A sauna heating element is a resistive load. The equation that you are looking for is Amps = Watts/Volts = 8000/220 = 36 amps.
A #8 copper conductor with an insulation rating of 90 degrees C is rated at 55 amps. This will be fed with 40 amp two pole breaker.
a 220 volt, 3200 watt oven will draw under 15 amps, so yes a 2o amp breaker will work.
120 volts.
The smallest size breaker is a 15 amp and with a #14 wire which has a capacity for 15 amps and a 120 volt source, this combination will give you the capacity up to 1800 watts. W = A x V, 120 x 15 = 1800.
about 4800 watt but should not use it 100% so to be safe 4000 watt (80%)
50 watt equals less than 1/2 amp current flow at 120 volts so you can have 30 light on a 15amp breaker or 40 on a twenty amp breaker.
15 amp
a 220 volt, 3200 watt oven will draw under 15 amps, so yes a 2o amp breaker will work.
20 amp
50W@12V is 4.2 amps, so any breaker rated that or higher should work.
20 amp is perfect, 15 is fine
20 amp breaker 12 gauge wire assuming its 120 volt
An 8000 watt generator at regular house current 110v will supply 72 amps.
15,000 watts at 240 volts will use 62.5 amps. Therefore you will need to use AWG #3 wire on a 100 amp breaker.
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.
A watt is the product of amperage times voltage.
Ampire. watt/volt