DIY Solar Array Wiring: Transition Solar PV Wire to THHN conduit wire

[@jeffmaling9577]

I really appreciate all the hard work you put into these videos, Johnny. I’m doing my own DIY installation, and many of your videos have been super helpful to build confidence and do a professional job. Just today I looked up your clips video and found my local electrical supply has all three of the clips you suggested. I’m also using a mast head cable entry which I picked up from you and Engineer775. The cable pulling video was also very helpful and my family and I had some fun pulling our own wires in. Keep up the great work!

[@GainSolarPower]

That’s great Jeff. What type of system are you installing.

[@ericmyers1306]

I'm putting an MC4 PV disconnect on my array rack, then feeding that into a DIN rail terminal block in a blank junction.

[@JuanGonzales-or6pu]

Jajaja, got confused himself with the Isolator Wires..!

[@dubhaltaghohearcain2431]

Do you always place two location IMO disconnect at the panel and outside the house. Do place your DC breakers inside the house.

[@unionse7en]

Good video... do you run an EGC (Not GEC) conductor back to "Home" with the PV wires?

[@GainSolarPower]

I do.

[@supermo26]

Any down side to running pv wire all the way to the inverter / mpp charger all in one unit? My run is less then 100 feet.

[@GainSolarPower]

Hard to pull. More expensive.

[@GainSolarPower]

But we’ve done it a few times

[@offgridwanabe]

Maybe we need some more singing with 2 inch Johnny

[@GainSolarPower]

I’ll try. I hurt my back. Trying to drum up that DIY business.

[@MM-rr1zf]

@@GainSolarPower oh no! Hope you’re feeling better asap!

[@GainSolarPower]

@@MM-rr1zf it doesn’t hurt unless I work or drive far

[@bagginshates]

Im holding one of those DC isolators in my lap and i cant turn the dial. ( I did check that the center dial post fit into the switch). Any idea why it wont turn?

[@GainSolarPower]

Maybe cover is not aligned.

[@larrylesher5319]

What is the largest THHN wire the IMO will take? Will 8 gage wire work?

[@GainSolarPower]

I don’t know the largest size off the top of my head but I routinely wire in #8 and it fits. I’d say it will definitely fit a #6 as well

[@larrylesher5319]

@@GainSolarPower Thank you and keep up the videos they have given me the knowledge and confidence to install my solar DIY. Thanks again much appreciated!

[@GainSolarPower]

Larry have you purchased your inverter batteries solar materials yet?

[@lancefaure3945]

Per NEC wires in underground outdoor condit are in a wet location (see definition of dry, damp, and wet locations). THHN wire is NOT rated for use in wet (but OK for dry, damp) locations. It must be THWN. And you are an electrician?

[@GainSolarPower]

Yea I am. Pardon my electrical speak. It’s cross listed wire you stickler. I don’t think I’ve ever even seen straight THHN it all says THHN/THWN-2 MTW blah blah.

[@lancefaure3945]

Yeah you did say it was cross listed THWN. But you kept saying THHN. Just making sure your viewers who read the comments know the difference.