Post Main Point of Connection [RE-wrenches]

[Marco Mangelsdorf]

William,

I've dealt with the same situation.  I made a plea to the head of
engineering at the electric utility co. to allow me to use this huge 4'x4'
enclosure they had for their kWh meter CTs to make the line-side splices,
but noooooooo.  What I learned is that some main service breakers have
double or even triple barrel lugs which allow us PV folks to simple bring
our conductors to the line side of the disco and safely make the connection.
Or, if that hardware configuration is not there, you can look into getting a
replacement main service breaker assembly that does have a double barrel
configuration.

Marco
ProVision
Hawai'i


Colleagues:

We are installing a 30 KW system in California.  Being a commercial 
property, we are not allowed the 20% bus over rating allowed on a 
residence.  Therefore, we must connect prior to the service disconnecting 
means as allowed in NEC 690.64(A).

The utility (PG&E) is allowing this but has disallowed us from connecting 
in the same cabinet as the metering current transformers.  The next cabinet 
downstream is the service disconnect.  The switch has arc chutes in this 
section of the cabinet occupy the entire cabinet, not giving us room to 
attach to the bus bars.

Has anyone else experienced this scenario?  IF so, how have you dealt with
it?

Thanks,

William Miller


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