Adding MX60 to Power Panel [RE-wrenches]

[Jay Peltz, Peltz Power]

Hi Jeff,

There is another issue not been brought up.  And that is high voltage damage
potential to the inverter if the main is tripped but the PV isn't shut off
first.  With the PV connected to the inverter side,  its still hot, and
could either be still on, or could damage ( I've seen it) the inverter from
high voltage from the PV.

I always install two breakers, one from the main as the DC shut off and then
the PV input breaker.

Jay

Peltz Power
----- Original Message ----- 
From: "Jeffery Wolfe, Global Resource Options"
<jeff at globalresourceoptions.com>
To: <RE-wrenches at topica.com>
Sent: Sunday, March 14, 2004 8:58 PM
Subject: RE: Adding MX60 to Power Panel [RE-wrenches]


> 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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