rocket-electric
Member
Are utility company transformer's output calculated differently?
I have the following setup:
A pad mount liquid filled transformer 150KVA 13,800v primary, 208/120v 3 phase secondary
Doing the math on the secondary voltage, I get 150,000 / (208 x 1.73) = 417 amps
The service required for building #1 is 800A 208/120v 3 phase
The second setup is:
A pad mount liquid filled transformer 1000KVA 13,800v primary, 480/277v 3 phase secondary
Doing the math on the secondary voltage, I get 1,000,000 / (480 x 1.73) = 1200 amps
The service required for building #2 is 2000A 480/277v 3 phase
Please advise, Thanks
I have the following setup:
A pad mount liquid filled transformer 150KVA 13,800v primary, 208/120v 3 phase secondary
Doing the math on the secondary voltage, I get 150,000 / (208 x 1.73) = 417 amps
The service required for building #1 is 800A 208/120v 3 phase
The second setup is:
A pad mount liquid filled transformer 1000KVA 13,800v primary, 480/277v 3 phase secondary
Doing the math on the secondary voltage, I get 1,000,000 / (480 x 1.73) = 1200 amps
The service required for building #2 is 2000A 480/277v 3 phase
Please advise, Thanks