if the cutter is 220 vac @ 40 amps you only consume 8800 watts, but at 50 amps you'll need 11000 watts. your gen is rated for only 9000 watts... that's why it's killing the gen at more than 40.91 amps. don't take my word for it--just do the math (volts x amps = watts) hope this info helps.
I had problems running a 50 amp plasma torch off a 12kW Lima MAC generator, 208 volt 3 phase, only because the governor was not adjusted correctly. Frequency dropped to under 50 Hz. Did the same thing. Yes, only using 4 of the 6 windings which is 8.5 kW. When I adjusted the governor, frequency stayed right at 60 Hz and plasma cut perfectly, even 3/8" stainless. Your generator uses an automatic voltage regulator, these sometimes don't like inverter loads and harmonic distortion can interfere with voltage regulators. My Lima MAC has no AVR but the voltage output is RPM dependent so when loaded, RPM dropped along with voltage (208 down to 160) so plasma arc extinguished. With the governor adjusted, plasma runs great even when the 3 phase compressor kicks on.
I have a Predator 9000/7250 and my PRIMEWELD Cut60 (60 amp) arrives tomorrow. I will be sure to post my results as well. My air compressor uses 13amps and I plan on using that on the generator simultaneously. Should be interesting.
I just got a Cut60 and a Duromax generator with running watts of 12000 peak watts and 9500 running. Also thinking of running compressor at same time. Can you let me know what the results were? Thanks!
Sorry i had to cringe when i saw you try to run the plasma at 50 amp output. I'm no expert but have researched quite a bit on genny requirements for a 50amp plasma. I purchased a Thermal Dynamics Cutmaster 58 its a 60 amp output. You need to go by the input amps not output in calculating genny size. My Cm 58 pulls 45 amps at rated output. A 11k running watt genny puts out 45 running amps so in order to have a bit of leeway a 12k running watt is ideal. Your cut 50 probably needs a genny thats 9k or 10k running watts. I dont know but have heard that running a plasma underpowered will give low voltage, low duty cycle, and potentially damage either machine. Hope this helps a bit.🙂
Thank you for your expertise and input. I have found it does cut much better on lower amperage, and you explained why! I really do appreciate comments like yours
By my calculations, if my generator running wattage is 7250 and I divide by the input voltage of 220, I get 32. Does that mean I can use the welder and plasma at 32 Amps and less?
Do you know how I can calculate how hot I can run a stick welder off of it? Mig? Because I can run 3/32 e7018 at 95 amps no problem, but if I go up to 1/8 rod, the machine shuts off even at the same amperage. I know a larger diameter rod equals more current. Also, my arc gap is remaining very tight. Next I’m wondering about Mig. I can run the welder at around 17.5 volts and 210 wire speed no problem. Increasing my voltage past 18 shuts the machine off. If I could have a formula for each process on how to calculate my max possible settings, it would mean the world to me!
I use a 9000 watt peak, 7250 watt running generator with a 240 outlet and have no problem MiG, TiG and Arc welding at 150+ amps, so I’m wondering how this is giving you problems. Are you running the air compressor on the generator as well? What’s its AMP draw?
The issue is not the generator. The primeweld draws 45 amps at 240 volts. That is 10,800 watts. He is killing his generator with these massive voltage drops. It doesnt matter how much your welder generates in Amps, if the draw exceeds your source capability, it wont hold and die. He needs at least 12,000 watt generator.
Well I used to think the same thing, until I understood how transformers and inverters work. Remember that 50 amps on the plasma cutter is output. A transformer/ inverter can step up or step down power. That's how I can run the same arc welder at 170 amps on this same champion generator thats rated for 30 amps output. Check out my other video on this, you can search for it by searching "PrimeWeld on champion generator". I use my Lincoln MP210 240v arc welder on this same generator welding at 120 and 130 amps.
So if you check the specifications on the CT520D, the rated input amps for the plasma cutter is up to 31 input to give 50 amps output. And also keep in mind generator output will vary dependent on altitude, we live at 7,500 ft, so we're not getting a full 30 amps, or a full 7,000 Watts. If you live closer to sea level, it will perform better.
My 200 amp welder is rated for full output drawing 20 amps at 240. It barely loads my 12kW 3 phase 208 volt generator, less than 12 amps per phase. Handy as a 12 gauge extension cord for 3 phase is lighter than an 8 gauge single phase cord.
if the cutter is 220 vac @ 40 amps you only consume 8800 watts, but at 50 amps you'll need 11000 watts. your gen is rated for only 9000 watts... that's why it's killing the gen at more than 40.91 amps. don't take my word for it--just do the math (volts x amps = watts) hope this info helps.
9000 surge watts
7000 running watts
Wow, I thought that size generator would have handled 50 amps but I'd stay in the 40 amp for good measure. Enjoyed a full watch. Thumbs up.
Thanks for sharing your experience, it saved me a lot of hassles trying to find out on my own.
Yep I was afraid of that haha... thanks for saving me the hassle...
I had problems running a 50 amp plasma torch off a 12kW Lima MAC generator, 208 volt 3 phase, only because the governor was not adjusted correctly. Frequency dropped to under 50 Hz. Did the same thing.
Yes, only using 4 of the 6 windings which is 8.5 kW.
When I adjusted the governor, frequency stayed right at 60 Hz and plasma cut perfectly, even 3/8" stainless.
Your generator uses an automatic voltage regulator, these sometimes don't like inverter loads and harmonic distortion can interfere with voltage regulators.
My Lima MAC has no AVR but the voltage output is RPM dependent so when loaded, RPM dropped along with voltage (208 down to 160) so plasma arc extinguished.
With the governor adjusted, plasma runs great even when the 3 phase compressor kicks on.
I have a Predator 9000/7250 and my PRIMEWELD Cut60 (60 amp) arrives tomorrow. I will be sure to post my results as well. My air compressor uses 13amps and I plan on using that on the generator simultaneously. Should be interesting.
How did it go? Thinking of using a 12k watt generator for my cut60 based on the math.
I just got a Cut60 and a Duromax generator with running watts of 12000 peak watts and 9500 running. Also thinking of running compressor at same time. Can you let me know what the results were? Thanks!
Sorry i had to cringe when i saw you try to run the plasma at 50 amp output. I'm no expert but have researched quite a bit on genny requirements for a 50amp plasma. I purchased a Thermal Dynamics Cutmaster 58 its a 60 amp output. You need to go by the input amps not output in calculating genny size. My Cm 58 pulls 45 amps at rated output. A 11k running watt genny puts out 45 running amps so in order to have a bit of leeway a 12k running watt is ideal. Your cut 50 probably needs a genny thats 9k or 10k running watts. I dont know but have heard that running a plasma underpowered will give low voltage, low duty cycle, and potentially damage either machine. Hope this helps a bit.🙂
Thank you for your expertise and input. I have found it does cut much better on lower amperage, and you explained why! I really do appreciate comments like yours
@@anesthesiadreamin 🙂
Good thing it has a 3 year warranty. I’ll exchange it when that happens.
By my calculations, if my generator running wattage is 7250 and I divide by the input voltage of 220, I get 32. Does that mean I can use the welder and plasma at 32 Amps and less?
Do you know how I can calculate how hot I can run a stick welder off of it? Mig? Because I can run 3/32 e7018 at 95 amps no problem, but if I go up to 1/8 rod, the machine shuts off even at the same amperage. I know a larger diameter rod equals more current. Also, my arc gap is remaining very tight. Next I’m wondering about Mig. I can run the welder at around 17.5 volts and 210 wire speed no problem. Increasing my voltage past 18 shuts the machine off. If I could have a formula for each process on how to calculate my max possible settings, it would mean the world to me!
I use a 9000 watt peak, 7250 watt running generator with a 240 outlet and have no problem MiG, TiG and Arc welding at 150+ amps, so I’m wondering how this is giving you problems. Are you running the air compressor on the generator as well? What’s its AMP draw?
No, compressor running on shore power. And I *still* dont own an amp meter 🙃 I know!!! But I am interested to hear about your results for sure
The issue is not the generator. The primeweld draws 45 amps at 240 volts. That is 10,800 watts. He is killing his generator with these massive voltage drops. It doesnt matter how much your welder generates in Amps, if the draw exceeds your source capability, it wont hold and die. He needs at least 12,000 watt generator.
Thanks for sharing
Something definitely needs adjusting on the generator. I can run my Everlast plasma cutter off of a generator quite easily. Good luck.
30 amp generator won’t run 50 amp cutter lol that doesn’t even add up lol
Well I used to think the same thing, until I understood how transformers and inverters work. Remember that 50 amps on the plasma cutter is output. A transformer/ inverter can step up or step down power. That's how I can run the same arc welder at 170 amps on this same champion generator thats rated for 30 amps output. Check out my other video on this, you can search for it by searching "PrimeWeld on champion generator". I use my Lincoln MP210 240v arc welder on this same generator welding at 120 and 130 amps.
So if you check the specifications on the CT520D, the rated input amps for the plasma cutter is up to 31 input to give 50 amps output. And also keep in mind generator output will vary dependent on altitude, we live at 7,500 ft, so we're not getting a full 30 amps, or a full 7,000 Watts. If you live closer to sea level, it will perform better.
My 200 amp welder is rated for full output drawing 20 amps at 240. It barely loads my 12kW 3 phase 208 volt generator, less than 12 amps per phase.
Handy as a 12 gauge extension cord for 3 phase is lighter than an 8 gauge single phase cord.