Angel Electric
Member
- Location
- OBX, NC.
9-10 KW 240v ranges in a home economics classroom, fed from a 120/ 208v feeder.
What is the calculated load for the ranges on this feeder? Looking for amps?
The answer provided is 88 Amps. Referencing Table 220.56.
I took the total of all 9 ranges kw at 10 kw, added them together and got 90000.
Then factored in the derating per Table 220.56 = 90000 VA X .65 = 58500 VA
Then I take 58,600 VA. and reduce to amperage by Dividing 58500/208 X1.732 (360)= 162.5 Amps
What am I missing ... As always, any assist would be appreciated.
What is the calculated load for the ranges on this feeder? Looking for amps?
The answer provided is 88 Amps. Referencing Table 220.56.
I took the total of all 9 ranges kw at 10 kw, added them together and got 90000.
Then factored in the derating per Table 220.56 = 90000 VA X .65 = 58500 VA
Then I take 58,600 VA. and reduce to amperage by Dividing 58500/208 X1.732 (360)= 162.5 Amps
What am I missing ... As always, any assist would be appreciated.