P=VI
here P=8000 Watts
v=220 V
I=8000/220
= 37 A
so you should use 37A Breaker
Minimally 30 AMPS
The formula you are looking for is I = W/E.
60
15, but I wonder if your information is correct. The breaker size doesn't seem to be right and a 240v circuit in a house uses a 2 pole breaker.
Assuming being fed by c32 breaker for start load minimum cable size SWA is 70mm which will go to 456 meters
Answer for USA, Canada and countries running a 60 Hertz supply service.One 240 volt receptacle fed from a two pole breaker from the distribution panel. The size of the breaker is determined by the load current and the wire sized accordingly.
When installing a circuit breaker, you size the breaker based on the wire size. The breaker should be matched to the ampacity of the wire to ensure proper protection against overloads and short circuits. The device being controlled by the breaker is not a determining factor in sizing the breaker.
Add up your amps to calculate your breaker size. Add up your loads (amps), divide by 0.8, and choose that size breaker. If that number does not correspond to a standard size breaker you go to the next higher standard size breaker.
usually around 400sq. ft room give or take
#8. It is better to error on the next large size. # 8 THHN 90 degree wire is rated at 45 amps. If there is a possibility that the breaker is connected to a 50 amp load the wire will be undersized. A #6 wire is rated at 65 amps. For continuous use, a load factor of 80% has to be applied. 65 x .8 = 52 amps. The only time the conductor can be smaller than the breaker size is on a motor feeder. Then the breaker is sized at 250% of the nameplate full load amps (FLA) rating of the motor. This is to allow the motor's starting current, which is about 300% FLA, to not trip the breaker on start up.
Depends on the wire size you are using. If the generator breaker is a 30 amp then install a 30 amp breaker.
Normally AWG #10 wire on a 30 amp breaker but it really depends on the size of the pump. The pump manufacture will specify the size wire and size breaker needed.