AC Connection at Fused Disconnect [RE-wrenches]

[Bill Brooks]

Okay Mark--I'm confused.

I understand that 690.64(B) takes supersedes 240, but what about 690.64
prevents a tap of the feeder if it complies with 1-5? 

You are suggesting a connection on the load side of a subpanel breaker. As
long as the conductor does not have greater than 120% of overcurrent
protection ratings connected to it, there is not a problem.

I think the issue of using the panelboard as a junction box is a far more
likely reason for failing this type of connection--but even that is a tough
interpretation if the box volume is greatly oversized for this specific
application as it sounds like it is.

Finally, we discussed alternatives, and regardless of how good you think
your ideal idea is, you should have 2 or 3 other options waiting in the
wings if you get stonewalled on an issue. Being proven right (dead right)
after wasting 3 days of labor seems like a hollow victory unless you are
going to do this 300 times for the same jurisdiction (which I highly doubt).

Your mamma must have lied to you and told you that the world was fair ;-).

Bill.

> -----Original Message-----
> From: Mark Frye [mailto:markf at berkeleysolar.com]
> Sent: Tuesday, February 06, 2007 9:52 AM
> To: RE-wrenches at topica.com
> Subject: RE: AC Connection at Fused Disconnect [RE-wrenches]
> 
> 
> I have finished my communication with John Wiles on this subject.
> 
> It appears that the basis of allowing the AHJ to dis-allow the load side
> tap
> to a fused disconnect is the argument that Article 240 feeder taps rules
> are
> superceded by the requirements of 690.64 so the basis for the feeder tap
> to
> the disconnect is undermined.
> 
> So no help there, I continue to struggle along with no ability to rely on
> a
> reasonable interpretation of the intent of the Code.  There is no clear
> definition of "point of connection" or "distribution equipment" in the
> Code.
> Without this, the AHJ retains the ability to exercise their responsibility
> to interpret the Code in any manner that serves their own personal
> interests.
> 
> Good Luck Solar America.


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