Understanding NEC 2017 and 2020 Changes and Applications to PV Systems [Recorded Webinar]

Staying up to date with code changes can be challenging and confusing. Learn about the latest NEC 2017 and upcoming NEC 2020 requirements and how to apply them to your PV projects. Get a sneak-peek into Ryan Mayfield’s full-day NEC course taught during the NABCEP CE conference. Designed specifically for experienced PV professionals, this webinar will cover the major code requirements affecting PV installations, focusing on NEC Articles 690 and key 705 updates.
Learning Objectives:
• Identify NEC 2017 & 2020 code changes
• Understand new code requirements as they pertain to PV systems
• Apply NEC code to PV projects
Mayfield Renewables: www.mayfield.energy
Learn more about NEC 2017 and 2020 for solar+storage: www.heatspring.com/courses/ne...
**This webinar was hosted and recorded by Mayfield Renewables in partnership with NABCEP on July 28, 2020.

[@Gerling2day]

Jump to 11:00 to skip the introductions.

[@shofarsogood7504]

Thanks

[@uptopsolar]

At 26:00 mentions generating capacity in the NEC 690 definitions, opened up my NEC 2020 book and it’s not there?
Update: It got moved to Article 100 in NEC 2020. Must be used in wind or another section as well.

[@uptopsolar]

At 53:00 having the disconnect just after the inverter will still have the inverter components energized from the PV power circuit to the inverter? It seems that it can very well be electrically the same. As long as they simultaneously disconnect all conductors that aren’t solidly grounded (this would need to be verified depending on the unit) , rating, location, markings and numbers are good and is indeed electrically the same, it could be fine.

[@atomicdmt8763]

I caught that also............ his explaination wasnt addressing any (crux of the problem/concern). AH, theory!

[@topshelf1055]

Anyone have a link to the Sandia calculations for 100kW generating capacity systems?

[@atomicdmt8763]

yes, curious to know!

[@uptopsolar]

Thanks 🙏🏼 this is great! 👍

[@AyushKumar-sr9ss]

hy we design permit packages for usa
for residential and commercial projects so can we work for you .

[@MayfieldRenewables]

You're so welcome!

[@MartyHuie]

I know this is two years old but I've got a question NEC 2017, off grid system no grid tied at all. Totally off grid is a PV disconnect required on the outside of the building or can it be the main breaker? North Carolina residential

[@MayfieldRenewables]

Hi Marty, we agree with that interpretation of NEC 2017 - no PV disconnect should be required outside the building for residential off-grid systems.

[@bestillandknowthatuaregod]

Do you need 3 To 1 Y Type MC4 Branch Solar connector if using a combiner box? THANKS, I have 6 panels...

[@MayfieldRenewables]

No, individual strings would be "combined" in the combiner box.