National Electrical Installation Standards

Standards as High as Your Own

 
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Monday, July 18, 2022

Question:

Hello,

If I have a 240 volt PV solar disconnect line tapped as the first means of disconnect main panel. Do I need to run a neutral and bond the neutral if the system does not require any neural?

Thomas Hernandez

A

Answer:

Hi Thomas,

Based on the installation described, there is a requirement for supply-side bonding at the PV solar disconnect. This can be accomplished using the grounded conductor installed to that disconnect, or it can be accomplished using a supply-side bonding jumper meeting the requirements in Section 250.102(C). The PV disconnect is not typically viewed as a service disconnect in this scenario, but because the connection is made to the line side of the service disconnect, supply-side bonding is necessary. 

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