How is the FLA of single phase components calculated when the service is 3 phase? For example with a 480V/3PH service, loads being a 3kW electric heater @ 480V/3PH, and a 1KVA transformer @ 480V/1PH.
Would the total panel FLA be:
( 3000 / (480 * 1.73) ) + ( 1000 / (480 * 1.73) ) = 4.8?
- or -
( 3000 / (480 * 1.73) ) + ( 1000 / 480 ) = 5.7?
Would the total panel FLA be:
( 3000 / (480 * 1.73) ) + ( 1000 / (480 * 1.73) ) = 4.8?
- or -
( 3000 / (480 * 1.73) ) + ( 1000 / 480 ) = 5.7?