Is it safe to use extension cords for appliances long term?

No, extension cords should never be used as permanent wiring solutions for appliances. Extension cords are designed for temporary use only and can create serious fire and electrocution hazards when used long-term.

Why Extension Cords Are Dangerous for Permanent Use

Extension cords lack the safety features of permanent wiring. They're not protected inside walls, making them vulnerable to damage from foot traffic, furniture, and pets. The connections at both ends create resistance points that generate heat, and over time, these connections can loosen, creating arcing and fire risks. Most extension cords also aren't rated for the continuous loads that appliances draw - a space heater pulling 1,500 watts through an undersized extension cord can overheat the wire and start a fire.

Under the Ontario Electrical Safety Code, extension cords cannot be used as permanent wiring. They're prohibited from being run through walls, ceilings, or floors, and they cannot be daisy-chained together. Insurance companies often deny claims for fires caused by improper extension cord use, especially when used as permanent solutions. The ESA considers this a code violation that creates liability for homeowners.

Appliances That Commonly Cause Problems

High-draw appliances are particularly dangerous on extension cords. Space heaters, window air conditioners, microwaves, and power tools can easily overload a standard household extension cord. Even smaller appliances like coffee makers or toasters can be problematic if the extension cord isn't properly rated. The issue isn't just the appliance's power draw - it's the sustained load over time that causes heat buildup in the cord.

The Safe Solution: Dedicated Circuits

The proper solution is installing dedicated outlets where you need them. A licensed electrician can run new circuits from your electrical panel to provide permanent, code-compliant power. This typically costs $300-600 per new outlet in Ottawa, depending on the distance from the panel and any obstacles like finished walls. For high-draw appliances, dedicated 20-amp circuits may be required instead of standard 15-amp circuits.

When Extension Cords Are Acceptable

Extension cords are safe for temporary use - think holiday lights, occasional power tool use, or temporarily powering a device while rearranging furniture. Use only CSA-approved cords rated for your specific application, and never exceed the cord's amperage rating. Outdoor extension cords should be used outdoors, and indoor cords should never be used in wet locations.

If you're relying on extension cords because you don't have enough outlets, it's time to upgrade your electrical system. Electrical Ottawa can assess your power needs and install proper outlets where you need them. This investment in permanent wiring eliminates fire risks, satisfies insurance requirements, and adds value to your home while keeping your family safe.

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Electrical Ottawa connects you with vetted, ESA-licensed electricians from the Ottawa Construction Network:Ottawa Electrical Contractors:

• Ring Electric Inc.
• LB Electric
• CLX Electric