Formula & method
DC: I = P / V; 1φ AC: I = P / (V × PF); balanced 3φ AC: I = P / (√3 × VLL × PF)
Worked example
2300 W at 230 V, single-phase, PF 1.0 = 10 A
Assumptions & safety boundary
Mathematical estimate only. Verify equipment datasheets, manufacturer instructions, electrical codes and qualified design before real-world use. Do not work on energized electrical systems unless you are qualified and authorized to do so.