8800w/240v = 36.6 Amps Since at some point (Thanksgiving, etc) you may use this range for more than 3 hours straight, your wire size must be calculated at 125 percent of that number: 36.6A * 1.25 = 45.75 (rounded to 46) Amps Using the NEC table 310.16, 75 degree column, the smallest copper wire that can carry 46 amps is #8 AWG. If you use aluminum the smallest is #6 AWG.
Technically it's a 20 amp load (20A x 240V = 4800W). However, you should not run a breaker at full load. The breaker is to protect the wiring from overheating and from short circuits. You should use 10 gauge wire and a 30 amp double pole breaker.
Amps X Volts = Watts
Amps X 220 = 4,000
Amps = 18.181818181818...
You CAN get by with 12 AWG, and a 20 amp circuit, but that's really pushing it. Nothing else could be on the circuit and you'd be getting real close to the edge. The breaker would no doubt run warm and you'd probably get quite a number of "false trips".
It isn't that much more expense to use a 10 AWG wire and a 30 amp circuit, and it will save you a LOT of trouble in the future.
First thing that has to be done is find the amperage as that is how the wire size is chosen. The formula you would use id I = W/E, Amps = Watts/Volts. 4500/220 = 20 amps.
A #10 copper conductor with an insulation factor of 75 or 90 degrees C are both rated at 30 amps. The heater conductor has to be de rated to 80% capacity so 30 x .8 = 24 amps. Your load amperage is only 20 amps so this conductor will be the right size.
This heater probably runs on 240 volts, draws 20 amps, would require minimum 12 gauge wire, or 10 Ga wire depending on the length of the wire
AWG # 10 with ground. Must be powered by a 30 amp breaker.
10 ga
If you are using typical residential voltages ( 120v/240v) a 40 amp breaker is plenty big enough. You could even use a twenty amp breaker.
15 amp
Mine has a 25 watt 120 volt bulb in it.
No, a watt is a watt, the voltage only changes the wire size. The power company bills you based on kilowatt hours. 1hp = 746 watts, no matter what the voltage.
20 amp is perfect, 15 is fine
If you are using typical residential voltages ( 120v/240v) a 40 amp breaker is plenty big enough. You could even use a twenty amp breaker.
15 amp
Mine has a 25 watt 120 volt bulb in it.
20 amp
No, a watt is a watt, the voltage only changes the wire size. The power company bills you based on kilowatt hours. 1hp = 746 watts, no matter what the voltage.
20 amp is perfect, 15 is fine
Electricity is not sold by the volt. It is sold by the watt, a unit of power. One watt equals one volt-ampere.
If it is an 18 watt 12 volt bulb, then yes. But an 18 watt 120 volt bulb - then no.
AWG # 10 wire on 30 amp circuit.
assuming this is a 12 volt system....45 amps.
A watt is the product of amperage times voltage.
Ampire. watt/volt