• Scott Hickey

How to Choose an Electrical Contractor

Cambridge Electrical Contractors

When it comes to having electrical installations, maintenance, or repairs performed, it’s not all about price. The quality of the work is important.

Substandard work is not only inefficient, and can lead to further expenses if it needs to be updated or corrected, but poor electrical work can be dangerous.

Incorrectly installed electrical systems can pose fire or electrical shock hazards that could result in expensive property loss or injuries to employees.

To help you choose a contractor that will perform safe, high-quality electrical installations, maintenance, and repairs for you, here are three keys to evaluating an electrical contractor.

Electrical Safety Authority (ESA) certification

The first thing to check if you’re considering an electrical contractor is their Electrical Safety Authority (ESA) license. The ESA inspects the work of electrical contractors and ensures that it is safe and complies with current electrical codes.

To obtain and maintain an ESA license, an electrical contractor must meet established standards of training, conduct, and performance. Electrical contractors must meet the minimum education and training requirements to be licensed by the ESA, and have the ESA inspect their work.

Additionally, the ESA provides ongoing training, and regularly updates the electrical code to improve the skills of ESA certified contractors, and improve the efficiency and safety of any work approved by an ESA inspector.

A certified electrical contractor should be willing and ready to provide their ESA license number.

Ontario Electrical League (OEL) membership

The Ontario Electrical League (OEL) was established to maintain and improve the integrity of licensed electrical work in Ontario.

Members of the OEL are committed to mastering and improving the electrical contractor’s trade. This means that an OEL contractor is more interested in providing the highest quality work and the best customer experience, than beating the competition.

One of the key points of the OEL code of conduct is to be respectful and welcoming of fair competition, to ensure that the customer’s best interests are always the focus of work.

Membership in the OEL is voluntary, and indicates that an electrical contractor is confident in their work, and realizes that their customers are their most valuable assets.


At the end of the day, a skilled electrical contractor will have the credentials to back up their claims.

When you’re evaluating an electrical contractor, don’t be shy about asking to see their certifications and what organizations they’re part of.

If you’re interested in finding out more about what a properly certified electrical contractor can do for you, get in touch with us at or call us at (519) 632-9618.

Diamond Controls is a fully accredited electrical contractor operating in Ontario.

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