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This guide for use by qualified installers only
AC Output: The circuit breaker or fuse must be rated at no more than
the rating of the input breaker in the installation and must be
approved for use on 120 Vac branch circuits. The wire used between
the Freedom HF and the AC output breaker must be of adequate size
to match the AC input circuit breaker’s rating. The wiring from each
AC output breaker to each of the loads must be adequately sized to
carry the current rating of the individual AC output breaker.
Disconnect Devices: Each system requires a method of
disconnecting the AC circuits. If the over-current protection devices
are circuit breakers, they will also serve as the disconnects. If fuses
are used, separate AC disconnect switches will be needed ahead of
the fuses. These will have to be a branch circuit rated for 120 Vac and
have an appropriate current rating.
AC Distribution
Panels
Most systems incorporate distribution centers both ahead of the Freedom
HF (the AC source panel) and between the Freedom HF and the loads (the
AC load panel). An AC source panel includes a main circuit breaker,
which serves as over-current protection and as a disconnect for the AC
shore power supply line. Additional circuit breakers serve individual
circuits, one of which serves the Freedom HF. The AC load panel can
incorporate an AC output circuit breaker and breakers for individual load
circuits.
AC Cabling AC cabling includes all the wires and connectors between the AC source
and the Freedom HF, as well as all cabling between the Freedom HF and
the AC output panels, circuit breakers, and loads. The type and size of the
wiring varies with the installation and load. For example, in high
vibration environments, such as marine or RV applications, wire nuts may
not be acceptable, so crimp splices would be required. In other
applications, flexible multiple-strand wire may be required. Installation
codes usually specify solid or stranded, overall size of the conductors, and
type and temperature rating of the insulation around the wire.
CAUTION: Equipment damage
Do not connect the output of the Freedom HF to what is known as a “multi-wire
branch circuit”. These are four-wire circuits consisting of a ground, neutral, and
two lines that are 180 degrees out of phase with each other (from a standard 120/
240V “split phase” circuit). These circuits are commonly used in kitchens to
power “split receptacles” where the top and bottom halves of a duplex receptacle
are connected to different lines.
FreedomHF_IC_01-Installation.fm Page 8 Monday, December 24, 2007 9:47 AM