Interactive system grounding

[dm9289]

I took a few courses on solar but Im still a little confused. Does anyone know of some clear pictures of PV grounding bonding for utility interactive systems?

I understand from the roof to the inverter but after the inverter where the disconnect switch is I always am confused about bonding the neutral or not in that disconnect.

I was hoping someone had pics for both line and load side taps dealing with the neutral.

Thanks in advance

 

[jaggedben]

Stop worrying about it. Run an EGC to the equipment like you would with any other circuit and call it a day. That advice should hold unless you're on an outdated code (pre-2017) or using outdated equipment.

NEVER bond an AC neutral in two places. If you're just dealing with the exisiting service then the neutral should already be bonded.

 

[mtnelect]

This might help.

 

[dm9289]

Stop worrying about it. Run an EGC to the equipment like you would with any other circuit and call it a day. That advice should hold unless you're on an outdated code (pre-2017) or using outdated equipment.

NEVER bond an AC neutral in two places. If you're just dealing with the exisiting service then the neutral should already be bonded.

Here is a picture from the Soares grounding book 2020 I just going they think different ugh

 

[dm9289]

Good file for load side

 

[dm9289]

Here is a picture from the Soares grounding book 2020 I just going they think different ugh

 

[jaggedben]

Ok that file is too low resolution but I think they are showing a supply-side connection.

I oversimplified. If you are dealing with multiple service disconnects, you bond the neutral at each service disconnect, where you create the EGC. This was a little unclear in the NEC before the 2020 version but it's now pretty clear.

But still, in other words, for most up-to-date equipment...
Treat it like any other circuit.