5 - Electrical Installation
For safety purposes, only competent personnel should perform the electrical installation. All
equipment should be installed to current Electrical Regulations and Standards.
In order to obtain the maximum light output from the searchlight, it is essential that the full
operating voltage of the lamp fitted be applied to the lampholder contacts.
Method of Electrical Connection
1)
Disconnect the supply before working on the electrical system;
2)
The searchlight must be connected to a fused electrical supply, using suitably sized cable;
3)
If the searchlight is located a considerable distance from the supply, provision must be made in
the cable size in order to overcome the voltage drop. The following table should be used for
indication purposes only:
Searchlight
24v 150w
24v 250w
115v 1000w
230v 1000w
230v 650w
Cable Size (mm²) Distance Max Distance Max Distance Max Distance Max Distance Max
1.5
5 MTRS
3 MTRS
17 MTRS
68 MTRS
105 MTRS
2.5
8 MTRS
5 MTRS
28 MTRS
111 MTRS
171 MTRS
4
13 MTRS
8 MTRS
44 MTRS
176 MTRS
271 MTRS
6
20 MTRS
12 MTRS
69 MTRS
275 MTRS
422 MTRS
10
34 MTRS
20 MTRS
115 MTRS
460 MTRS
707 MTRS
4)
Whenever possible cable terminations should be made below deck and with approved terminal
devices;
5)
If a spare auxiliary fuse or circuit breaker is not available, one of the correct type and rating
should be fitted and connected to a positive supply. It is advisable to locate a bus bar or main
connection and avoid any direct connection to the supply;