Carl:
You are correct. I had the exact argument with an inspector. Here is what
I did to make a convincing argument: I opened the disconnect and then
reached in and touched the load side contacts (inverter side) with my
fingers. I turned to the inspector and said, "Now it's your turn to touch
the line side." Case closed.
William Miller
At 05:17 PM 1/13/2010, you wrote:
Wrenches,
I just had an AHJ require me to switch the load and line connections
on the fused AC disconnect which sits between the inverters (AC
Combiner panel) and the point of utility connection. The inverter
was connected on the LOAD side of the fused disconnect, and while the
AHJ agreed this was the safest configuration, (when the disco is OFF
the fuses are safe to remove) he insisted that the PV array should be
connected to the LINE side of the disconnect since it is supplying
power rather than acting as a LOAD. Any similar experience or
arguments I can make based on the NEC which might help change the
position of the AHJ next time round? I still believe our initial
installation represents the safest configuration.
Carl Adams
SunRock Solar, LLC
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