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Physical Installation | Electrical
Installation | Potentiometer
Chart
Electrical Installation
NULITEs will work with any dimming
circuit, be it positive or negative. Each unit draws a maximum
of 125 ma. with an average load of around 80 ma. NULITEs are
installed in parallel circuit (see Figure 1). Eight NULITEs
will draw a maximum of one total amp. In planning for the
installation, a good rule of thumb is that for every post
light removed, one NULITE can be installed for the same current
draw, without any modification to the aircraft’s lighting
circuit.
In the event that no dimming circuit is
available, we suggest a 3 amp fuse or circuit breaker be used
with a potentiometer as seen in Figure 1. (See our chart for
the right size pot.)
NULITEs are voltage specific, and come
in 5-, 14-, and 28-volt models. To ensure that the proper
model is being installed for the correct aircraft dimming
voltage, the following wire Color Code has been assigned:
- 5 Volt: Blue/White
- 14 Volt: Green/White
- 28 Volt: Red/White
Special attention should be paid to wire
routing to ensure that aircraft safety is maintained. These
wires can be pulled out if enough force is applied so strain
relief is very important. NULITEs come with 18” leads that,
when tied together properly form a self-supporting harness.
Up to eight NULITEs can be chained together
using only the leads attached to the light. For more than
eight, a 20 ga. jumper be installed as a power supply lead.
All white wires should be taken to ground and colored wires
tied into the dimmable bus.
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