Simplex 4100U Installation Manual Page 56

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SIMPLEX Fault Assistance Guide RevA
29 April 2009
Strobe Relay Driver Module and Strobe Light Connection
5.4.2 Cable Gauging
It is inadvisable to use a wire gauge appreciably heavier than the gauges in the table(below) –
there may be problems with high inrush currents (which are required to charge the large
electrolytic capacitors in some strobe lights) which can weld the relay contacts. It is also
recommended that you don't use cables shorter than 100m, or if you do then add resistor(s) to
make enough total resistance to give about a 10% voltage drop at the intended load current.
It is recommended that cables are no longer than 1000m.
NOTE: The above paragraph does not apply if all strobes connected to a cable pair are
Multi-Candela strobes – as they do not suffer from the inrush current problem.
Table 1: Cable Gauges
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