ECN Forum Forums General Topics of the Trade General Discussion Area Help with transformer calculations

Hello,
A 3KVA transformer would give you approx. 7.2 Amps @240V, and the primary is approx. 3.6 Amps @ 480V.
Next size up is a 4.5KVA, this would give approx. 10.8 Amps @240V, and the primary approx. 5.4 Amps @480V

Safe Day