Stupid question or stupid inspector?

ggunn · 2024-10-15T18:49:25-0400

A friend of mine called me the other day to tell me that an inspector failed a commercial PV system project because he made a supply side interconnection in a gutter. What??? I have been retired for a while now, but I designed many systems interconnected to service conductors in gutters; did something change in the 2023 NEC that would make such a connection noncompliant?

tortuga · 2024-10-15T19:01:40-0400

As long as 230.7 is met I am not sure what the issue would be, I always politely ask inspectors for a code reference, your friend should ask for one.

ggunn · 2024-10-15T19:06:02-0400

tortuga said:
As long as 230.7 is met I am not sure what the issue would be, I always politely ask inspectors for a code reference, your friend should ask for one.

That's what I thought, and you answered my question. Thanks.

jaggedben · 2024-10-16T01:40:52-0400

ggunn said:
...did something change in the 2023 NEC that would make such a connection noncompliant?

No.
(Not per se, anyway. Maybe it's actually something else? Like 230.46? Or not sizing the gutter adequately.)

Stupid question or stupid inspector?

ggunn

PE (Electrical), NABCEP certified

tortuga

Code Historian

ggunn

PE (Electrical), NABCEP certified

jaggedben

Senior Member