⚡ Key Takeaways<\/p>\n
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- Never connect a generator directly to an outlet or ‘backfeed’ through a dryer socket \u2014 this is illegal and can kill utility workers.<\/li>\n
- The correct method is a transfer switch or an interlock kit installed in your electrical panel.<\/li>\n
- Portable generators must always be operated outdoors \u2014 carbon monoxide kills quickly in enclosed spaces.<\/li>\n<\/ul>\n<\/div>\n
Why You Can’t Just Plug a Generator into an Outlet<\/h2>\n
Connecting a generator to a house outlet via an extension cord (sometimes called a ‘suicide cord’ or ‘backfeed cord’) sends power backwards through your home’s wiring, back through your meter, and out onto the utility lines. Utility workers restoring power after an outage can receive a fatal electric shock from these energised lines. This is why backfeeding is illegal in every jurisdiction and why transfer switches are required.<\/p>\n
Method 1: Transfer Switch (Safest and Best)<\/h2>\n
A transfer switch is installed next to your main panel. It physically disconnects your home from the utility supply before connecting the generator. This makes backfeed to the grid impossible. Transfer switches come in two types:<\/p>\n
Manual Transfer Switch<\/h3>\n
You manually switch the transfer switch from UTILITY to GENERATOR when needed. These cost $200\u2013$500 for the unit, plus installation (typically $500\u2013$1,000 for a qualified electrician). They protect a subset of your most important circuits.<\/p>\n
Automatic Transfer Switch (ATS)<\/h3>\n
An ATS detects a power outage and automatically starts the generator and switches over within seconds. Required for standby (whole-home) generators. These cost $500\u2013$1,500 plus installation and are usually included in standby generator installation packages.<\/p>\n
Method 2: Generator Interlock Kit<\/h2>\n
A generator interlock kit is a mechanical device fitted to your existing panel that prevents the main breaker and the generator input breaker from both being on simultaneously. It’s a more affordable alternative to a transfer switch \u2014 the kit itself costs $100\u2013$200 installed by an electrician \u2014 and it allows you to select which circuits run from the generator using the individual circuit breakers.<\/p>\n
An interlock kit requires the addition of a generator inlet (a weatherproof socket on the outside of the home) and appropriate wiring. The total installed cost is typically $400\u2013$800.<\/p>\n
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<\/p>\nOperating Safety: Carbon Monoxide<\/h2>\n
Portable generators must never<\/strong> be operated inside a home, garage, or any enclosed or semi-enclosed space. Generator exhaust contains carbon monoxide (CO), which is colourless, odourless, and lethal. Hundreds of people die from generator-related CO poisoning every year during power outages. Operate generators outdoors only, at least 20 feet from doors and windows, with exhaust directed away from the home.<\/p>\n