Ac Wiring; Ac And Dc Wiring Separation; Ac Wire Connections; Figure 4, Ac Terminal Block - Trace Engineering LEGEND II Manual

The National Electrical Code (NEC) defines the standards for AC installation wiring in vehicle
applications, but there are still many installation variables; most are determined by the level of
automatic switching desired and the amount of external AC power to be switched. A qualified
electrician should do the installation.

AC and DC Wiring Separation

Do not mix AC and DC wiring in the same conduit. A separate conduit should be used for each.
Induced current in the DC conductors could cause confusion with the inverter's microprocessor.
Where DC wiring must cross AC or vice-versa, make the wires at the crossing point 90 to one
another. Consult code for details of DC and AC wiring in vicinity to one another.

AC Wire Connections

The AC and DC terminals are located on the front panel of the chassis. A six-station terminal block is
provided to make the AC connections. The terminal block is used to hardwire the AC input and AC
output. All terminals are labeled on the inverter. Consult your local code for proper wire sizes,
connectors, conduit, etc. Table 2, " Current Carrying Ability of Wire in Free Air" gives suggestions for
wire sizing. Code requires that an external disconnect switch be used in the AC input wiring circuit.
The AC breakers in a sub panel will meet this requirement.
NOT USED
NOT USED
AC OUT HOT
AC IN HOT
AC IN NEUTRAL
AC OUT NEUTRAL

Figure 4, AC Terminal Block

When installing an inverter in a vehicle, do not use solid wires such as Romex because of the
potential for shortened wire life due to vibration-induced breakage. Stranded copper wire is required.
As a plus, stranded wire is generally much more flexible and thus easier to work with.
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