Work out inductors in parallel instantly with clear inputs, formula shown and shareable results.
Uncoupled inductors in parallel combine like parallel resistors: 1/Ltotal = 1/L1 + 1/L2 + 1/L3. Current divides in inverse proportion to inductance, so the smallest inductor carries the most current — the point that catches people out when paralleling chokes for higher current rating.
Parallel inductance
1/Ltotal = 1/L1 + 1/L2 + 1/L3; branch current is inversely proportional to L
Electrical results are planning estimates only. Verify against the applicable wiring rules (IEC 60364, BS 7671, NEC or local code) and have all installation work designed and checked by a qualified electrician.
Only with care. Tolerance differences make one carry more current, so it saturates first. Matched parts or a single larger inductor is safer.
Yes, and it complicates the result considerably. This calculation assumes the coils do not share flux.