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Can someone advise the difference between 100 amps and 200 amps and what is the best to have in your home.


Re: Electrical

200 amps provides twice as much load capacity than a 100 amp service.

Generally speaking if you have a standard size house and it is not heated with electric heat 100 amps is generally all you need.

However, if you are updating, the cost difference is not that great and the 200 amp service has become more or less a standard.

Re: Electrical
<a href="mailto:[email protected]" rel="nofollow">[email protected]</a> wrote:

Can someone advise the difference between 100 amps and 200 amps and what is the best to have in your home.


Here is some more info on load calculations to help you detrmine what size service your home needs.


Re: Electrical

Unless its a condo or very very small house go with the 200A. The labor cost is basically the same and the material cost is maybe $200 different.

Re: Electrical

What you are asking about is the service to your house.

You buy power from the electric company in the form of watts. Your bill measures this watts and multiplies it by time. Since most people use a lot of watts for a lot of hours, it is measured in 1000 watt hour increments and called kilowatts.

Watts are a measurement of voltage time current (volts x amps). Your voltage is fixed, 240 volts. The amps are the variable. Every time you turn on a 60 watt light bulb, you draw about a half an amp.

Think of your water system. You have a fixed amount of water pressure at each faucet provided by the water department. If all the faucets are turned off, no water flows and the water meter does not turn. When you turn on a faucet, water flows and the meter turns. The harder you turn on the faucet, the faster the meter turns. Turn on more faucets and the meter turns even faster.

Amps are measure of electrical current. When every thing in the house is turned off, no electrical current flows, no amps. Therefore the watt meter does not turn. Every thing in your house that consumes electricity is a load. A 60 watt light bulb is a small load. A typical big screen TV draws about 300 watts or about 2.5 amps. If you have an electric water heater, it will draw about 5500 watts or about 22 amps at 240 volts. An electric stove draws about twice as much, and electric house heater or AC draws a lot more.

The size of the service determines the maximum amount of amps you can draw from the system at any given time. Its like the main water line coming into your house determines the maximum amount of water that can flow into your house at a given time. Going from a 100 amp service to a 200 amp service for your power would be like going from a 1" main water line to a 1.5 inch line.

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