Presently have an existing power distribution box fig #1. It was manufactured by a company but does not have a UL label. Breakers and receptacles are name brand and UL approved. The box is made of heavy gauge stainless steel and has plenty of cubic inches. The breakers and receptacles are mounted to the cover. The breakers do not plug into a buss for power. A terminal block is mounted in the junction box with 4 AWG conductors 3 phase 120/208 volt, and feed down stream off a 90 Amp breaker. The breaker in the stainless steel box is feed with 6 AWG conductors to the 3 pole 40 amp breaker.
Due to budgeting reasons we would like to do some modifications rather than a new installation. The power at the box is 4 AWG 3 Phase 4 Wire120/208, 90 Amps. With the following calculations, can figure #2 or #3 be used?
Calculation: #2
Three 20 Amp recpts. 3 x 20 amps x 80% = 48 amps
Three 15 Amp recpts. 3 x 15 amps x 80% = 36 amps
TOTAL = 84 amps
Calculation: # 3
Six 20 Amp recepts. 6 x 20 amps x 80% = 96 amps.
NOTE: The loads of these recpts. will vary and most likely will not be maxed out.
Due to budgeting reasons we would like to do some modifications rather than a new installation. The power at the box is 4 AWG 3 Phase 4 Wire120/208, 90 Amps. With the following calculations, can figure #2 or #3 be used?
Calculation: #2
Three 20 Amp recpts. 3 x 20 amps x 80% = 48 amps
Three 15 Amp recpts. 3 x 15 amps x 80% = 36 amps
TOTAL = 84 amps
Calculation: # 3
Six 20 Amp recepts. 6 x 20 amps x 80% = 96 amps.
NOTE: The loads of these recpts. will vary and most likely will not be maxed out.
