Making plans for the wiring under my ground mount to the panels. The 10ga THWN-2 wires come up into a box under the panels, and from there plan to go with 10ga PV wire up thru some PVC Sch 40 conduit with T's and elbows to reach the PV wire/MC4's on the panels. The question I have is how to do this, ideally without dangling wires that require covering.
In past installations I just brought the PV wire out of a conduit connector (with protective ring) facing down, made a drip loop and plugged the MC4 connectors together. But this was in the day of lower voltages. I could do that now, but it would require me to enclose that wire loop due to the string voltages being higher and distance off the ground. I was thinking that if I could face the T's and connectors UP and make a waterproof seal, I could keep the exposed wire runs very short (like 2-3") and encase them mostly in the PV rails. I just didn't know if there is a code acceptable, waterproof seal for the top of a conduit connector, or some other waterproof exit device. And I am open to other ways of running these final connections to the panels.
Just looking for solutions which will pass an inspection, and minimize the need to encase the wiring. How do other folks handle this?
In past installations I just brought the PV wire out of a conduit connector (with protective ring) facing down, made a drip loop and plugged the MC4 connectors together. But this was in the day of lower voltages. I could do that now, but it would require me to enclose that wire loop due to the string voltages being higher and distance off the ground. I was thinking that if I could face the T's and connectors UP and make a waterproof seal, I could keep the exposed wire runs very short (like 2-3") and encase them mostly in the PV rails. I just didn't know if there is a code acceptable, waterproof seal for the top of a conduit connector, or some other waterproof exit device. And I am open to other ways of running these final connections to the panels.
Just looking for solutions which will pass an inspection, and minimize the need to encase the wiring. How do other folks handle this?
