What is a GFCI outlet and where are they required in New Brunswick homes?

GFCI Outlets: What They Are and Where NB Homes Need Them

A GFCI (Ground Fault Circuit Interrupter) outlet monitors the current flowing through it and trips in as little as 1/40th of a second if it detects current leaking to ground — which happens when electricity passes through water or a person. They're one of the most important safety devices in your home.

How GFCIs Work

The GFCI continuously compares the current on the hot wire to the current on the neutral wire. In normal operation, these are equal. If even 4–6 milliamps of difference is detected (meaning current is escaping through an unintended path), the GFCI trips and cuts power. For reference, it takes about 100 milliamps to cause a fatal heart rhythm disruption, so the GFCI trips well before that threshold.

Where GFCIs Are Required

The Canadian Electrical Code (CEC), which New Brunswick adopts, requires GFCI protection in these locations:

• Bathrooms — all receptacles
• Kitchens — receptacles within 1.5 metres of a sink
• Laundry areas — receptacles near the sink
• Garages and accessory buildings — all receptacles
• Unfinished basements — all receptacles
• Outdoors — all exterior receptacles
• Within 1.5 metres of any sink, tub, or water source
• Crawl spaces and below-grade areas
• Hot tub and pool equipment circuits (also need GFCI breakers)
• Boat houses and docks

These requirements apply to new construction and renovations where wiring is being modified. If your home was built in the 1970s or earlier, you likely have none of these protections — older homes in Moncton's north end, Saint John's south end, and Fredericton's older neighbourhoods commonly lack GFCIs entirely.

Types of GFCI Protection

GFCI receptacles ($15–$25 each) replace a standard outlet and have TEST and RESET buttons on the face. One GFCI receptacle can protect all downstream outlets on the same circuit.

GFCI breakers ($40–$80 each) install in your electrical panel and protect the entire circuit. These are used for hardwired equipment (like a hot tub or sump pump) where there's no receptacle to replace.

Installation Costs

Replacing a standard outlet with a GFCI receptacle is one of the most affordable electrical upgrades:

• DIY (if comfortable and legal): $15–$25 per outlet for the device. Note: in New Brunswick, homeowners can do basic receptacle replacements in their own home, but the work should still meet CEC standards.
• Licensed electrician: $100–$175 per outlet (device + labour), often less per outlet if you're having several done at once
• GFCI breaker installation: $150–$250 per breaker, installed in your panel

A whole-house GFCI upgrade (kitchen, bathrooms, exterior, garage, basement) for an older home typically runs $600–$1,500 depending on the number of locations.

Testing Your GFCIs

GFCIs should be tested monthly by pressing the TEST button — the power should cut off immediately. Press RESET to restore power. If the TEST button doesn't trip the outlet, or the RESET button won't stay in, the GFCI has failed and needs replacement. GFCIs have a lifespan of about 10–15 years.

Why This Matters in NB

New Brunswick's high humidity near the coast (Saint John, Shediac, Bathurst) and seasonal flooding in river communities along the Saint John River and Petitcodiac make GFCI protection especially critical. Water and electricity are a deadly combination — GFCIs are your first line of defence.

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