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Yes. Five 20 amp breakers would be 100 amps. It doesn't work that way. The load placed on this box at any given time cannot exceed 100 amps. You can put as many breakers as it will hold.
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It's alwas better to install the 200 amp then the 100.You may not need the 200 right now , but down the line should you deceid to change it would cost you more.
If the service panel you have 100A service can you install a 100A circuit breaker in the original panel to feed another 100A add-on panel?
DO NOT FOLLOW THE INSTRUCTIONS BELOW! According to this logic, one could chain an infinite number or sub-panels off of a single one hundred amp feed. The second law of thermo…dynamics prevents this. An hundred amp service is not capable of powering another hundred amp service unless you are trying to move your panel and all of the circuits it feeds as well, without adding another hundred amp load. NEC (National Electrcial Code NFPA Book 72) states that certain loads can be derated but not to this extent. As far as the voltage drop is concerned, you need only worry about this with runs of about two hundred and twenty five feet or more for a 200 Amp Service running 2/0 2/0 4/0 URD direct burial aluminum. What you need is a new 200 Amp service to feed your original 100A panel and another hundred amps to feed your new load. for USA, Canada and countries running a 60 Hertz supply service. Yes you can as long as the feeder to the other 100 amp panel is equal to the ampacity of the breaker. In this case you would need to use a #3 wire rated at 90 degrees C if the distance to the other panel is under 50 feet. If the distance is longer that this a voltage drop calculation would have to be added to increase the wire size. My experience would lead me to believe that you could not install a breaker that was greater to or equal to the rating of the main breaker. To add a sub-panel, you will need to install a breaker that is half or lower than the main breaker. In your case, you have a 100A service; you will need to install a 50A or smaller breaker to service the sub panel. Consult an electrician if in doubt. If you have any doubts about an answer that you get, check the answerer's bio by clicking on their name to check their qualifications. Before you do any work yourself, on electrical circuits, equipment or appliances, always use a test meter to ensure the circuit is, in fact, de-energized IF YOU ARE NOT REALLY SURE YOU CAN DO THIS JOB SAFELY AND COMPETENTLY REFER THIS WORK TO QUALIFIED PROFESSIONALS.
How do you upgrade the service from a 120V 100A circuit breaker to 240V 30A for appliances like ovens and dryers?
Have an electrician wire you a proper line for the appliance. You were just kidding about the 100A, right? 10, or 20amp, not 100.
No it does not mean you have a 200 amp service. you should / could possibly have a "main" breaker. That breaker size is your service size.
Answer It depends on a number of factors. The size of the service wires, the meter rating, the main breaker panel rating, etc. will have to be rated for th…e amperage you want to go up to.
Answer . \n4 gauge AWG copper minimum.. Answer . Use this: \nhttp://www.electrician.com/vd_calculator.html \nI found this invaluable when wiring our outbuildings.\n. \…nThis one puts out the wire size: \nhttp://www.alternate-energy.net/voltlosscalc03.html
Answer 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.
Are there 100A available on both bars of a 100A panel in a home and for instance can you draw 75A on each bar?
Answer The amp rating of a panel is based on the size of materials used (the bars, etc). You can pull 400 amps through your panel (provided a 400amp breake…r was in place); but it would probably melt down very quickly. Basically you have 100 amps total to play with: be it from two 50amp breakers or 30 subpanels pulling 3 amps. :D You just can't pull more than 100amps at one time or the main will trip. Answer The 100 amps is a rating for each bar. If your panel has a 100 amp double pole breaker, then you can use up to 100 amps on each pole. You really shouldn't draw more than 80 amps continuously. But you can count on having that 160 amps avilable if all your loads use only one hot leg of the panel (120 volt loads instead of 240).
If the overall main fuse box has two 100A cartridges in it does that mean the amp service is 100A or is it 200A and what is the 'hydro meter'?
Answer for USA, Canada and countries running a 60 Hz power supply service.(LIFE SAFETY WARNING! [disclaimer] Electricity is dangerous! You can be injured or killed! Impr…oper installations can cause fire, injury and death!) The fuse or over-current device in the service entrance equipment which limits current flow is the determining factor in the service's rating [assuming that the over-current protection is properly sized for the conductors used!] Therefore, if the main fuses are 100 Amp, it is a 100 Amp service, even if it has 3 fuses. The exception to this is a service having more than one disconnect [allowed under the six-disconnect rule], wherein you might have a 100 Amp service with the largest fuse or breaker being 60 Amps! ... or two 100 Amp panels fed with a 200Amp cable - is it a 100 Amp or 200 Amp service? Barring seeing a picture or being there physically, my guess is that you have a 100-amp service. I can only guess what the "hydro meter" is. Is there more than one meter? It could be that the "hydro meter" is the off-peak service meter for your water heater power! [In the Philadelphia area, PECo has historically provided the option to have some loads powered through a second meter at a reduced rate, controlled by a clock or other means, which is shut off during peak demand hours.] As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed. Before you do any work yourself, on electrical circuits, equipment or appliances, always use a test meter to ensure the circuit is, in fact, de-energized. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS WORK SAFELY AND COMPETENTLY REFER THIS WORK TO QUALIFIED PROFESSIONALS.
As many as there are spaces for. The physical amount of breakers that can be added to a load-center or for that matter an electrical panel is governed by the amount of slots …that are available. This holds true no matter what the amp capacity of the unit is. What you don't want to do is, turn on more than 100amp worth of circuits at the same time! In other words if you have 200 circuits all hooked to the same 100amp box, all rated at 10amps each, you can only turn on 10 circuits at the same time without blowing the 100amp circuit breaker.
When did builders start installing 100A service with breakers in new constructions in Minneapolis Minnesota?
Answer I don't know anything about Minneapolis except that it's cold, but anything under 100 Amps is normally inadequate for an average home. Therefore, t…he service you mention is the bare minimum required for a home of less than 2,000 sf leaving little room for future consumption and the possibility of costs for upgrading to a larger service.
Answer number six wire is good for sixty amps max Added by maintain... First, I am assuming that you are not an electrici…an. Second, I would suggest that you check with your local building official, it sounds like you may need a permit. Third, #6 THHN conductors will work under optimal conditions. However, there may need to be some deration factors applied. THHN may not work if the conductors are exposed to light, are installed in wet locations or other situations. It is best to check with a qualified electrician or local building official before you invest time and money on a project that will not work the way you want. Best of luck! Terry
Answer It can be $600 to $1000 however this can depend on whether your existing wire is in order. Older wiring can be tricky, you may need a new ground tap, junc…tion boxes for wiring that won't reach the new box and a new meter on the outside of the house, and if it is to be inspected it could be app. $400 more. Some electricians don't and won't pull permits. That savings should be passed on to you. Check their licenses and get references. It's not a big job in the realm of electricians work, so unless there's some strange wiring problem, get several estimates.
The minimum size grounding conductor for a 100 amp service is a #8 bare copper wire.
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 undoub…tedly 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.