GEC at Fused disconnect for a Photovoltaic System

[johnny.lang0726]

Would a GEC at the fused disconnect be required for a photovoltaic system if we are bonded at the fused disconnect? This would be for a supply side tap the fused disconnect would be our overcurrent protection device. And if it is required to have a separate GEC at the fused disconnect what code is it referencing?


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[brycenesbitt]

his would be for a supply side tap the fused disconnect would be our overcurrent protection device. And if it is required to have a separate GEC at the fused disconnect what code is it referencing?

This might be related https://forums.mikeholt.com/threads...-two-structures-on-the-same-property.2580457/

 

[jaggedben]

If you are on the 2020 code see 250.25. And 250.64(D). The answer is probably yes, you need a GEC or a GEC tap, unless the neutral is ground at or upstream of the supply side tap.

But see also recent discussion here:

Interconnected power production pv disconnect neutral size bonding

When getting into pv solar systems, apparently the service grounded conductor neutral is jumped from either the grounded conductor buss at the service panel or the neutral lug at the main meter to bond the pv system disconnect? How do you size this grounded jumper conductor terminating and...

forums.mikeholt.com

As I said in thread, IMO the PV disconnect should be treated as an additional service disconnect. But your mileage with your AHJ may vary.

 

[johnny.lang0726]

If you are on the 2020 code see 250.25. And 250.64(D). The answer is probably yes, you need a GEC or a GEC tap, unless the neutral is ground at or upstream of the supply side tap.

But see also recent discussion here:

Interconnected power production pv disconnect neutral size bonding

When getting into pv solar systems, apparently the service grounded conductor neutral is jumped from either the grounded conductor buss at the service panel or the neutral lug at the main meter to bond the pv system disconnect? How do you size this grounded jumper conductor terminating and...

forums.mikeholt.com

As I said in thread, IMO the PV disconnect should be treated as an additional service disconnect. But your mileage with your AHJ may vary.

Thank you! This was very helpful.


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