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NEC Article 422 — Appliances

Updated Mar 26, 2026
Wiring requirements for fixed and portable appliances: dedicated circuits, disconnects, GFCI protection.

NEC 422: dedicated circuits required for major appliances. Dishwasher: 20A dedicated. Garbage disposal: 20A (may share with dishwasher in some jurisdictions). Electric range/oven: 40-50A, 125/250V. Electric dryer: 30A, 125/250V. Water heater: 20-30A dedicated, 240V. Microwave: 20A dedicated. Bathroom heater: 20A GFCI-protected. HVAC: per Article 440. 422.16 flexible cords for appliances: max 6ft for counter-mounted, 4ft for dishwasher, 3ft for disposer. 422.31 disconnects: in sight from appliance or lockable. 422.51 cord-and-plug as disconnect for portable appliances. 422.5 GFCI: vending machines, tire inflation, electric vehicle equipment.

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NECappliancededicated-circuitGFCIdisconnect
DETAILS
code year
2023
code section
Article 422
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