality. Worth getting a drink & snack to sit & watch.
8:19 If you’re not testing, you’re guessing…..
A saying that was taught to me by Mikey, an awesome HVAC guy.
👍🏻👍🏻
I understand the satisfaction you must get from completing a job like this one. As a construction superintendent (retired) I always counted on my electrical subs to be part of the top rung of my construction coordination crew. You look to be a credit to your trade. Good on you.
Where I live, we just do it ourselves. Buy what you need. Get everything connected. And just make the connections necessary from the drop to the service. Get power on..... that's the main thing. Call for inspection, and then the power company can come whenever.
Where do you live?
@@Anton-le7gd In a house.
Shockingly compelling video even for just a diy homeowner that would never touch any of this. Definitely going to feel more comfortable hiring out/keeping an eye on a similar job.
Gotta say I’ve met and encountered many Electrical contractors and you have to be the most chill and respectful one I’ve seen. If I lived out near your company I’d apply no problem.
You should have used plastic sheathing when coring through those exterior walls. In this case that red material is going to be leaching and staining for quite a while. Also it would be nice to have a clean rag to wipe off stuff that you're installing.
These are quality tips. Thanks for making me better, @DJaquithFL!
Excellent video! The only complaint I have with this one is the video cut short and we never got to see the finished product! I'm not an electrician, but watching your videos has increased my knowledge a great deal. I hope other electricians are watching and learning.
Your clean work and fine attention to detail are second to none. I wish we had your equivalent here in South Jersey!
Agreed. I was hoping to see the final connection
@@craigslaunwhite579 especially since he kinda mislead the guy on the phone, it didn’t look like a simple reconnect, might have needed a new anchor point higher up on the building and maybe longer triplex.
I always test my meter on a known live circuit before and after testing
absolutely vital
Request: I haven't checked your youtube page yet, but I would like to see you install a 1) tesla powerwall, 2) a generator, 3) a nema 14-50, 4) a solar power solution (a combination powerwall and solar power solution would be nice). I guess that's it. Maybe a well too. Thanks for your great videos.
Another thing... split phase is 180 degrees apart so the voltages directly add, but tapping off of 3 phase the phases are 120 degrees apart (as you mention) and without the math in that case the difference is 208 volts instead of 240. Most, but not all, 240 appliances will work properly on 208. Apartment buildings frequently do this. In the case of this house that's what they always had so there won't be any new problems. The Tesla charger will charge 208/240 or 13% slower than if it were on 240.
This is commonly misunderstood. They were working on a highleg open delta system with 2 transformers providing 3phase. The primary transformer will be 240v with a grounded center tap. L1 to Neutral is 120v, L2 to Neutral is 120v, L3 (high leg) to Neutral is 208v. This is not a typical Y or corner grounded delta configuration.
As for the 120 degree comment, its hard to think about but L1 to L2 is still 180 degrees out of phase. There is a great video by Clough42 titled "Does a rotary phase converter actually make real 3-phase power? (120 Degrees)" that explains how the vector math works and even shows it using an Oscilloscope.
It feels like magic sometimes!
Cheers
Yea you really have to study vectors to understand why certain voltages dont add up when combined. He mentions each leg of the phase is 120 degrees apart alternating and it adds up to 240 volts but that is wrong. Single phase residential is simple because 180 degrees makes voltage add directly as you mentioned.
Thankyou. I was wondering about that.
@@mediadaemonI'm so confused....😁
Your comments at around 40:00 are spot on about doing more than just double checks on work done by ANYONE.
We're currently dealing with paying out a LOT (possibly with insurance if covered) for mold remediation and foundation waterproofing because a contractor, his subcontractors, AND the city inspectors all missed the proper waterproofing that should have been done around some below-grade parking and adjacent living space on a new build, and it's out of pocket/insurance if covered because the problem became a problem after 10 years due to it being southern California without a ton of annual rain to expose the problem. Same build, second house of a duplex, his subcontracted a/c guys missed that they installed an access for coil repairs that was inaccessible, and the inspectors missed it too.
It's frustrating but a great excuse to apologize to people when I feel the need to check on work that people are doing and stick my nose around.
Huge respect for the work you and your guys do, especially in the rain. Compelling video to watch. 400A for a residential property seems huge to me.
Always loved this old house but they never got detailed... This is awesome. Love your videos and nice work.
I always anchor my conduit within foot of the connector.....seeing your conduit, I would have put one in the center just for added support. you do excellent work....great job as always
Keep doing a good job take pride in your work people will remember that maybe 10 or 20 years down the road but they won't forget I had customers that wouldn't allow anyone else on their property even if I were busy they would wait
Thanks for including the phone call to the utility.
Very interesting... you're allowed to cut the connections and pull the meter. In the UK, we are, in our area, allowed to do the same (if registered electrical contractors with appropriate qualifications). That's quite rare in the UK though, but also a bit of a grey area, like you say, a wild wild west scenario, and yep, we get the same with smart meter fitters, who, when faced with an unusual meter, they're clueless!
And absolutely right re: rusty tools. It's odd that you're not allowed to reconnect if you're allowed to disconnect. We can obtain temporary seals from the DNO (distribution network operator, power company) and reinstate power to the building once our work is done.
We have to use insulated tools at all times. Ref: proving dead, here we have to use a proving unit (portable power source of around 240v or higher) to show the tester is working, then test the lines, then test the tester again... bit overkill, but better that than killing a worker!
Love watching electrical content from other countries. The USA is the most different from UK practice, but the rules of physics don't change, and 25 ohms is on a ground rod...quite a low value. Easily obtainable in wet/clay soil, but good luck in rocky areas!
By pull the meter, i mean the UK equivalent, which is to pull the service cutout fuse which is before the meter, and then open the terminal cover on the meter etc, although, confusingly, the meter is owned by a different company than the DNO these days, because.... ugh
Great comments.
Great video again!
If you have to pull stiff wires like these huge incoming wires through conduit, it may be easier to tape them together in a staggered manner to a pull-cord, to get a pointy end and then add some lubricant to them to make them slide easily through the bends in the conduit. Finally suck the pull-cord with a sponge attached with lubricant in it through the conduit to prime it and also to fiddle the cord through the conduit … happy pulling 🤓
In California we install the first 10' ground rod right under the main then 6' apart with exposed #6 armored ground and tied up to the gas main and not the water main because is mostly plastic water piping now..!
Not true around here in Wisconsin. the only steel gas Pipe is the PAINTED riser, everything else is Yellow PVC.
You guys are great! I like how you take the time to explain things, thank you for sharing so much of your knowledge!
This is by far one of the best panel changeout videos I've seen yet. Great editing, commentary, shots, nothing is overblown in 1 section.
I would've thought you had at least 500k subscribers. Excellent video!
Excellent video. Thanks for your time and excellent electrical information on this job!!
What amazing workmanship, and such an amazing video. Thank you kindly!
Man, I would love to have 3 phase in my garage. Seems like such a shame to get rid of it. I understand though, the new homeowner doesn't have a use for it.
Plus the equipment is obsolete and dangerous. It would cost way more to put new 3-phase in. And if the homeowner has no use for it...
@@fredashay If it was good enough to be there initially, it's probably good enough to be there now, unless you're a ripoff electrician looking to scam old single women with scare tactics into paying for work they don't need. Most contractors are sleazy jerks, and this guy is no exception
@@fredashay They have a good use for it, charging their electric car. It was dumb to remove it. Should have installed a 3 ph charger.
I so enjoy your channel. On top of all your knowledge and everything else that I have followed you one of several things as I would love to see a video on your shop I would liked what I’ve seen in the background. Thank you Kansas Dale.
Dude. I love your laughter...I subbed just for that...but damn, you're the Encyclopedia Britannica of electrical work. You're like a chill college professor!
Fantastic video. Hardest part of being an electrician is talking to the utility company in my opinion lol. Side note, I try to be really careful with my wording describing single phase residential power. each ungrounded conductor is “line 1” and “line 2” not “phase 1” and “phase 2”. each line is not 180 deg out of phase, though it can be plotted that way with neutral as the common reference b/c your leads switch directions). If it really was out of phase you would get 120v from each line to neutral and 0v between L1 and L2
Very informative, educational and also entertaining. Very nicely done.
I would love 3phase 120 but i run live sound and studio and home theater gear that can run off it through rack power distribution.
I should of also noted your channel is great to watch. Keep up the good work!!
Love the Bulldog PushMatic breakers in the old panel.
I thought we were going to have a three phase panel and a single phase panel. I wouldn't down grade the equipment like that.
came across this vid by total accident but I am glad I did. Good stuff!
That was absolutely informative and entertaining. Great solutions and expert execution. Impressive completion of the little details that make a difference. Thank you.
I would not cut the neutral of the 3phase feed, since it was shared service to the single phase feed! why? because there could poor binding and back-feed paths from service to service.
unhook all the power hot legs for both services, then cut the neutrals whilst praying the utility doesn't have a ground loop! they had exactly that issue close to here years ago, a huge ground loop about 10 mile radius and it was all relying upon grounding via homes/business/pole grounds, as things got unhooked and changes were made the neutral to ground potential increased, until it was so bad people were getting shocked all over and an industrial complex complained to them for years. they finally found and admitted to the issue.
I would expect no less from an hacked up residential setting .
This is one of the hardest working videos I've seen.
that is very nice work and boy do I hate working in the rain.. but you have some great soldiers working with you
To be cold, busy, and wet it really does take a lot of extra effort to stop and explain things to the camera. Appreciate the video. Only thing I didn’t like was 1/4” tap cons for the heavy cabinet
This is the first video I have seen of yours I like this stuff alot and you TEACH not just trade knowledge but code thanks brother you ever need another employee I would be honored!
Take care brother and thank you!
I watch all your videos bud. I just got my electric certification over the summer and I’d love to apprentice with you. Unfortunate I love in Pittsburgh Pennsylvania. But I learn from all your videos.
i like that you enforce safety....im not an electrician but i have learned about it enough and safety can never be enforced enough. great video
Code says, "Installation does not have to be efficient, it has to be safe"!
I was wondering about the weather head. Here in NJ the overhead utility line has to come in to the weather head at 2-3 ft. above the level of the roof. Are the restrictions different there/ Just wondering! Thanks!
Yeah on the lost neutral, our power company didnt hook the neutral up at the pole when my wife & I moved in our house. When we plugged our new dryer in we got 240 on all 120 outlets, that was fun😖.
Just stumbled across you from a DIY channel having you on. Happy to discover you work in the same area I live in. Should I ever need a licensed electrician, I think I know who to call for a quote first. 👍
I am impressed with your work and work ethics! My first two videos to your CZcams channel! Awesome! I have learned so much. You made it so clear about bonding and not bonding! Which I was weak in the understanding of the when, the where, and why! You are one good electrician! Do you have a video of the installation of a Manuel transfer switch for generator for crucial circuits making it easy for a homeowner to understand? DTDP transfer switch? Thank you for your gracious knowledge! Sincerely, Mark Martin
They make “fusion” pvc glue which is primer and glue in one. It is a clear glue and primer which is a plus.
undersized flat washers for the bolt/slot size combination. try using "fender washers" instead @ 42:34 on timeline.
otherwise upsize the fasteners to match the slots. perhaps to the semi-pre-punched knockouts? yes, you'll likely have to clean the holes up with a drill bit, file or other tool. stamped metal products one of one.
Love thus video man. Not the usual situation so it is fascinating.
The way I was taught is when looking at the fitting cover straight on with the one entrance to the bottom of your feet if the other entrance is to the right it's an "LR" to the left "LL" to the back is "LB"
LOL, 14:30 I owned a HVAC service before retiring. Hearing a sparky raise that he would be open to hire a HVAC guy makes me laugh. :) thank you for posting the videos and have a great day.
LOL @ 46:15 Dude inside trying to tighten while Joel is chatting outside
by 45:44, leave the threaded rod long, fasten it in place then cut off excess with saw( minimal metal shaving flying) no grinder, except for unfinished building.
dress the end by hand with a "metal file". but there should be no need to clean the end threads or install/remove it multiple times, if it's installed in it's final position from start.
I would love to see pictures of the massive pushmatic panel that was swapped out. Also I sure hope the disconnects were reused and not scrapped. Those disconnects looked well built and still usable. I would have personally kept the disconnects in between the meter and distribution panels instead of replacing them with combination main breaker/distribution panels. Also going from copper feeders to aluminum seems like a downgrade. I would not be very happy about that as a home owner. If I had the same setup as the owner I would have likely just swapped out the rusted out meter base and frayed feeder wires of the single phase service and swapped out the pushmatic panel for a square D QO series panel. Going from 2x 200 amp services with copper feeders where one of them is three phase to a single 400 amp single phase service with aluminum feeders is a downgrade in my opinion.
Everyone criticizing the dude here which means they’re afraid of what they’re doing. I don’t see the problem! You work at your own risk and experience
Great video, keep these projects coming
Good video, in the electrical trade also. Learning from a master sparky. Cheers guys!
If you you start your tape on the wire your cutting before you start it helps !
I learned so much here! Thanks.
Just one note, due to so much electronics, and cable/Phone company bonding has become so critical, taking a chapter from grounding./bonding radio shacks, I bond multiple ground rods with #4 to a ground block that all utilities single point tie at but that is just me, my own house, 4 ground rods and all bond wiring are double clamped all connections. Took a massive lighting strike with one little clamp that failed, cable bond was no longer connected and lighting then went in on cable connection into all the cable modem, cable boxes, then from there the network connection to the network switched and to those connected devices, basically everything fried, so yeah I went overboard but not have to worry as much either now. Nut just a notice, that bonding is critical on everything and needs to all be back to a single point. Love the going over the ground rod bonding part, overlooked too much.
Bro I appreciate your honesty
I would absolutely love to have 3 phase power. One man's trash is another man's treasure I guess
What for? I just bought a commercial building and it's wired for 3 phase. I don't have it energized and don't know what I would use it for.
Hi, appreciate the content. Just what to get some clarity on the first point of disconnect. Are both panels bonded to the natural as i saw you ran 2 separate phases from the meter point to each breaker panel?
Definitions are definitely your strong point.
Hello I just watched you glue the PVC pipe use a bit of Sandpaper to score the PVC before you glue it and it we'll give a better waterproof joint.
You are lucky, my service provider forced me to use rigid conduit. With some odd angles and 4/0-4/0-4/0-2 wire it was a wrestling match.
It looks like they are taking the approach of let's make the riser super strong and hope the wire breaks first.
They also wanted to use 4ga wire for 150A. I complained stating the voltage drop will be too high as it is over 270ft to the transformer. Lucky they used 2/0. Bit more drop than I would like, but way better. I think the logic is due to being outside it can cool better, so they can get away more current than NEC because it has to accommodate insulated spaces.
1:17:07 FYI you got your neutral reversed as to the pairing of the hots. Or to put it more simply keeping left and right separated and going to the same direction makes it easier to inspect if they land all on the same side. It's not a major thing but it's good practice.
You missed that he used too much white tape on the left neutral and too little white tape on the right neutral. The upper neutral was just right, Surprised you missed that.
@@FreeAmerican-mm2my well it would be tidier and neater to have the exact measurement of tape that is not critical as long as it's labeled.
I probably could've pointed it out a little differently I was referring to having the cables coming from the left and the cables coming from the bottom onto the same side of the lugs for a quick identification.
You're probably one of those people would I be right in assuming who would lift up the storm drain cover with a line across it and rotated 90° or put one tile in a pattern out of order?
Sure it doesn't matter if it's on the correct leg but the next guy is gonna open it up and go one out of three they could've all been on the same side.
Was that an insult?
It's those little things that make a neat installation, that shows somebody professional did it and was paying attention to the details. The length of the tape doesn't show that as much and might've been done by an apprentice?
I would say the tape is not under done nor is it over done although it is a large amount of tape, it's also not the whole roll.
i upgraded my house panel from 100 amp service to 200 amp service, put in new meter box, new ground rods, #4 copper ground new 200 amp breaker box with main shut-off used 2/0 copper wire for service entrance. once all done and passed inspection, called power company. bear in mind my electrician advised having power company check incoming wire, he did not think big enough, also check transformer on pole it looked to be in bad shape. Power company came out and stated oh ya incoming wires from pole plenty big enough and as for the transformer, when it fails will replace. he also gave me a name and number to call once passed inspection. after passed inspection and have sticker on meter box, called number giving to me by power company, number not a working number. had to call number on bill, got told would be out within 3 business days. advised was told they would be out same day called for reconnect and giving a number that is no good. she simply repeat would be out in 3 business days. so i said so i was lied to and will be without power for 3 business days. she repeated, would be out in 3 business days and hung up. luckily the electrician reconnected 1 breaker to 1 room and was able to keep bare stuff running till 3 business days.
Well done properly sizing everything. Sorry about the utility. Sadly, not entirely uncommon...
Great videos. Does AES ever meet with the electrical contractor community about suggestions for changes? The utility I worked for has single and three phase overhead and underground 320amp meter bases that can accept up to 2 - 250 or 1 - 500 on the load side and line side. This would eliminate the need for residential or commercial CT services for a 400 amp service. Saw the 320 amp meter base in the AES book but it did not seem to allow parallel conductors on line or load side.
Great video! Uneducated question: aesthetically, was there a reason that both pipes couldn't come from the bottom and make a nice sweeping bend (and stay parallel)?
Yeah I think the end result looks a little janky. I also wonder if there could be any EF problems with the panel feeder right next to the telcom demark box...
I really like the way you teach but I now firmly believe that everyone working live wire should have proper PPE rated for the energy level they are working on. I also must admit that I never did and I never taught my students that. I just cautioned them.
It is amazing what difference in requirements can be from AHJ to AHJ, (authority having jurisdiction), in the country. This would never pass in the western half of the country.
In rural indiana the requirements are non-existent. The standards in Indy are far more stringent than in other areas of indiana. BTW: Did you know that Indiana is still on 2008 NEC??!
I like using one of those flexible vinyl tape measures that can pull through conduit short runs, long runs I use a non stretchable rope mark then measure off the marks actual run through conduit, and then leave some slack just in case, more work but I barley trust myself other wise LoL
WORKMANSHIP!!! Excellent
You talked about Disconnections how there is One most times. My Garage has 2 Disconnection. well One at the Panel on the inside. But, also One on the Outside that Firefighters Use and has a Special Key for. Most Buildings in My Area are Required to Have this Disconnection. Its a Hard Rubber Key Near the Main Meter Box is, The Power goes to this Box First then it goes to The Main Meter Box on the Side of the Building. But, when The Hard Rubber Key is inserted into the Box and turned, it Shuts the Entire Power Off to the building from the outside.
@@ElectricProAcademy Virginia
I learned a 120/240 single phase solidly grounded system is 180 degrees in phase with each other to get 240 volts, not 120 degrees. Just sayin, good job none the less!
Man it's been a couple years since I saw a pushmatic panel. Was at a friend's apartment building. They replaced the whole electrical service for the property. That cost them a pretty penny too.
We used a pump up sprayer to put water on our core bits when water wasn't available
Get some lobster claw cutters so you can hold onto the line wire so when it's spring loaded it doesn't spring into the neutral like it almost did.
Edit.
Wow an actual 400 amp CT.
I was expecting a 320 for sure
Remember, these are not necessarily code violations. They more than likely met code when they were installed. In a couple decades, your work probably won't meet the future code. As soon as you guys mess with it, then it no longer meets code. I always try to make that distinction, myself. Great video. Thanks, Russ from Oregon-27 years in the Trade.
@@ElectricProAcademyAs an european used to 3 phase 415 volt supply i dont get why you removed the 3 phase supply.
@@norwegiannationalist7678 I am in the US, but NOT an electrician, licensed or otherwise.
That said, 3-phase power is generally only used in a commercial environment where the loads require 3-ph power. If 3-ph power IS found in a non-commercial environment, it is generally feeding a large capacity deep-well pump, an irrigation pump, or possibly the homeowner's "hobby" shop out back that contains some larger equipment generally found in a production shop environment. "Single phase" is standard for residential. (We DO use 240V for residential, just not as you are used to. Our "Single phase" is actually 2 phases plus a Neutral...2 hots and a neutral. Between the 2 phases is 240V, either phase to Neutral is the 120V generally used for lighting and consumer small appliances.)
In my local area, the billing includes a "Daily system charge" and an "Energy charge". The former is what it costs to have power available, and the latter is what is charged for the power that you actually use. Residential 1-ph power is $0.63 per day / $.0739 per kWh used. 3-Ph is only available as a commercial rate starting at $.082 per day / $.063 per kWh used. Thus, you could open the breakers on a 3-ph system and it would STILL cost you $25.42 per month just to have the meter installed and power available.
As an aside, our state laws allow a non-licensed homeowner to perform his own electrical work, subject to the exact same permitting and inspection requirements that a licensed electrician/contractor would be required to adhere to. I can legally do any work from replacing a switch or receptacle to completely ripping out and replacing the entire electrical system in MY home...as long as I pull a permit first and have the work inspected at the appropriate times. I've actually done both over the years.
DISCLAIMER: "Not an electrician" is NOT the same as "untrained". My experience is MARINE SHIPBOARD, where Neutrals are isolated and should NOT at any time have continuity to Ground. A voltage reading between any phase and Ground on a ship is a FAULT condition to be isolated, tracked down, and repaired. Stray voltages to the hull of a ship causes electrolysis, which can eventually compromise hull integrity. On the flip side, I've paralleled shipboard generators with each other AND commercial power so many times that it became boring. (Total shipboard plant capacity was 480V, 3-PH, 3.8mW with all 4 Turbine Generators online.)
@@kevincrosby1760 Interesting, I do belivve its wierd that 3 phase isnt more common in residential areas too as it would be benefiticial as thinner wires and lower effieciency losses with 3 phase, Here in Norway i have a medium sized 2 story house quite modern style and good insulation with a 12 kw geothermal heat pump for heating, I have a main breaker of 3 phase 415 volts 40 amps per phase, Now the 3 phase is quite useful for stuff like jacuzzies, heat pumps, Induction cooktops and Electric car charger, All equipment that uses more than 25 amps 240 volts single phase is gonna be run on 3 phase 415 volts, All other equipment runs on 240 volts single phase. I was quite suprised as to how exspensive your electricity is, Price per kwh here at the moment is 0.00019 dollars without tax and fees With taxes and fees included we get a final price of 0.00775 per kwh plus 200$ per year for the meter and the service fuse. Here in northern Norway we have cold winters with temperatures down to -22f And snow up to your chest, So at this new house we are predictet to use 25 000 kwh per year which might sound like alot but considering that for heating and hot water that is not too bad compared to our similar sized old house which we used on average 40 000 kwh per year for heating and hot water plus a wood stove for additional heating i do belive a geothermal heat pump is worth it We are projected to earn it back in 8 ish years. You have 3 parts to you electricity bill here: Electricity price per kwh from the power company, then the transmission tariff which is the most expsensive part being often being 5-10 times more expensive than the electricity price, Then the fees and taxes. Crazy thing with the 0.00019 dollar selling price for electricity per kwh is that alot of small power plants are shutting down becuase the price of making electricty which is around 0.0010 dollars per kwh beats the selling price therefore they would lose money making electricty. the reason the selling price per kwh is so cheap here is becuase we have a surplus of 350% of the electricity we make and use and can export.
@@norwegiannationalist7678 Believe it or not, I'm expecting to see a bunch of replies asking where I live that electricity is so CHEAP. As of 06/06/2022, the average price for electricity in the US is $0.1447 per kWh.
Unfortunately, we have Federal and State governments which are pushing Solar/Wind power and EV cars while ALSO pushing to remove dams (6% of the load) to "save the salmon", get rid of that scary Nuclear Power (19% of the total load), and get rid of coal plants (22% of the load). They are also pushing to reduce carbon emissions from Natural Gas plants (38% of the load).
Nobody seems to be able to explain how to completely do away with 47% of our generating capacity, limit usage of another 38% of our capacity, and INCREASE the load by attempting to phase out gasoline and diesel vehicles in favor of EV...other than to scream "renewable resources" even louder. They seem to have no clue about realities such as Base Generating Capacity. It doesn't really matter how many Solar Farms and Wind Farms you have, a certain base generating capacity is required for those times when the sun isn't shining and/or the wind isn't blowing in your local area.
The stark reality is that you need adequate generating capacity in an area to service the load AT THE TIME OF DEMAND. If that capacity is not present in that area, then it needs to come from somewhere else...which costs money. While NG provides around 38% of our total generating capacity, a good portion of that capacity is designed to service short-term PEAK loads, not long-term BASE loads.
As I said, my experience is all shipboard, where systems are specifically designed so that the total load does not exceed 75% of total generating capacity. Tied to the pier and not going anywhere, we could run on power supplied from the pier, with enough excess to bring up 1 boiler. Once that boiler was up, we could spin up a turbine generator or two to light off the rest of the plant. Once isolated from Shore power, I could easily service the Base Load on 2 TGs and max total load on 3 TGs, leaving 1 in reserve to accommodate maintenance and equipment casualties.
The commercial grid does NOT have that 75% ceiling built in, with the load high enough in some areas that they have to institute "rolling blackouts" to prevent overloading the grid. A "rolling blackout" is when you sequentially isolate areas from the grid so that power is available for the rest of the local areas. Even worse, the exact same area (California) that frequently institutes the Rolling Blackouts is the same area which works the hardest to reduce plant emissions, abolish nuclear power, breach the dams, and is pushing the hardest for everybody to get home from work and plug in their EV. It shows, as the average price of electricity in the State of California is $0.2351 per kWh.
@@kevincrosby1760 Interesting, I do belive the move towards more renewable sources of energy is crucial and can save the world from enviormental damages for 200-300 years, The way to do this is through nuclear power tho, My home country of Norway is an example of how renenwable energy works well once it is devoloped nation wide. Here we get 96% of our energy from hydro power plants and a further 2% from solar and wind and the remaining 2% comes from a mox of garbage incineration power plants and gas power plants. As of now Norway has 2 operating coal power plants and they are both on the tiny artic island of Svalbard, As it is located north of the artic circle and so close to the north pole it it hard for renewable power. In a couple of years it is going to get replaced with a gas turbine power plant. Now an inportant note to these natural gas power plants we have: 75% of the time they are not connected as they are usually located on off shore oil rigs and refineries to generate power, The small ammount of them that are connected is used to burn surplus natural gas and shed load. Now Norway has alot of mountains so hydro power from damming up rivers is a natural choice for cheap and reliable power, of course most countries this isnt possible so the most inportant thing for countries like the US and Germany which has alot of coal power plants is to replace them with nuclear power plants and after that replace the natural gas ones with nuclear aswell, The great thing about nuclear is that it is indepent and responds really quick to demand and it is carbon free exept the waste. Now alot of people are afraid of nuclear when infact it is rated as the most safe way to generate power with the least deaths per TWH of energy. I really belive small nuclear power plants are the future.
There's no dissipating current during a ground fault. The current returns to the source which is the transfer via the grounded conductor (neutral) since ground and neutral are bonded at the first means of disconnect. This in turn results in a very high current draw due to there being very little resistance between the hot and ground conductors which will quickly cause the breaker to trip.
As Mike Holt would say.. It sells lots of ground rods.. But they don't do shit to protect you...
@@WizzRacing Maybe just helpful for the rare lightning strike? lol
@@whattheschmidt Nope.. Lighting hits a pole.. It will seek the source. The source being the Transformer. Why you are required to install Ground Wires back too the service panel..
Why you fuse every light pole. So it one transformer goes out. You don't take them all down. And you know which Pole is the culprit..
@@WizzRacing I said lightning, not lighting.
Suggestion: To more easily measure length of wire needed, such as for the S-curve from drop to meter base, just shove the tape measure "ribbon" THROUGH the conduct.
Im not sure why this video really interested me being that I’m a plumber by trade. I gotta say though you have yourself a good apprentice. I didn’t here you have to tell him much since he already knew what to do for the most part. Great job guys. Can tell you all take pride in your work.
In Rockford il grounding is required in emt and the conduit is required with a bonding connection special emt fitting to a ground clamp
im here because of StudPack, but also because you seem like a great person/electrician.
I seen many commented wondering why a dwelling unit would have 3 phase. Well, since this is obviously an older house probably from the 1950s or older based off the Pushmatic panel, chances are it had a 3 phase central air conditioner at one point. Back in the 1950s and 60s when home air conditioning became more popular during the post war economic boom, some of the 4 and 5 ton condensers on the market at the time were only available in 240V 3 phase, and for this reason, many neighborhoods in the southern states had banks of open high leg delta. In fact there's a street about 10 minutes from me in Greenville SC, with older brick ranches and bungalows, with overhead service and poles with a large pot next to a smaller pot, a sign of an open delta bank.
Another oddity of this service in older buildings, was a delta circuit breaker. This is an oddball in that it was a three pole breaker that connected to the bus bars in a single phase panel, and the high leg conductor typically came in directly from the meter base UNFUSED and connected to a lug on the breaker, this allowed you to have one three phase load in a single phase panel. These have been prohibited since the 1978 NEC, and while you still find them on ebay and other websites selling NOS and used equipment, they are very expensive and I personally wouldn't trust my life to a breaker brought online that's almost 50 years old at best. I know there's many who never seen or even heard of a delta circuit breaker, so I thought it would be worth an honorable mention.
Three phase power was common for houses with central air in the ‘50s and early ‘60s. Condensers required three phase.
3 phase would be a dream for any hobby machinist who acquires that place next.
Dang.. wish we had more good electricians down here.. my house was passed with home and electrical inspection.. with a "main" panel box (really a sub-panel box) wired directly to the meter.. There's no main breaker in it feeding all the smaller circuits.. on an old 50-60's house with the cloth wiring and no ground wires on majority of the original outlets.. I'm glad it doesn't have the knob and tube wiring that my wife house has up in the attic (no fiberglass insulation up there).. thank god..