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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.
What else can I help you with?
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.
How do you find out how big your main breaker box is?
Simple. Your main electrical panel will have a "main breaker". This will be a two pole breaker, usually at the top of the panel. It will have a number on the breaker "handle" such as 150 or 200. This is the maximum number of amps your panel can supply. Most newer homes, 1975 and newer have a 200 amp service.
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
How do you tell the difference between 100 amp and a 200 amp box?
You can typically determine the amperage of an electrical panel by looking at the main breaker. A 100 amp panel will have a main breaker rated at 100 amps, while a 200 amp panel will have a main breaker rated at 200 amps. Additionally, the size and number of circuit breaker slots can also be indicators of the amperage rating.
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.
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.
What does the range mean on a breaker box?
The range on a breaker box refers to the maximum amount of electrical current that the circuit breaker can handle before it trips and shuts off power to the circuit. It is important to not exceed the range to prevent electrical hazards and damage to the electrical system.
How do you read breaker box amps?
The main breaker will have marking indicating size of electrical service, or if it is a fuse system....the fuses will have current ratings. If it is a subpanel, it might not have a main breaker. In this case you would have to look in the panel that the feed is coming from and find the size of the breaker that is feeding it. In either case you must look for the manufacturer's label that will have the maximum current the panel can handle, make sure the breaker feeding the panel doesn't exceed this rating.
If you have a 100-amp breaker box on the pole with a 100-amp breaker going to your house and you get a hot tub that needs a 60-amp GFI breaker would that overload the box?
That's pushing it but it can work. It depends if you have central A/C, electric range, water heater, etc. Those are your amp suckers. You'll need to be mindful when operating the hot tub; not running the dryer, oven, or other large appliances.
