A 400A service is worth considering when a documented assessment shows that a smaller service will not reasonably support the property’s planned electrical demand. A large house, two EVs or an induction range alone does not establish that need. Compare the calculated loads, practical load-management options, utility requirements and full construction cost before choosing a service size.
Service capacity is different from panel space
The service supplies the property. Panels distribute that supply to individual circuits. Adding another panel can create circuit space, but it does not increase the capacity of the utility connection or upstream equipment.
Likewise, two panels labelled 200A do not by themselves prove that the home has a 400A service. The supply arrangement and equipment ratings must be identified. Read our sub-panel versus service-upgrade guide if those terms are being used interchangeably in quotes.
What makes a larger service worth assessing?
A major addition or additional dwelling with substantial new electrical demand.
Electric space heating or significant backup heat, together with other large loads.
Several high-demand uses such as EV charging, a workshop, pool equipment or electric water heating.
A defined long-term electrification plan that cannot be accommodated practically by the proposed smaller service.
These are reasons to investigate, not automatic rules. Equipment specifications and the applicable load calculation determine the design. The sum of every branch-circuit breaker is not the home’s calculated demand.
Compare 200A and larger options on the same scope
A 200A proposal may be appropriate where the assessed current and planned loads fit. Ask what future equipment is included in that assessment and what charging performance is expected if load management is proposed.
A larger-service proposal may provide capacity needed for substantial demand, but can involve different service equipment, metering, distribution and utility work. Confirm the actual service and equipment ratings rather than relying on “400A” as a shorthand description.
BC Hydro advises homeowners to assess capacity and avoid unnecessary oversizing. Ask the electrician to explain why the recommended size fits your project and whether a smaller upgrade or suitable management system would meet your needs.
Look beyond the price of the panel
The cost difference may include the meter arrangement, service conductors, distribution equipment, routing, excavation, restoration and coordination with BC Hydro. Existing overhead or underground infrastructure can affect the scope and schedule.
BC Hydro’s connection charges are separate from the contractor’s full installation price. Additional infrastructure work may change the utility cost. Do not compare a panel-replacement quote with a complete service-upgrade quote as if they are the same job.
Our service-upgrade page covers the installation process, and our 400A service planning page describes the information needed for higher-capacity projects.
What to prepare before requesting quotes
Current panel and meter exterior photos, with covers left in place.
Floor plans and the proposed use of additions or suites.
Models and electrical specifications for heating, hot water, cooking, EV charging and workshop equipment.
A list separating committed future upgrades from possibilities.
Information about the existing service route and access constraints.
Ask the quote to identify the capacity assessment, utility coordination, permits, exclusions and assumptions. If load management is part of the design, ask which equipment it controls and what happens when several loads operate together.
Homeowner questions
Does a 400A service use more electricity by itself?
The service rating describes capacity, not how much energy your appliances consume. Your actual usage depends on the equipment and how it operates; confirm any applicable utility billing implications for the proposed connection.
Will 200A handle an EV, heat pump and induction range?
It may, but there is no reliable answer from those names alone. Model specifications, other house loads and the approved assessment are needed. Do not assume either that 200A is sufficient or that 400A is mandatory.
Can I upgrade later?
Potentially, but later changes can repeat equipment, excavation or finishing work. Discuss realistic future plans now so the current design accounts for them appropriately.
Should I choose 400A just for resale?
Capacity that supports a defined project has a clear purpose. An assumed resale premium does not justify a larger installation without evidence or an assessment of what the property needs.
Choose capacity from a plan
For service planning in North Delta and the Lower Mainland, call Hundel Electric at (604) 358-5549 to speak directly with an electrician. Or text panel and meter exterior photos with your equipment list and plans. We can discuss what needs verification before comparing service options.