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∙ 11y ago2 AWG in Aluminium is required.
you Multiply 100 X 100 you Multiply 100 X 100
This is a voltage drop question and a voltage needs to be stated.
AWG # 12 copper on a 20 amp breaker.
Service wire for 100 amps requires AWG #3 copper.
# 4 copper wire short distance.
To calculate the wire size, a system voltage is needed.
Volts * Amps = Watts 12 V * ?Amps = 100 Watts OR ? Amps =100W/12V OR 8.33 Amps = 100W/12V Use a 10Amp fuse inline and you can get by with 16Ga wire.
The V stands for volts and A is amps. If for example you have a 12kVA device and are running off a voltage of 120 volts then Amps = 12000/120 = 100. You then use the calculated amps in a wire size table to get the correct size.
A #3 copper wire with an insulation factor 90 degree C is rated at 105 amps.
you would use #2 aluminum urd wire for a 100 amp service
A #3 copper wire with an insulation rating of 75 or 90 degrees C is rated at 100 and 110 amps consecutively.