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Planning Preparations
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GFCI Requirements
A GFCI (ground fault circuit interrupter) is a device that de energizes a
circuit when a current to ground exceeds a specified value that is less than
that required to open the circuit breaker. GFCIs are intended to protect
people from electric shocks and are usually required in wet or damp
locations.
Installation in recreational vehicles requires GFCI protection of certain
branch circuits. Consult all applicable codes.
Tested GFCIs
Compliance with UL standards requires that Xantrex test and recommend
specific GFCIs for use on the output of the inverter. Table 1 lists models
that have been tested and will function properly when connected to the AC
output of the Freedom SW.
Disconnect Devices
Each system requires a method of disconnecting the AC circuits. If the
overcurrent protection device is a circuit breaker, it will also serve as the
disconnect. If fuses are used, separate AC disconnect switches will be
needed between the source and the fuses.
Distribution Panels
Some systems incorporate distribution panels both ahead of the inverter/
charger (the AC source panel) and between the inverter/charger and the
loads (the AC load panel). The AC source panel includes a main circuit
breaker, which serves as overcurrent protection for the panel. Additional
circuit breakers serve individual circuits, one of which serves the inverter/
charger.
AC Wiring
Definition
AC wiring includes input wiring (all the wires and connectors
between the AC source and the inverter/charger input) and output wiring
(all the wires between the inverter/charger and the AC load panels, circuit
breakers, and loads).
Type
The type of wiring required varies according to the electrical codes
or regulations applicable to your installation. For RV applications, this may
be solid wire in multi-conductor cables, but stranded wire is required if
single conductors are used. All wiring must be rated 90 °C or higher.
Table 1
Tested GFCI Models
Manufacturer
Model Number
Hubbell
GFR5252WA
Leviton
8599-GY
Pass & Seymour
1594-W
Freedom SW 3K2K InvChg Install Guide.book Page 13 Wednesday, October 12, 2011 4:40 PM