single core cable run in metal trunking 60metres from supply to first of 12 140w flourecent lights, lights fitted end to end over a distance of approx 20 mtrs
2007-10-17 02:15:14 · 3 answers · asked by frosty 1 in Science & Mathematics ➔ Engineering
If the setup is over 25 years old, it is probabaly 12 gauge. If this is a newer installation it is probably 10 gauge.
I would have to know a lot more about the situation to tell you what type of insulation is used.
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2007-10-17 05:50:17 · answer #1 · answered by tlbs101 7 · 0⤊ 0⤋
So 12 X 140 Watt lamps amounts to a total of 1680 Watt.
Now we don't know whether you have 110V or 220V or 240V supply.....? Because it is the current in Ampere that defines the cable size (I believe you mean copper and not insulation).
So for...........you need
110V............AWG10 or thicker
220V............ 2.0mm dia. (AWG12)
240V.............1.8mm dia.
2007-10-17 09:15:21 · answer #2 · answered by Marianna 6 · 0⤊ 0⤋
better use a 2.5 mm2 cable....voltage drop should be taken consideration and the possibility of expanding your lighting requirements.
2007-10-18 05:35:11 · answer #3 · answered by Neo 2 · 0⤊ 0⤋