Recent content by Pilot Bob

Use something like this to cover and protect the wiring.

There is what appears to be a contradiction in the 2017/2020 code between 690.31 (A) and 690.31 (G) (2017) or 690.31(D) (2020). Paragraph A says all wiring methods included in this code shall be permitted. Than A says were PV source and output circuits operating at voltages greater than 30...

My SPD is for both +/-. Thanks.

I believe the neutral which is on the secondary side of a transformer is connected to ground at the pole or ground transformer, so it is grounded before becoming your service drop.

No. The coil on the primary side of the transformer has no neutral. Only the secondary side has a neutral (which is grounded) The service drop to a residence has two hots (ungrounded conductors) and a neutral. Since it is grounded the NEC refers to the neutral as a (grounded conductor. The main...

How does a SPD pull voltage to ground when the wiring from the CB continues to the inverter? Thanks…

Understood. Whether you have a pole mounted transformer or a ground transformer the neutral coming from that transformer is connected to ground at the transformer. This is the first point of grounding before it ever comes to your meter and service panel.

WTH, it’s grounded at the transformer before coming to your house (utility side). This is why it’s called a grounded conductor.

The Neutral coming from the Grid is called the grounded conductor in the NEC (it is grounded from the transformer to a grounding electrode) and is the main part of the grounding system for the main service panel. This is the reason that neutrals and grounds are bonded in the main panel.

No, that is not correct. No, not correct. 690.47A1 states the PV output circuit EGC is the only connection for ground required for the PV System. 690.47B allows you to add a ground Mike Holt clearly says in his video that 690.47A1 is the only requirement for grounding. The AC output EGC is the...

No, that is not correct. No, not completely correct. 690.47A1 states the PV output circuit EGC is the only connection for ground required for the PV System. 690.47B allows you to add a ground electrode for the array. I believe all systems need to be grounded, just not a fan of the array ground...

1. I don’t disagree with this but when you install a ground electrode at your array you are complying with this. 2. The Neutral coming in from the grid is grounded at the substation, and every pole with a transformer and every guide wire to a pole. This is what I meant when I said you get a...

That is not correct as I read the 2020NEC. Starting at 690.41 it talks about grounding. No where does it say the array must be grounded back to the panel.