MNE250XW E-Panel Manual

XW E-Panel installation manual
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two DC-GFP devices that fit the E-Panel. One is a 63 amp single circuit din rail mount device while
the other is an 80 amp single circuit panel mount device. OutBack Power offers a two circuit 80
amp panel mount DC-GFP that also fits inside the E-Panel. The Xantrex DC-GFP’s will not fit in
the E-Panel. The MidNite Solar single circuit DC-GFP’s are designed for a single PV array. Two
MidNite DC-GFP’s may be used to accommodate two arrays although the dual OutBack would for
dual arrays and dual controllers cost less and take up less room. DC-GFP’s are a very
misunderstood device. When looking at a wiring diagram you will notice that part of the DC-GFP is
a high current breaker. Connected in series with the GFP is yet another high current DC breaker. It
is a common mistake to think the second breaker is unnecessary. NEC2008 requires a DC-GFP on
all systems whether mounted on the roof top of a residence or not. The NEC also does not allow the
DC-GFP to be the PV disconnect. When the DC-GFP is turned off, it leaves the battery negative
ungrounded. The only time it is allowed that the system be ungrounded is during a fault condition.
This requirement necessitates a PV disconnect in series with the DC-GFP.
80 amp panel mount DC-GFP ready
for the high current wires.
63 amp din rail DC-GFP wired with a 63 amp
PV disconnect and a 63 amp controller output
breaker.