i was reading in abook and many points i did not understand appreciate if somebody could help
1- when choosing larger motor should not we choose the motor with the larger amperege not the larger va because in that book a walk in cooler with 20 A 208 volt 3 phase was chosen over vent lhood with a 6850 va 208 volt single phase (32 A)
2-could we have 3 phase load 277 volt and if it was for lighting doe not need a neutral
3-what does it mean a 100 A fuse with 10000 A interupting rating
4-what size thwn conductor required for 279 A load parrallel in 3 sets do we choose from column 60 c (279 divided by 3 is 93 less than 100 A)
1- when choosing larger motor should not we choose the motor with the larger amperege not the larger va because in that book a walk in cooler with 20 A 208 volt 3 phase was chosen over vent lhood with a 6850 va 208 volt single phase (32 A)
2-could we have 3 phase load 277 volt and if it was for lighting doe not need a neutral
3-what does it mean a 100 A fuse with 10000 A interupting rating
4-what size thwn conductor required for 279 A load parrallel in 3 sets do we choose from column 60 c (279 divided by 3 is 93 less than 100 A)