EW 5k hybrid grounding

[Johnsondavid10]

I’m in the middle of wiring up a loads panel for my solar system. My solar system is AC tied to pass loads to when batteries and solar have failed. My question is how to properly ground my solar loads panel. I understand ground and neutral needs to be isolated so I’m assuming I need to add another ground bar in the panel. Which bar do I isolate from the metal box and how?

 

[timselectric]

I’m in the middle of wiring up a loads panel for my solar system. My solar system is AC tied to pass loads to when batteries and solar have failed. My question is how to properly ground my solar loads panel. I understand ground and neutral needs to be isolated so I’m assuming I need to add another ground bar in the panel. Which bar do I isolate from the metal box and how?

The (existing) neutral bar is already isolated, as long as you don't bond it.
You will have to add a ground bar to the enclosure.
That ground bar will be fed by the EGC from the inverter. And the inverter ground bar is fed by the EGC from the main service panel.

 

[DC_Ripple]

The AC Output of the Inverter feeds your Load Panel.
Line / Neutral /Gnd

Loads Panel should have 3 bars. depending on the size, you may have to purchase a ground bar if it is not included.
Line or Hot [Black wire goes here]
Neutral [White wires go here]
Ground [bare wires go here]

Your Main panel should have a connection from Neutral Bar to Gnd Bar.
You should NOT have a Neutral Ground Bond in your Loads Panel

If your Loads Panel came with a Green Screw, do NOT install it. That would make a Neutral Ground bond on the Loads panel.

see attached picture to get an idea on how it looks:

 

[DC_Ripple]

this is a 7 terminal Square D brand ground bar. other sizes available.

Amazon.com: Square D - PK7GTACP 7 Terminal Ground Bar Kit : Industrial & Scientific

Amazon.com: Square D - PK7GTACP 7 Terminal Ground Bar Kit : Industrial & Scientific

www.amazon.com

 

[Johnsondavid10]

Okay that diagram is a great example. I’ll use this as a reference. Thanks

 

[timselectric]

see attached picture to get an idea on how it looks:

Where did you get that drawing?
It needs corrections.

 

[DC_Ripple]

on the web,
searched wire installation of subpanel 120v

 

[timselectric]

on the web,
searched wire installation of subpanel 120v

I'm not surprised.
It wasn't made by anyone with electrical experience.
You can't trust the internet for anything. lol

 

[DC_Ripple]

any chance you can point out the defects?
Maybe help out the rest of us willing to learn.

EDIT:
This picture shows up on a lot of sites. must have been copied and re-posted all over.

 

[timselectric]

any chance you can point out the defects?

L1 and L2 are backwards.
There's a note in red that says a neutral isn't needed unless there are 120v loads, but the sub panel is only 120v. So all loads have to be 120v.
The ground bars should be be further to the left. (That's a neutral bar location)
And the neutral bar connector is labeled as the bond.
All of these things will confuse anyone who doesn't already know what they are looking at.

This picture shows up on a lot of sites. must have been copied and re-posted all over.

That's the problem with the internet. Whether it's right or wrong, everything stays.