What Size Breaker for Electric Dryer?
A electric dryer requires a 30A breaker with 10 AWG wire on a 240V dedicated circuit.
🔌 Wire Length & Voltage Drop Check
Electric Dryer Wiring Guide — NEC Requirements
Electric dryers require a dedicated 30A/240V circuit. The receptacle must be a NEMA 14-30 (4-prong) for all new installations per NEC 250.140.
Pro Tip
💡 Older homes may have 3-prong NEMA 10-30 outlets. NEC requires 4-prong for new installations but allows existing 3-prong to remain.
Why a 30A Breaker?
The electric dryer draws approximately 24A at 240V (5400W). A 30A breaker provides adequate protection.
Wire Sizing per NEC 310.16
For a 30A/240V circuit, 10 AWG copper is required per NEC Table 310.16 at 75°C. For runs over 75 feet, upsize to 8 AWG (runs over 50ft). Use our Wire Size Calculator and Voltage Drop Calculator.
Complete Parts List
To wire a electric dryer circuit: a 30A double-pole breaker, 10 AWG NM-B cable (Romex) for interior runs or THHN/THWN-2 in conduit for exposed runs, a NEMA 14-30 receptacle (or hardwired), cable clamps, and appropriate junction boxes.
Disclaimer: This guide is for reference only. All electrical work must be performed by or verified by a licensed electrician. Local codes may differ from NEC.