To determine the appropriate circuit breaker size for a 9.4 kW three-phase machine, you can use the formula: Breaker Size (Amps) = Power (Watts) / (Voltage × √3). Assuming a standard voltage of 400V, the calculation would be approximately 13.5 Amps. It's advisable to select a breaker rated higher than this calculated value, typically rounding up to the nearest standard size, such as a 16A or 20A breaker, to account for inrush currents and ensure safety. Always consult local electrical codes and a qualified electrician for specific requirements.
From the nameplate on the welder you find the amperage that the welder draws at the three phase voltage that you are going to use. This amperage is used to size the phase converter. This amperage is also used to size the breaker that will feed the phase converter and wire size for the installation.
I=270000/380/1.732 I=410A USE: 500A CIRCUIT BREAKER
The first thing you have to do is find the full load amps of the motor. The wire size feeding the motor has to be 125% of the full load current. The breaker is usually 250% of the full load current. If the voltage and amperage had been added to the question the exact breaker size could have been calculated.
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.
if you have 200 kva so it's 160 KW then ,you need 400 A MCCB and setting at 0.9 and use cable 4c.185 mm2 if the SMDB is nearby and all this will be change according to the ambient temperature and the electrical code used in your area
The appropriate breaker size for a washing machine is typically 15 to 20 amps. It is important to consult the manufacturer's specifications to ensure the correct breaker size for your specific washing machine model.
50amp but if considering the breaker cannot withstand starting current you need to size the breaker up.
No, you should not install a 30 amp circuit breaker to a machine which normally requires a 20 amp supply. The circuit breaker is protecting the wire to the machine. That wire is likely only rated for 20 amps, (# 12 awg). Therefore, a 30 amp breaker could allow too much current to go through the wiring to the machine and cause the wire to burn down. Replace the 3 phase 20 amp breaker with the same amperage breaker.
The job of a breaker is to limit the amount of current that is applied to the size of wire that is connected to the breaker.
10amp
From the nameplate on the welder you find the amperage that the welder draws at the three phase voltage that you are going to use. This amperage is used to size the phase converter. This amperage is also used to size the breaker that will feed the phase converter and wire size for the installation.
208 volts is not a common single phase voltage but you could just size your breaker to the capabilities of the conductor. 208 is normally a phase to phase voltage <<>> Many 230 volt motors can be connected to lower voltage supplies. These motors can be connected to supplies of 208 and 200 volts. The code requirement is that the 230 volt full load amperage of the motor be increased by 10% and 15% respectively for wire sizing and breaker selection. To answer the question you will need a two pole 15 amp breaker.
I=270000/380/1.732 I=410A USE: 500A CIRCUIT BREAKER
500 amp breaker with 250 mcm cu conductors, NEC list this motor as drawing 192 amps X 250% = 480amps go to the next standard size of breaker which would be a 500.
In North America this size breaker could be used on a welding machine. A range in the home would use a 40 amp two pole breaker.
A 60 horsepower motor typically requires a minimum breaker size of 100 Amps for normal operation. It is important to consult the motor's specifications or a licensed electrician to ensure the correct breaker size for safe and efficient operation.
AWG #3 copper.