And the size of your service is expressed in amps as well. The current your home uses when you turn on lights or run appliances is measured in amps. The un-metered neutral wire is connected to neutral bus bars in the panel and doesn’t require a breaker. The two 120 volt wires exiting the meter hook up to your panel main breaker. The hot leads are metered while the neutral is not. These three wires come from the street, either underground or from a utility pole, and enter your hydro meter on one end.
The two hot wires when used together provide 240 volts for appliances like stoves and clothes dryers. Homes in North America are wired almost exclusively using single phase electricity service consisting of two hot wires of 120 volts each and a neutral wire. And if you have plans for any other big electrical additions like a hot tub.įirst I’ll give you an explanation about what exactly the ‘service’ is, be it 100, 200 or even 400 amps. So do you need 200 amps or not? It’s a tough question and depends on the equipment currently installed in your home. But this was overturned by Doug Ford in May. They passed legislation requiring all new homes to have a 200 amp panel. Do you need a 200 amp service for your electric car? The previous Ontario government thought so.
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