Frequently Asked Questions
Residential & Commercial Electrical Services
Answers to common electrical-service questions from homeowners, businesses, contractors and property owners across the GTA.
Potentially, yes. The service rating alone does not determine whether an EV charger can be installed. The home's calculated electrical load and the proposed EV charging load need to be evaluated. Depending on the installation, possible solutions may include: Adjusting the charging current Installing an appropriate EMS/load-management system Managing multiple EV chargers Upgrading the electrical service
Not automatically. A load assessment should determine whether the existing service can support the proposed EV charging load. If adequate capacity is not available, an electrical service upgrade may be one option.
There is no single installation price because homes vary considerably. Typical factors include: 100 A or 200 A service Panel capacity Charger output Distance from panel to charger Indoor or outdoor installation Conduit requirements Garage or detached garage location Underground wiring Load management Panel/service upgrades Required electrical work A site assessment provides a more accurate price.
The quote should clearly identify what is included and whether applicable ESA notification/inspection fees are included or billed separately.
For a straightforward installation, a project-based quote can provide homeowners with a clear expected cost. If unexpected site conditions are discovered, additional work should be explained and approved before proceeding.
Yes. Buildbulb provides electrical troubleshooting and emergency electrical repair services for breaker, panel, wiring and other electrical issues.
Yes. In Ontario, an EV charger installation requires a notification of electrical work with the Electrical Safety Authority (ESA) before the work starts. This notification is separate from a municipal building permit. If you hire a Licensed Electrical Contractor (LEC), the contractor can file the notification with ESA on your behalf.
ESA recommends using a dedicated circuit for EV charging. Under the OESC requirements referenced by ESA, EVSE is supplied by a separate branch circuit unless an Energy Management System (EMS) is used in accordance with the applicable requirements.
Yes, depending on the specific Wall Connector equipment and the home's electrical capacity. A two-charger installation may use appropriate load-sharing or power-management functionality where supported, allowing the charging system to operate within the available electrical capacity. Two Wall Connectors should not simply be connected to a circuit without following the manufacturer's installation requirements.