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As many as you want without exceeding the 100amps. You could have 100 circuits if all you have is a single 100watt light on each circuit.

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Q: How many circuits can you have with 100A service?
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Related questions

Did one leg of your 1950's 100A main breaker fry because it was overloaded by too many dedicated circuits?

You answered your own question. Call a pro, your life could depend on it!


How many circuits can you have off a 200 amp service?

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How do you upgrade the service from a 120V 100A circuit breaker to 240V 30A for appliances like ovens and dryers?

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Considering 100A 240V service has 2 poles at 100A each is the total usable power actually 200A at 120V?

No, amperage is not additive, but a constant. Think of power as water, its always the same temperature, hot (amps). The pressure is variable (volts). The true answer is undoubtedly more complex, but you get the point. If you need to draw 200 amps you would actually need a 400 amp service because code states you cannot have more than an 80% load on a breaker That's an interesting question and I had to run the theory through my brain a few times to confirm my answer. The answer is if you have a 100A 240V service, you could draw what appears to be 200A from that panel at 120V. If you install 100A 120V single pole breakers on each side of the panel (in reality this would be many breakers but let's keep it simple) then both breakers will operate just fine, giving the appearance of 200A. In reality, however, one breaker actually feeds through to the other breaker. The neutral only carries the unbalanced load so in this hypothetical situation the neutral at the panel carries 0A. So the answer to the question is...if you install ONLY 120v single pole breakers, you can run up to 200A on those circuits (or 80% of that as we have discussed.) But you are only running 100A on each leg of the service conductors and breaker.


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How many 20 amp circuits can you run on a 50 amp service?

In the United States, there isn't a hard limit on how many 20 amp circuits that can be run on a 50 amp supply. This is because in most cases, especially in homes, we don't load most circuits with more than an amp or 2, even when they are protected by a 20 amp breaker. From a practical perspective you probably have a limited number of slots for breakers in your service or supply panel.


Full form of IC?

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The US is broken up into how many federal circuits?

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Who made the Revelation Model 100A?

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parallel circuit - a closed circuit in which the current divides into two or more paths.The circuits in a parallel circuits there are two or more circuits.