Kind of a simple question but wanted to find out from the pros...I've looked through the 2005 NEC but haven't found the exact answer... I ran RNC (schedule 40 PVC) out through the foundation below grade to a generator about 50' from the house...one 3" conduit and one 1 1/2"...
Is the area within the conduit considered a dry, damp or wet location? Some of the wire I purchased for the controls is THWN but some is THHN.
Secondly, the generator company (Generac, it's a Guardian Series 15000 watt generator) included some cable that goes from the outside jct. box to the inside transfer switch. It's armored cable (AC) that bundles the power transmission wires with the 4 control wires which I assume are low voltage. While they have chosen to do this, does that mean I can do the same for the remainder of the run out to the generator within the conduit? I understand I have to considering de-rating issues regarding the type of wire insulation and conduit size but for starters, can I actually run the control wires in the same conduit as the "power transmission" lines...
Thirdly, I want to run two seperate 20 amp circuits out to a shed adjacent to the generator, so should those wires be in the conduit with the return power from the generator or alone in the 1 1/2" conduit...guess the answer depends on whether the control wires have to be isolated from 120 voltage lines. Also, I'm a bit confused about issues regarding a shared nuetral...is it best to provide dedicated nuetral wires for each of the 20 amp circuits? When is it necessary?
Yes, I know that was a mouthful...thanks for your advice on this...
-John
Is the area within the conduit considered a dry, damp or wet location? Some of the wire I purchased for the controls is THWN but some is THHN.
Secondly, the generator company (Generac, it's a Guardian Series 15000 watt generator) included some cable that goes from the outside jct. box to the inside transfer switch. It's armored cable (AC) that bundles the power transmission wires with the 4 control wires which I assume are low voltage. While they have chosen to do this, does that mean I can do the same for the remainder of the run out to the generator within the conduit? I understand I have to considering de-rating issues regarding the type of wire insulation and conduit size but for starters, can I actually run the control wires in the same conduit as the "power transmission" lines...
Thirdly, I want to run two seperate 20 amp circuits out to a shed adjacent to the generator, so should those wires be in the conduit with the return power from the generator or alone in the 1 1/2" conduit...guess the answer depends on whether the control wires have to be isolated from 120 voltage lines. Also, I'm a bit confused about issues regarding a shared nuetral...is it best to provide dedicated nuetral wires for each of the 20 amp circuits? When is it necessary?
Yes, I know that was a mouthful...thanks for your advice on this...
-John
