Adding MX60 to Power Panel [RE-wrenches]

[Jeffery Wolfe, Global Resource Options]

Kurt,

I've struggled with the "which side to connect to" issue. Xantrex does
connect to the inverter side, and I've stuck with this for my work,
unless I bring the PV straight through a fuse to the battery. Reason is
that otherwise the wire to the C40 (or PV breaker) is completely
unprotected. Thinking in line with the NEC tap requirements, we can tap
off of a larger service, protected at a higher amp level, within limits.
I believe the idea is that a large fault will still trip the larger
overcurrent device, and short distances make small faults less likely.
So I've considered the C40 connection on the inverter side to be a tap.
If connected to the battery side I don't know how it meets code. (Not
saying it does not, I just don't know how it does.)

Jeff

-----Original Message-----
From: Kurt Nelson [mailto:sunwise at cheqnet.net] 
Sent: Sunday, March 14, 2004 10:50 PM
To: RE-wrenches at topica.com
Subject: RE: Adding MX60 to Power Panel [RE-wrenches]



-----Original Message-----
From: Jeffery Wolfe, Global Resource Options 

When the power panel comes from the factory with a C40 installed, the
positive on the C40 is wired with a ring terminal onto the bolt that
holds the lug onto the 250A breaker (on the side toward the inverter).

I have always landed the PV on the battery side of the breaker, not the
inverter side.  

Kurt Nelson
 

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