Reference Guide CEC Section 26 & 30

AFCI & GFCI Protection: House Branch Wiring Layout

Modern Canadian Electrical Code requires Arc-Fault Circuit Interrupter (AFCI) protection on almost every 120V household branch circuit. Here's a clear visual map showing where AFCI, GFCI, both, or neither are required.

Read time: 10 min Scope: CEC Section 26 & 30 Target: Residential
MAIN PANEL 200A / CEC Bedrooms & Living AFCI Outlets & Lights require AFCI protection (CEC Rule 26-724) Bathroom GFCI GFCI required for washroom outlets. Switches > 1 m from tub/shower. Kitchen Counter AFCI + GFCI 2x 20A Circuits (or split 15A). GFCI required within 1.5 m of sink. Dedicated Fridge NEITHER* Dedicated 15A circuit. AFCI exempt (*GFCI if <1.5m to sink).
AFCI Protection GFCI Protection AFCI + GFCI Receptacle Exempt Dedicated Circuit

Key Ontario Electrical Safety Code highlights

Modern electrical installations prioritize arc-fault protection across all living areas. Here are the core rules every homeowner should know:

  • Kitchen countertops (Rule 26-712 / 26-722) — requires a minimum of two 20A branch circuits. Outlets must be spaced so no point along a counter is more than 900 mm (3 ft) from an outlet. Outlets within 1.5 m (5 ft) of a sink must be GFCI-protected.
  • Split receptacle (multi-wire branch circuit) caution — when replacing an older kitchen split-receptacle (fed by a 3-wire red/black/white cable), you must break off the brass/gold tab connecting the hot terminals. Leaving this tab intact short-circuits both 120V phases together (240V direct short) and will instantly blow the breaker.
  • Smoke alarm circuit rule (Rule 30-500) — in Ontario, hardwired smoke alarms are typically wired on a mixed circuit with a regularly used lighting branch. If the breaker trips, loss of room lighting alerts the homeowner immediately that fire protection has lost main power.
  • ESA permit notice — replacing an existing outlet or switch does not require a permit. Running new wire, adding new outlets, finishing a basement, or installing high-draw chargers strictly requires an ESA permit in Ontario.