What are the electrical requirements for a home workshop or woodworking shop in New Brunswick?

Setting up a home workshop with proper electrical infrastructure is one of the most common projects electricians handle in New Brunswick — whether it's a dedicated room in the basement, a section of the garage, or a purpose-built outbuilding. Getting the electrical right from the start prevents nuisance breaker trips, protects your expensive tools, and keeps you safe.

Assessing Your Power Needs

The first step is listing your equipment and their electrical requirements:

Typical 120V tools (15-20 amp circuits):

• Benchtop drill press: 5–8 amps


• Router: 10–15 amps


• Jigsaw/circular saw: 12–15 amps


• Sanders (belt, orbital): 5–10 amps


• Shop vacuum: 10–12 amps


• Bench grinder: 5–8 amps


• Dust collector (small): 10–15 amps

Typical 240V tools (dedicated circuits required):

• Table saw (contractor grade): 15–20 amps at 240V


• Cabinet table saw: 20–30 amps at 240V


• Jointer (6-inch+): 15 amps at 240V


• Planer (12-inch+): 15–20 amps at 240V


• Dust collector (2HP+): 15 amps at 240V


• Air compressor (5HP+): 20–30 amps at 240V


• Welder (MIG/TIG): 30–50 amps at 240V

Circuit Layout Recommendations

A well-designed workshop electrical layout includes:

Minimum setup (basic hobbyist):

• 2 dedicated 20-amp, 120V circuits for general outlets


• 1 dedicated 20-amp, 120V circuit for lighting


• 1 dedicated 240V circuit for your largest tool (table saw)


• Total panel capacity needed: 60 amps (sub-panel)

Recommended setup (serious woodworker):

• 4 dedicated 20-amp, 120V circuits for outlets (split between bench areas and machine areas)


• 1 dedicated 20-amp, 120V circuit for lighting


• 2–3 dedicated 240V circuits for major tools


• 1 dedicated circuit for dust collection


• Total panel capacity needed: 100 amps (sub-panel)

Full workshop (semi-professional):

• 6+ dedicated 20-amp, 120V circuits


• 1–2 dedicated lighting circuits


• 3–4 dedicated 240V circuits


• Dedicated dust collection circuit


• Dedicated air compressor circuit


• Total panel capacity needed: 100–200 amps (sub-panel)

Outlet Placement and Types

Workshop outlet placement is different from residential — plan for how you'll actually use the space:

Perimeter outlets: Install duplex receptacles every 1.2 metres (4 feet) along bench walls — far more frequently than standard residential spacing. This prevents the dangerous practice of running extension cords across walkways to reach tools.

Ceiling drops: For tools in the centre of the shop (table saw, assembly table), install retractable cord reels or ceiling-mounted outlet boxes. This keeps cords off the floor where they create trip hazards and get buried in sawdust.

240V outlets: Install these within 1.5 metres of where each major tool will be positioned. Use the correct receptacle type:

• NEMA 6-20 for 20-amp, 240V (most 240V power tools)


• NEMA 6-30 for 30-amp, 240V (larger tools, welders)


• NEMA 6-50 for 50-amp, 240V (large welders, industrial equipment)

Floor outlets: If your workshop has a concrete floor and tools in the centre, consider floor-mounted outlet boxes with weatherproof covers (to keep sawdust out). These need to be planned before concrete is poured in new construction.

Lighting Requirements

Workshop lighting is critical for both safety and quality of work:

• Minimum 500 lux at workbench surfaces (CEC and good practice)
• LED shop lights are the modern standard — 4-foot or 8-foot LED tube fixtures provide even, shadow-free light
• Plan for 50 watts of LED per 100 square feet of shop space as a starting point
• Install lights on a separate circuit from tool outlets — when a tool trips a breaker, you don't want to be plunged into darkness while operating a spinning blade
• A typical 20×20 foot workshop needs 6–8 four-foot LED fixtures for adequate general lighting
• Add task lighting at the table saw, bandsaw, and lathe positions

Cost for LED shop lighting: $200–$600 for fixtures, plus $200–$400 for installation on a dedicated circuit.

Sub-Panel Installation

For any workshop beyond the most basic setup, a dedicated sub-panel is the right approach:

In-house workshop (basement or attached garage):

• Install a 60–100 amp sub-panel fed from your main panel


• Distance from main panel is usually short, keeping wire costs down


• Cost: $800–$2,000 for the sub-panel, feeder cable, and installation

Detached workshop/garage:

• Same sub-panel requirements, but add underground or overhead feeder costs


• Underground trench: $15–$30 per linear foot (hand dig) or $8–$15 per foot (excavator)


• Feeder cable for 100-amp service: $5–$10 per foot for copper, less for aluminum


• A 50-foot underground run with 100-amp sub-panel: $2,500–$5,000 total

TSANB Permit Requirements

All workshop electrical work in New Brunswick requires a TSANB (Technical Safety Authority of New Brunswick) permit and inspection:

• New circuits from existing panel: permit required
• Sub-panel installation: permit required
• Underground feed to detached building: permit required
• Permit fee: $75–$200 depending on scope

Your electrician handles the permit application, but make sure it's included in their quote. Some contractors in more rural areas of New Brunswick (Woodstock, Grand Falls, Edmundston) may be tempted to skip permits for "just a garage" — don't agree to this. Unpermitted work voids insurance coverage and creates problems if you sell the home.

Total Cost Estimates

| Workshop Level | In-House | Detached Building |
|---------------|----------|-------------------|
| Basic (2 circuits + 1 240V) | $800–$1,500 | $2,500–$4,000 |
| Recommended (sub-panel + 4–6 circuits) | $1,500–$3,000 | $3,500–$6,000 |
| Full workshop (100A sub-panel + 8+ circuits) | $2,500–$5,000 | $5,000–$10,000 |

These include labour, materials, permit, and inspection. Add $200–$600 for LED lighting.

New Brunswick-Specific Considerations

Heating the workshop: If you plan to heat your workshop with electric heaters, factor this into your panel sizing. A 20×20 foot insulated workshop in Fredericton or Miramichi needs approximately 4,000–6,000 watts of electric heat to stay comfortable in winter, which adds 25–35 amps to your load calculation.

Moisture control: Basement workshops in New Brunswick are prone to dampness, especially in spring when snow melt raises the water table. All outlets in below-grade workshops should ideally be installed at least 300mm (12 inches) above floor level, and a dehumidifier on a dedicated circuit is strongly recommended.

Dust collection: Dedicated dust collection is important for any enclosed workshop. A central dust collector (2–3 HP) needs its own 240V circuit and should be on a separate breaker so it can run independently of your tools. Good dust collection also reduces the fire risk from airborne wood dust — a genuine safety concern in enclosed spaces.

Insurance notification: If you're setting up a workshop in your home or on your property, notify your home insurance provider. Some policies exclude or limit coverage for home-based workshop activities, particularly if you sell products or use industrial equipment. Getting proper electrical permits and inspections helps support your insurance coverage.

---

Find a Electrical Contractor

New Brunswick Electrical connects you with experienced contractors through the https://newbrunswickconstructionnetwork.com:

• A+ Solar Solutions ✓
• A&S Electric Ltd. ✓
• Blue Energy Ltd ✓

View all electrical contractors →