Can I install a Level 2 EV charger in my detached garage in New Brunswick and what's involved?

Yes, you can install a Level 2 EV charger in a detached garage in New Brunswick — it's one of the most common EV charging setups in the province, especially for homes in suburban and rural areas where detached garages are the norm. However, running power to a detached structure adds complexity and cost compared to an attached garage installation.

What You Need: The Basics

A Level 2 EV charger requires:

• 240V circuit (same voltage as your dryer or stove)


• 40-amp circuit for most chargers (supporting 32 amps continuous charging — the CEC requires circuits to be rated at 125% of continuous load)


• 6-gauge copper wire (or 4-gauge aluminum) for a 40-amp circuit


• GFCI protection — either a GFCI breaker in the panel or a charger with built-in GFCI (most modern units have this)


• TSANB electrical permit and inspection

Popular Level 2 chargers for home use include the ChargePoint Home Flex ($600–$800), Grizzl-E ($500–$600 — a Canadian-made option), Tesla Wall Connector ($550–$650, works with adapters for non-Tesla vehicles), and Emporia Energy ($500–$600). All are rated for outdoor/garage installation.

The Detached Garage Challenge: Getting Power There

The key difference from an attached garage installation is that you need to run a dedicated circuit from your main electrical panel in the house to your detached garage. There are two methods:

Underground Feed (Recommended)

This is the preferred method for permanent, reliable power delivery:

Trench from house to garage — The Canadian Electrical Code requires underground cable to be buried at specific depths:

- 600mm (24 inches) minimum for cable in rigid PVC conduit
- 900mm (36 inches) for direct-burial rated cable without conduit
- In practice, most New Brunswick electricians go with conduit at 24 inches for easier future maintenance

Cable specifications — For a 40-amp EV circuit plus basic garage lighting/outlets, your electrician will likely run #6 AWG copper NMWU (rated for direct burial) or pull wire through conduit. For a sub-panel approach (recommended — see below), heavier wire supports multiple circuits.

Frost depth consideration — New Brunswick's frost line depth varies from 1.2 metres (48 inches) in Fredericton to 1.0 metre (39 inches) in coastal Moncton. While the CEC burial depth is measured from grade, going deeper provides extra protection against frost heaving that can damage conduit joints. Most experienced NB electricians dig to at least 30 inches.

Trench cost — Expect $15–$30 per linear foot for hand-digging or $8–$15 per foot with a mini-excavator. A 50-foot run (typical for most properties) costs $400–$1,500 just for the trench. Rocky soil — common in parts of Saint John, the Kingston Peninsula, and the Upper Saint John River Valley — can increase costs significantly.

Overhead Feed

Less common but sometimes necessary:

• Cable runs on a messenger wire between house and garage


• Must maintain 3.7 metres (12 feet) clearance over walkways, 4.0 metres (13 feet) over driveways


• Less expensive to install but more exposed to Maritime weather (ice, wind, falling branches)


• Not recommended if the garage is more than 15 metres from the house

Sub-Panel vs. Direct Circuit

Direct circuit approach: Run a single 40-amp, 240V circuit from the house panel to the garage for the EV charger only. Simplest and cheapest if the garage has no other electrical needs. Cost: $1,500–$3,000 total.

Sub-panel approach (recommended): Install a small sub-panel (60-amp or 100-amp) in the garage, fed by a feeder cable from the house. This supports the EV charger PLUS garage lighting, outlets, a garage door opener, and future needs like a workshop or heated workspace. Cost: $2,500–$5,000 total, but far more practical long-term.

Most electricians in New Brunswick recommend the sub-panel approach because:

• Adding circuits later means just adding breakers, not running new cable from the house


• A 60-amp sub-panel costs only $200–$400 more in materials than a direct circuit


• It meets the CEC requirement for a disconnecting means in the detached structure

Panel Capacity: Will Your Main Panel Handle It?

Before any installation, your electrician must verify your main panel has capacity for the additional 40-amp (or 60-amp feeder) load. This is particularly important in New Brunswick homes with electric baseboard heat, which already places heavy demand on the panel.

Typical scenarios:

• 200-amp panel with baseboard heat: Usually has room for a 40-60 amp garage feeder, but a load calculation is essential


• 100-amp panel with baseboard heat: Very likely needs a panel upgrade to 200 amps before adding an EV charger — add $2,500–$4,500 to the project cost


• 200-amp panel with heat pump: More headroom available, usually straightforward

Permit and Inspection

TSANB (Technical Safety Authority of New Brunswick) requires a permit for this work — it involves a new circuit, underground or overhead wiring, and potentially a sub-panel. Your electrician will:

Apply for the permit (fee: approximately $75–$150)

Complete all rough-in wiring

Request TSANB inspection

Make any corrections if needed

Receive approval, then energize the circuit

Timeline: expect 1–3 weeks from permit application to inspection, depending on TSANB's current workload and your area.

Total Cost Summary

| Component | Cost Range |
|-----------|------------|
| EV charger unit | $500–$800 |
| Trenching (50 ft) | $400–$1,500 |
| Underground cable & conduit | $300–$800 |
| Sub-panel in garage | $200–$400 |
| Electrician labour (full day) | $600–$1,200 |
| TSANB permit | $75–$150 |
| Total (sub-panel approach) | $2,500–$5,000 |
| Panel upgrade if needed (100A→200A) | Add $2,500–$4,500 |

NB Power and Rebate Programs

Check NB Power's current incentive programs — they have periodically offered rebates for EV charger installation as part of their electrification initiatives. The federal government's iZEV program and Canada Greener Homes programs have also offered EV infrastructure incentives. These programs change frequently, so verify current availability before starting your project.

Practical Tips for NB Homeowners

• Plan the trench route carefully — avoid septic fields, water lines, and NB Power's underground service (call before you dig: 1-800-565-1NOB for New Brunswick One-Call)
• Install the charger inside the garage rather than on the exterior to protect it from Maritime salt air and ice
• Consider a NEMA 14-50 outlet instead of (or in addition to) a hardwired charger — this gives you flexibility to swap charger brands or use a portable charger for travel
• Insulate the garage if you plan to charge in extreme cold — batteries charge more efficiently above 0°C, and a slightly heated garage in January can improve charging speed by 10–20%

---

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 →