What electrical work can I do myself versus what requires a licensed electrician in New Brunswick?

DIY vs. Licensed Electrician — What's Allowed in New Brunswick

New Brunswick is one of the more homeowner-friendly provinces for DIY electrical work — the law specifically allows homeowners to perform electrical work on their own primary residence. But there are important boundaries between what's safe and legal to DIY, what requires a permit even for DIY, and what should always be left to a licensed professional.

What You Can Do Yourself Without a Permit

These are considered maintenance activities — not new electrical work — and don't require a TSANB permit:

• Replace light fixtures (like-for-like swap on existing wiring)
• Replace light switches (single-pole, same type)
• Replace dimmer switches (same circuit, same box)
• Replace electrical outlets (same type — don't swap a 15A for a 20A without verifying the circuit)
• Replace a doorbell transformer or button
• Install low-voltage landscape lighting (the 12V portion only — the transformer connection to 120V may require a permit)
• Replace a thermostat (low-voltage, same type)
• Change light bulbs (obviously)
• Reset breakers and GFCI outlets
• Test smoke and CO detectors, replace batteries

Key rule: The replacement must be like-for-like. Swapping a toggle switch for another toggle switch is maintenance. Swapping a toggle switch for a smart switch that requires a neutral wire you don't have crosses into new work territory.

What You Can Do Yourself WITH a TSANB Permit

New Brunswick law allows homeowners to perform more extensive electrical work on their own primary residence, but a permit is required and the work must be inspected by TSANB:

• Add new outlets or switches
• Run new circuits from the panel
• Install a ceiling fan (new box, new wiring)
• Add outdoor outlets or lighting
• Wire a detached garage, shed, or workshop
• Install baseboard heater circuits
• Add bathroom exhaust fan wiring
• Install recessed pot lights
• Run cable for EV charger outlet (240V)
• Replace a circuit breaker
• Upgrade individual circuits (14 AWG to 12 AWG)

The permit process for homeowners:

Contact TSANB (1-800-999-0336) and apply for a homeowner electrical permit

Describe the work you plan to do

Pay the permit fee ($50-$100 depending on scope)

Do the work following the Canadian Electrical Code

Call TSANB to schedule an inspection when work is complete

Inspector visits, verifies compliance, issues certificate

Important limitations on homeowner permits:

• Work must be on your own primary residence — you cannot do electrical work on rental properties, investment properties, or someone else's home


• You must do the work yourself — you can't hire an unlicensed person and claim it's homeowner work


• The work must meet the same code standards as professionally installed work


• If the work fails inspection, you must correct it at your own expense (or hire a licensed electrician to fix it)

What Should ALWAYS Be Done by a Licensed Electrician

While technically legal for homeowners in some cases, these tasks carry significant safety risks that make professional installation strongly recommended:

Service upgrades (100A to 200A):

• Involves working near energized service entrance conductors that remain live even with the main breaker off


• Requires NB Power coordination for disconnect and reconnect


• Incorrect installation can cause panel fires, electrocution, or damage to your home's entire electrical system


• Cost to hire: $2,500-$4,500 — money well spent for this level of risk

Panel replacements:

• Same risks as service upgrades — live conductors, complex bus bar connections, proper torquing of all terminals


• A mistake here affects every circuit in your home


• Cost to hire: $1,500-$3,500

Aluminum wiring repairs or remediation:

• Aluminum branch circuit wiring (common in 1965-1978 New Brunswick homes) requires specific connectors (COPALUM or AlumiConn), anti-oxidant compound, and CO/ALR-rated devices


• Incorrect aluminum connections are a leading cause of residential electrical fires


• Cost to hire: $3,000-$6,000 for whole-home remediation

Knob and tube wiring work:

• The brittle insulation crumbles when disturbed, creating shock and fire hazards


• Splicing modern wire to K&T requires specific methods and approved junction boxes


• Cost to hire: Varies widely depending on scope

Hot tub or pool wiring:

• Requires specific bonding, GFCI protection, and underground cable routing


• Errors can create electrocution hazards in wet environments — the most dangerous type of electrical fault


• Cost to hire: $800-$2,500

Commercial or multi-unit residential:

• Homeowner permits don't cover commercial spaces, rental buildings with more than 2 units, or common areas


• Only licensed electricians can do this work in New Brunswick

The Insurance Consideration

Your New Brunswick home insurance covers DIY electrical work on your primary residence if it meets code requirements. However:

• If a fire or injury results from improperly done DIY electrical work, your insurer can deny the claim
• Having a TSANB inspection certificate proves the work was code-compliant — this is your protection
• Work done without a required permit is by definition non-compliant and may not be covered
• Some insurance policies specifically require licensed electrician work for major upgrades — check your policy

Cost Comparison: DIY vs. Professional

| Task | DIY Cost (materials + permit) | Professional Cost |
|------|------------------------------|-------------------|
| Add 1 outlet | $30-$60 + $50 permit = $80-$110 | $150-$300 |
| Add 4 pot lights | $100-$250 + $75 permit = $175-$325 | $600-$1,200 |
| Run circuit to garage | $150-$400 + $75 permit = $225-$475 | $800-$2,000 |
| Install ceiling fan | $20-$60 + $50 permit = $70-$110 | $200-$400 |
| Install 240V dryer outlet | $80-$175 + $50 permit = $130-$225 | $350-$775 |
| Install EV charger outlet | $100-$250 + $75 permit = $175-$325 | $800-$2,000 |

DIY savings range from 40-70% on materials and labour, but you're investing your own time (typically 2-4× longer than a professional for the same task) and accepting the risk of inspection failure and rework.

When DIY Makes Sense

• You have basic electrical knowledge and comfort working with wiring
• The task is straightforward (adding outlets, running simple circuits)
• Your home has modern copper wiring in good condition
• You have the time to do the work carefully and correctly
• You're willing to get a permit and have the work inspected

When Hiring a Professional Makes Sense

• Any work involving the panel or service entrance
• Your home has aluminum wiring, knob and tube, or any wiring you're not 100% sure about
• The work involves 240V circuits or high-amperage loads
• You need the work done quickly and correctly the first time
• The cost difference is modest relative to the safety risk
• You're doing the work for resale (buyers prefer professionally completed electrical work)

Finding Licensed Electricians in New Brunswick

All electricians working in New Brunswick must be licensed through TSANB. Verify any electrician's licence before hiring by contacting TSANB at 1-800-999-0336. Get 3 quotes for any project over $500, ask for references from similar projects, and confirm they carry liability insurance and WorkSafeNB coverage.

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