thru the wall with 10 ga solar wire

[e67]

I have 2 arrays now on 10 ga each and they have to go thru the wall from the outside shop area. I was rigging them today. The arrays will carry 10 amps 300vdc each.
It seems that they shouldn't be right next to each other, touching with that much power but I don't know......so I was thinking I should have a 1 inch pvc thru the wall and also along the inside wall for about 15 ft...they would touch each other inside that pipe but thats pretty big conduit....what do you think??

 

[Q-Dog]

High voltage DC inside a structure should be in metal conduit.

 

[SparkyJJO]

It doesn't matter if the wires touch - thats what insulation is for. But it does need to be in metal conduit as noted.

 

[Bkord]

High voltage DC inside a structure should be in metal conduit.

I don’t have the code book with me. How is structure or building defined?

 

[e67]

thats funny because metal is a conductor and plastic isn't..

 

[ScropusGobbleBottom]

thats funny because metal is a conductor and plastic isn't..

Even more funny when the metal conduit is grounded "for protection" on a completely irrelevant circuit that will not trip any breaker besides an AFCI I think.

 

[Brucey]

thats funny because metal is a conductor and plastic isn't..

Its so if there's an internal short the metal conduit will contain it while a PVC pipe may melt and then a fire.

 

[seneysolar]

I have 2 arrays now on 10 ga each and they have to go thru the wall from the outside shop area. I was rigging them today. The arrays will carry 10 amps 300vdc each.
It seems that they shouldn't be right next to each other, touching with that much power but I don't know......so I was thinking I should have a 1 inch pvc thru the wall and also along the inside wall for about 15 ft...they would touch each other inside that pipe but thats pretty big conduit....what do you think??

Your PV wire should be rated for 600 volts as direct bury, then 1000v or higher in conduit. Youre good, but need metal conduit if you want to be NEC compliant.