Conduit routing (off the roof) and sizing.

[Naptown]

Are the WEEB-DMC clips not compatible with clamps that hold the modules 0.25" apart?

Sorry I was talking weebs for the inverters and you were talking mid clamps.

[megalo]

Are the WEEB-DMC clips not compatible with clamps that hold the modules 0.25" apart?

[Naptown]

Why do you have to use those clips?

Without them he would need to run the #6 bond wire to each inverter and bond individually. Can be done and some jurisdictions require it to be done that way

[megalo]

Why do you have to use those clamps?

[t5800512]

Hey guys, thank you for all of your help. This is a great forum and I'm happy to be a member.

I now have two sets of rails up. It has been difficult because of the heat here in the Dallas area. I go up on the roof, and in about 20 minutes I'm dripping wet, and not from rain. So I have been getting up before sunrise and working on it in the early morning hours. Even then it is too hot. I'm now ready to mount the enphase inverters, but I'm still waiting on the WEEB-DMC's clips to ground the micro inverters. I hope they will me here Monday.

I had planned for those two rail sets to hold 17 of my LG 280 watt PV panels. However, it appears that the Unirac design tool screwed me up. It used .25 inches between the panels for the design. But the clips it selected and I purchased will hold the panels one inch apart. Believe it or not, that extra 6 inches is enough to run me over my space and cut me one panel short on each row. Nuts! So only 15 panels for part one of the installation. I have 27 PV panels total. I'm still not certain where I'm going to put the other panels. There really is no good place for them. I have been thinking about mounting them on the other side of the roof ridge, and then stand them at about 45 degrees. I know that is a no-no. But I'm not sure I understand why. I believe I should open a new thread for that discussion.

[SunEagle]

I just went and got my white spool of wire. It says it is THHN or THWN or Gasoline or Oil resistant. There is a lot more information on it. But it says it is THWN, so maybe I'm okay.

It sounds like the wire should be ok for outside installations.

[Naptown]

I just went and got my white spool of wire. It says it is THHN or THWN or Gasoline or Oil resistant. There is a lot more information on it. But it says it is THWN, so maybe I'm okay.

Good to go it looks like

[t5800512]

I just went and got my white spool of wire. It says it is THHN or THWN or Gasoline or Oil resistant. There is a lot more information on it. But it says it is THWN, so maybe I'm okay.

[SunEagle]

Hey SunEagle, welcome to the discussion.

I will be using compression strain relieve fittings to bring the enphase trunk cable into the aluminum wiring junction box. The junction box has a sealing cover, and connects water tight to the PVC conduit raceway. I think it will stay dry. I can even use some silicon on the fittings.

But if it won't pass the inspection, all that does not matter.

It depends on the inspector on if you pass or not.

Regardless of how water tight your conduit system is now, water will find a way to get in which is why the Electric Code requires you to use the wet (THWN) rated insulation.

[Naptown]

THHN type insulation is really for dry type or indoor work. THWN is what is required for outside or possible wet locations.

How is your wire "sealed" in the conduit?

Check with the wire manufacturer THWN is almost impossible to find in smaller gauges Although THHN is many times dual rated for THHN2.

[SunEagle]

Dang and all I have is KY and that would make it a wet location.

Well that and the yellow stuff will work. I think.

[Naptown]

Better use some of that blue wire pulling gel to slip them through.

Dang and all I have is KY and that would make it a wet location.

[t5800512]

Hey SunEagle, welcome to the discussion.

I will be using compression strain relieve fittings to bring the enphase trunk cable into the aluminum wiring junction box. The junction box has a sealing cover, and connects water tight to the PVC conduit raceway. I think it will stay dry. I can even use some silicon on the fittings.

But if it won't pass the inspection, all that does not matter.

[SunEagle]

Oh no. I have already purchased my wiring, which is THHN. If the wire is in a sealed PVC conduit, does it matter?

THHN type insulation is really for dry type or indoor work. THWN is what is required for outside or possible wet locations.

How is your wire "sealed" in the conduit?

[t5800512]

Oh no. I have already purchased my wiring, which is THHN. If the wire is in a sealed PVC conduit, does it matter?