What is the minimum electrical panel size required for a new home in New Brunswick?
What is the minimum electrical panel size required for a new home in New Brunswick?
Minimum Electrical Panel Size for New Homes in New Brunswick
The minimum electrical panel size for new residential construction in New Brunswick is 100 amps, as specified by the Canadian Electrical Code (CEC) which is adopted by the province through the Electrical Installation and Inspection Act administered by TSANB. However, virtually no electrician in New Brunswick installs 100A panels in new construction anymore — 200 amps has been the de facto standard since the early 2000s, and there are very practical reasons for this.
Why 200A Is the Real Standard
The CEC sets 100A as the minimum for single-family dwellings, but this minimum was established when homes had fewer electrical demands. A typical new 2,000 sq ft home in New Brunswick with electric baseboard heating, an electric range, electric dryer, and hot water tank can easily draw 80-100 amps at peak — leaving zero room for additions like a heat pump (30-50A), EV charger (40-50A), or workshop circuits.
NB Power's residential service delivery supports both 100A and 200A without additional charges for the standard overhead connection. The cost difference between a 100A and 200A panel at the time of new construction is only $300-$600 in materials and labour. Upgrading from 100A to 200A after the fact costs $2,500-$4,500. Installing 200A from the start is the only financially sensible choice.
New Construction Panel Specifications
A standard new home electrical panel in New Brunswick in 2025 includes:
- 200A main breaker panel with minimum 40 circuit spaces (commonly 42 or even 60 spaces in larger homes)
- 200A rated meter base and mast meeting NB Power's current specifications
- Copper bus bars (standard in all modern panels)
- Main bonding jumper and grounding electrode system connected to the home's grounding rod(s) and/or water pipe
- AFCI breakers for all bedroom circuits (CEC requirement)
- GFCI breakers or receptacles for bathrooms, kitchen counters, laundry, garage, and all exterior outlets
- Dedicated circuits for kitchen appliances (2 x 20A small appliance branch circuits), dishwasher, microwave, laundry, bathroom, furnace/heat pump, range (40-50A), dryer (30A), and hot water tank (30A)
The most commonly installed panels in New Brunswick new construction are:
- Siemens — Widely available through Atlantic electrical suppliers, good quality, competitive pricing. A 200A/42 space panel runs $250-$350
- Eaton Cutler-Hammer (CH series) — Popular with many NB electricians for reliability and breaker availability. Similar pricing
- Square D Homeline or QO — Square D QO is considered the premium residential option. A 200A/42 space QO panel runs $400-$550
What About 400A Service?
Some larger homes in New Brunswick — particularly custom builds over 3,500 sq ft with in-floor heating, workshops, pools, or multiple EV chargers — require 400A service. This is delivered as two 200A panels fed from a single 400A meter base. The additional cost over standard 200A service is $3,000-$6,000 including the larger meter base and second panel. NB Power may need to upgrade their transformer or service line for 400A, which can add delays of 4-8 weeks.
Future-Proofing Your Panel
Even with 200A service, circuit space runs out fast. A new home can easily use 30-35 of 42 available circuit spaces before the owners move in. Smart electricians in New Brunswick recommend:
- Install a 60-space panel (only $50-$100 more than 42-space) to ensure room for future circuits
- Pre-wire a 50A circuit to the garage for a future EV charger even if you do not own an EV yet. The wire cost during construction is minimal ($200-$400) versus $800-$1,500 to retrofit later
- Run a conduit to the exterior for future generator connection or solar panel inverter hookup
- Leave 4-6 spare breaker spaces clearly labeled in the panel schedule
All new home electrical installations in New Brunswick require a TSANB permit. New construction typically has 2-3 inspections: rough-in (before insulation and drywall), pre-cover (insulation installed, drywall not yet up), and final (everything complete). The permit fee is based on the scope of work and typically runs $200-$500 for a full new home electrical installation. Your electrician or general contractor normally handles the permit application.
Cost Summary for New Construction
| Component | Cost Range |
|-----------|------------|
| 200A panel (40-60 space) | $250 - $550 |
| 200A meter base and mast | $300 - $600 |
| Full home rough-in wiring (labour + materials) | $10,000 - $18,000 |
| Fixtures and devices (outlets, switches, lights) | $2,000 - $5,000 |
| TSANB permit and inspections | $200 - $500 |
| Total electrical for new 2,000 sq ft home | $15,000 - $25,000 |
These figures are typical for the Moncton, Fredericton, and Saint John markets as of 2025. Rural areas may be slightly higher due to travel time, and custom homes with extensive lighting designs or smart home wiring will be at the upper end.
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