KP2
Senior Member
- Location
- New Milford, CT
What is thae branch circuit conductor size for a 5 HP, 3 phase, 208 volt motor with a nameplate amperage of 15.3 amps and service factor of 1.15?
I come up with this:
Full Load Current is 16.7 amps
16.7 X 125% = 20.875
Because of the footnote *240.4(D) I feel that a # 12 is no good and I must use a # 10.
I thought that because it is for a motor like mentioned in 240.4(G) the small conductor rule does not apply, but I cant find anything in 430 to support this hunch and feel that a # 10 must be used.
Help if you can
Thanks
Kevin
I come up with this:
Full Load Current is 16.7 amps
16.7 X 125% = 20.875
Because of the footnote *240.4(D) I feel that a # 12 is no good and I must use a # 10.
I thought that because it is for a motor like mentioned in 240.4(G) the small conductor rule does not apply, but I cant find anything in 430 to support this hunch and feel that a # 10 must be used.
Help if you can
Thanks
Kevin