Dick:
Just to follow up, below is the reply I received from the inspector when I
asked for clarification. I had asked for clarification because I admit
ignorance to this section and I wanted to formulate a good response on the
first attempt:
There must be a main disconnect for panel C in the pump house. A main
circuit breaker in panel C would satisfy this requirement. If the panel
does not have a main circuit breaker (MLO) a maximum of six branch circuits
are allowed per NEC 225.33.
I prefer to approach these requirements with generic solutions. The
broader a solution, the more likely it will apply to other projects. Also,
a generic solution can box you in to a certain design. I did not know the
number of circuit breakers and did not want to drive out to the job to find
out. Instead I put this note on the plans:
4. Panel C shall have 6 or fewer circuit breakers or implement Documented
Safe Switching Procedures per 225.32 Exception 1.
This proved to be acceptable and a permit was issued a few days ago. I
have since found out that there are 5 existing breakers. One is in the off
position and may be a spare. We will be installing two inverters, bringing
the number of breakers to 7. If I can remove one breaker, I achieve
compliance that way. If I can not remove a breaker, I write up a procedure,
post it and I'm good.
Thanks for your input.
William Miller
At 06:33 PM 12/11/2009, you wrote:
William,
No, I mean what is your problem with complying with the request, "Show the
number of existing circuits and/or the
disconnecting means for panel C". Why not just do that?
Dick
--- You wrote:
Dick:
I too am mystifed. I sent a request for clarification but have not
heard back. It may be some kind of power trip as we have been at odds
over many issues. I will report back.
William Miller
Millersolar.com
On Dec 11, 2009, at 6:05 PM, [email protected] (Richard L
Ratico) wrote:
> William,
>
> No direct specific experience with this, but, respectfully, what is
> the problem?
> The code sections seem clear and not unreasonable nor arduous.
>
> Dick Ratico
> Solarwind Electric
>
>
> --- You wrote:
> Friends:
>
>
> I just received a plan correction for a grid-tie permit application
> wherein
> the inspector is questioning compliance with section 225. Below is
> the
> text of the correction notice:
>
> The existing panel C in the pump house must comply with NEC 225.31. 225.32
> & 225.33. Show the number of existing circuits and/or the
> disconnecting
> means for panel C.
>
> Has anyone ever had experience with this section being applied to a
> grid-tie system? The inverters will be inside a pump house remote
> from the
> main residence.
>
> Thanks in advance.
>
> William Miller
>
--- end of quote ---
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