Need help
store 60' by 80' supplied by 240/120, 3 phase delta. min 2 wire 20 amp branch circuits requiered for lighting.
I got 60x80=4500x3(table 220.12)=14400
14400/2400=6 the answer is 8?
My thoughts are that on a 240 delta only 1 string has the mid tap so that all 120 loads is like 1 phase and the 1.732 should not be used in the calulation. I have put in that number and still cant come up with 8. what I'm I missing?
store 60' by 80' supplied by 240/120, 3 phase delta. min 2 wire 20 amp branch circuits requiered for lighting.
I got 60x80=4500x3(table 220.12)=14400
14400/2400=6 the answer is 8?
My thoughts are that on a 240 delta only 1 string has the mid tap so that all 120 loads is like 1 phase and the 1.732 should not be used in the calulation. I have put in that number and still cant come up with 8. what I'm I missing?