Foralternating currents, the 18 kW amp transformation is different for a single phase and a 3 phase system; the power factor is needed in both cases. In case of the three-phase electrical generation, line to line voltage and line to neutral voltage require different constants to convert 18 kilowatts to amps, (√ 3 ) and 3, respectively. Powerand Phase. There are two different ways to look at phases. First, it's when voltages are out of phase from each other, such as with 3 phase power, and second, when voltage is out of phase from current. If you connect two sources, they must be synchronized in order to be an efficient power source. If you have two different electrical Nomatter what voltage you use; the rated current (amps); or whether you have 1-phase power or 3-phase power; etc you can always compare watts. If you absolutely must think using amps (i.e., 3-phase power [i.e. most of EU, many other countries, and many of Raritan's largest customers in North America]—then this information does not . #5. charlie b said: Three phase calculation: 24 amps times 230 volts times 1.732 (the square root of 3) equals 9560 watts. Single phase calculation: 9560 watts divided by 240 volts equals 39.8 amps. I don't have a code book handy, so I'll leave the wire and breaker sizes to you. Ifyou had 480W 1A stadium lights on 480V delta 20A breakers each lamp is single delta phase and AB , AC or BC then one might choose to derate the breaker to 80% then, 20 x .8 = 16 amps per line. 16 / 1.732 = 9.2 amps per phase. 9 fixtures per phase x 3 = 27 fixtures. The margin allows surge power start. d5OZ5VE.

how many amps in 3 phase power