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The equation for amperage is I = W/E, Amps = Watts/Volts. The amperage for the furnace would be, Amps = 15000/240 = 62.5 amps. So to answer the question, yes a 100 amp breaker with a #4 copper conductor will be sufficient to operate a 15 kW furnace. A 70 amp breaker will work but it is cutting the edge a bit too fine as you don't need the furnace to trip off during the winter months (northern hemisphere) if you are away from your home for an extended period of time.
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What is the difference between a 100 amp breaker box and a 125 breaker box?
The amperage capacity of the main bus bars and the connection of the main breaker to the bus bars.
Will turning off the main breaker turn off all the power to the circuit breaker box?
No. Power to all the circuit breakers will be cut off except for the Main power breaker. The Main power breaker (which supplies power to all other breakers and will say 100, or whatever your max breaker box power is, on it )will have power going to it all the time, unless power is turned off outside the house.
Can you downgrade from a 125amp main breaker to 100 amp breaker using the same box?
You can reduce the breaker size because that limits the current that can reach the main panel. There is no safety issue other than the significant danger in an unskilled person changing out a main breaker.
What size Aluminum wire is used for ground in breaker box?
For a 100 Amp breaker panel it would be 2 AWG. For 150 Amps it would require 2/0 (2 ought) aluminum wire.
Is it ok to change a breaker box in a house from 2 fuses at 50amps to one at 50 and one at 35 amps?
Breaker boxes do not have fuses associated with them unless the main disconnect is independent from the breaker box. If that is the case both fuses have to be the same in the main disconnect that protects the breaker box.
Could fuse be out to cause furnace not to go on?
Yes, a blown fuse can cause your furnace to not turn on. Check the breaker box and see if any of them have tripped.
Why does your breaker box buzz when your furnace comes on?
Tss Cause there's a bunch of bee's in there or sumthin Tss
What is the difference between a 100 amp breaker box and a 125 breaker box?
The amperage capacity of the main bus bars and the connection of the main breaker to the bus bars.
What is the distance needed around a electrical breaker box?
100
Is it unsafe to have 60A service going into a new electrical box designed for 100A?
Its not recommended because your new main breaker will allow up to 100 amps and your old wire can only safely handle 60amps. If you put a 60amp main breaker in the new box, that would be acceptable. No, it is perfectly safe. Because the box is overrated, there is no problem. If the box is the main panel, and not a subpanel, install a 60A main breaker so you cannot overload your service. If it is a subpanel this 60A breaker should be in the main panel.
If you have a 200A Meter Main Combo do you need a main 200A breaker in the panel?
When I went to a 100 amp service I could not find a 100 amp. breaker in stock. I used a 60 amp. breaker and have never blown it. The 200 amp you are using can handle up to 200 amps, but if you use a smaller breaker it will only handle up to that amperage. The 200 amp is usally the total amperage of all the breakers comming out of the box. You will probably never come anywhere near using 200 amps at one time.
Can you use a 100 instead 20 to change breakers?
To replace breakers in an electrical box it is extremely important the replace the breaker with the same wattage. Do not replace a 100 breaker with a 20 breaker is can cause damage.
What should I do if my heater does not work after power outage?
I'm not sure why your furnace would shut off after a power outage but first check your breaker in the breaker box to make sure it is in the on position. If this is not the problem remove the cover on furnace and look for a red reset button on the pump. Press this button and hold for a second or two and you furnace should restart. If however it shuts down again you have other problems and will need a furnace repairman.
Where is the ac circuit breaker?
It's in the basement. Turn on the light switch behind the dryer, walk past the furnace, stay to the left of the water heater, and you'll eventually see the breaker box on the wall in front of you. For heaven's sake, do be careful.
Where is the headlight circuit breaker?
In the breaker box
Why is the power off on on breaker when it is not flipped off?
Turning the breaker on allows the power to flow through to the outlets, lights, and appliances on that circuit, so yes power goes to and through a turned on breaker. If the breaker is off, but the main power is on, power still get to the breaker, usually from the bus bar that runs down the middle of the back of the breaker box.
What is wrong when you switch from fan to air conditioner and it shuts the breaker in the electricity box?
You're actually OPENING the breaker. And it means you're drawing too much power. 1 air conditioner=about 10 box fans. Try unplugging things using the same circuit. An air conditioner draws a lot of juice. An A/C and a microwave, for example, are too much for most homes to handle. Your breaker box should (hopefully) tell you what breaker goes where.
