Must I use "PV" wire for runs inside attic space?

inowhavesolar said:

I need to run wire from panels on roof, about 60ft, through attic space, to unfinished garage to inverter. There's an "attic tunnel" which connects main house to detached garage. Do I have to use #10 "PV wire" through the attic or can I transition in the roof box to standard #10 THHN wire?

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Brucey said:

to be contained in metal conduit

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inowhavesolar said:

Sure, but can it be THHN wire inside that conduit or must it be "PV wire"?

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inowhavesolar said:

Sure, but can it be THHN wire inside that conduit or must it be "PV wire"?

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Brucey said:

Yes, assuming it's rated for the PV voltage.

inowhavesolar said:

Sure, but can it be THHN wire inside that conduit or must it be "PV wire"?

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Brucey said:

I believe NEC code requires DC inside a dwelling to be contained in metal conduit or equivalent.

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DPC said:

What is the equivalent?

Can you use Teck or BX? armoured cables?

Just some light reading that talks about Mechanical protection and wiring methods/
I am not personal familiar with the current rules...

https://esasafe.com/assets/files/esasafe/pdf/Electrical_Safety_Products/Bulletins/64-4-4.pdf

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DPC said:

What is the equivalent?

Can you use Teck or BX? armoured cables?

Just some light reading that talks about Mechanical protection and wiring methods/
I am not personal familiar with the current rules...

https://esasafe.com/assets/files/esasafe/pdf/Electrical_Safety_Products/Bulletins/64-4-4.pdf

Click to expand...

Brucey said:

Looks like Canada is much stricter requiring the PV cables to be secured from risk of physical damage, and a lot about rodent proofing.

View attachment 210978

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