NEC Trade Compliance
Wire Size for 30 Amp 240V Circuit
NEC 2026 Trade Sizing Engine
Wire Gauge & Voltage Drop Calculator
Conductor ampacity Table 310.16 & branch circuit voltage drop compliance.
Recommended Conductor
10 AWG
Copper (75°C Insulation)
Voltage Drop
2.98V (1.2%)
PASS (<= 3% NEC Standard)
Conduit & Code References
1/2" EMT Conduit
NEC Table 310.16 (Copper 75C), NEC 210.19(A) Voltage Drop, NEC Chapter 9 Table 1 Conduit Fill