I have an 2.5kW net-metered roof-mounted PV system whose inverter died and was replaced with a 5kW 3x mpp one. I plan to add two pole mounted 6-panel arrays using Panasonic 335W modules, 492V 2010W max per array. I plan to bury conduits, they will be above grade on the poles ~6ft up to the arrays and ~3ft up the side of the house where it goes thru the rim joist to the basement.
I'd appreciate advice on the choice of conduit. Five #10 wires (2 DC pairs + ground) to the house. 1-1/2" diameter was suggested for ease of pull. Is Sch 40 allowed for the above ground sections, if it's got to be Sch 80, can it be combined with Sch 40 for just the underground parts? Are the NEC rules for DC different than AC? Is 18" burial depth allowed for this?
Thanks for any advice on this!
I'd appreciate advice on the choice of conduit. Five #10 wires (2 DC pairs + ground) to the house. 1-1/2" diameter was suggested for ease of pull. Is Sch 40 allowed for the above ground sections, if it's got to be Sch 80, can it be combined with Sch 40 for just the underground parts? Are the NEC rules for DC different than AC? Is 18" burial depth allowed for this?
Thanks for any advice on this!
Comment