Transformer Full-Load Current Chart

This table shows full-load currents in Amperes for common transformer kVA ratings, at standard secondary distribution voltages.

Three-Phase Transformer FLC (Amperes)

kVA Rating	208 V	240 V	480 V	2400 V	4160 V
15	41.6 A	36.1 A	18.0 A	3.6 A	2.1 A
30	83.3 A	72.2 A	36.1 A	7.2 A	4.2 A
45	124.9 A	108.3 A	54.1 A	10.8 A	6.2 A
75	208.2 A	180.4 A	90.2 A	18.0 A	10.4 A
112.5	312.3 A	270.6 A	135.3 A	27.1 A	15.6 A
150	416.4 A	360.8 A	180.4 A	36.1 A	20.8 A
300	832.7 A	721.7 A	360.8 A	72.2 A	41.6 A
500	1387.9 A	1202.8 A	601.4 A	120.3 A	69.4 A
1000	2775.8 A	2405.6 A	1202.8 A	240.6 A	138.8 A

Single-Phase Transformer FLC (Amperes)

kVA Rating	120 V	208 V	240 V	480 V	2400 V
5	41.7 A	24.0 A	20.8 A	10.4 A	2.1 A
10	83.3 A	48.1 A	41.7 A	20.8 A	4.2 A
15	125.0 A	72.1 A	62.5 A	31.3 A	6.3 A
25	208.3 A	120.2 A	104.2 A	52.1 A	10.4 A
37.5	312.5 A	180.3 A	156.3 A	78.1 A	15.6 A
50	416.7 A	240.4 A	208.3 A	104.2 A	20.8 A
100	833.3 A	480.8 A	416.7 A	208.3 A	41.7 A