Installation

MAXIMUM LENGTH FOR CABLE RUNS
The system may be "star wired" from a central point or "loop wired" however the number of
stations on a loop wired run governs the overall length of the run.
The table below shows the relationship between the length of a cable run and the number
of stations permitted on the run.
A cable run is considered to begin at the station to which the power supply is connected.
Number of stations for a given cable run length
Cable run length No. of stations permitted
51 to100 metres 1 station
34 to 50 metres 2 stations
26 to 33 metres 3 stations
1 to 25 metres 4 stations
These maximum distances can be doubled where required by running a “figure 8” cable
(14 x 0.2 mm) in parallel with the POS & NEG wires.
It is vitally important that the POS and NEG wires are balanced in terms of the type of wire
and the number of wires used - i.e. if a Fig 8 wire and a Valet wire are used for POS, a Fig
8 wire and a Valet wire should also be used for NEG.
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