10
2 INSTALLATION
2.5 Wiring
The heavy gauge wires on the BCDC1225D and BCDC1240D unit carry peak
currents of up to 35 and 50 Amps respectively, and it is important to make a good,
low resistance, electrical connection that will not degrade over time. Failure to
make a good, reliable contact may result in breakdown of the wire insulation and
cause a short circuit, or worst case a fi re. We recommend that this activity be
undertaken by an appropriately trained person.
REDARC recommends using a soldered butt splice crimp connection that is
covered with heatshrink. See Figure 2.5.1. REDARC does not recommend using
standard red/blue/yellow blade connections as they are not rated for either the
current required or gauge of wire supplied on the unit.
Crimping provides good mechanical connection, soldering provides a long lasting
electrical connection and forming of the heatshrink will prevent any shorting/
contact with your vehicle chassis.
Crimp here.
Crimp both wires to the butt splice using
indent type crimpers.
Solder Both Ends Here.
Solder the wires to the butt splice.
Ensure that a good connection is
made. Keep heatshrink away until after
soldering is complete and has cooled.
Figure 2.5.1 - Ensuring a good wiring connection
2.6 Fusing
REDARC recommend using MIDI style bolt down fuses as
they ensure a low resistance connection. The REDARC
FK40 and FK60 fuse kits are recommended.
Blade type fuses are not recommended as they can result
in a high resistance connection which causes excess heat
and may damage the fuse holder and/or the wiring.
Self-resetting circuit breakers are not recommended as
they may trip prematurely due to the heat generated by
the current fl owing through the wires.
A single fuse and holder
setup from the Fuse Kits
available from REDARC.
Part number FK40 (40A)
or FK60 (60A).
