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vidaliaman
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# Posted: 1 Oct 2015 11:22
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i have a 12v battery that i use to clip a work light onto, i have a DC 12v 5w led light in it and it works great. if i wire with 14/2 wire 8 light recepticals for a distance of 100ft of wire(pole building) what type and size of battery bank would i need to light all 8 lights at full brightness to work for a length of time of one hour? and if possible the calculations to come up with the answer
thanks dave
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creeky
Member
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# Posted: 1 Oct 2015 13:33
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5w x 8 = 40w.
12v at 40 w = 3 amps
3 amp line loss over 100 ft. with 14g. = not much.
50w at 12v = 4 amps per hour.
take the amp hr capacity of your battery. divide by 3 (depth of discharge). take that number and divide by 4 (amps consumed per hour). the result is your nominal hours of lights with all lights on full.
any more questions. i'm here all week folks. 
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vidaliaman
Member
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# Posted: 1 Oct 2015 14:55
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Nice!!! Will get working
Thanks dave
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