30 kVA to amps

On a 208 V three-phase system, 30 kVA draws 83.27 amps; at 480 V it draws 36.08 amps, and on 240 V single phase 125 amps.

30 kVA to amps at common voltages

30 kVA in amps by voltage
Voltage	Amps, A	Breaker, continuous load, A
240 V single phase	125	175
208 V three phase	83.27	110
240 V three phase	72.17	100
480 V three phase	36.08	50

30 kVA in amps by voltage.

How to convert 30 kVA to amps

On a three-phase system, amps = kVA × 1,000 ÷ (1.732 × volts): 30 kVA × 1,000 ÷ (1.732 × 208 V) = 83.27 A per line. On single phase, amps = kVA × 1,000 ÷ volts: 30 kVA × 1,000 ÷ 240 V = 125 A.

The breaker column assumes a continuous load, sized at 125% of the current, and rounds up to the next standard breaker. Transformers and generators have their own protection rules; follow the nameplate.

Nearby values

Amps for 15 to 150 kVA at 208 V three phase and 480 V three phase
kVA	208 V three phase, A	480 V three phase, A
15	41.64	18.04
30	83.27	36.08
45	124.91	54.13
75	208.18	90.21
100	277.57	120.28
150	416.36	180.42

kVA to amps calculator

Convert

Apparent power

kVA

Voltage

Phase

Result

83.27 A

Full-load current on each line. Size breakers and conductors from the nameplate and the code, not from this figure alone.

Current per line: 83.27 A
Breaker at 125% (continuous): 110 A

How it is calculated

Amps = 30 kVA × 1,000 ÷ (208 V × √3) = 83.27