A breaker has to be 250% of the motors full load amps.
Depends on what size wire was used in that circuit. AWG #10 wire requires the use of a 30 amp breaker AWG #12 wire requires the use of a 20 amp breaker AWG #14 wire requires the use of a 15 amp breaker Check the wire size in the circuit and you will know what size breaker to use. It is not going to be a 25 amp breaker.
AWG #10 copper on a 30 amp breaker.
Provided you use wire that is rated for 20 amps.
Yes you can use a 60 amp breaker to feed a 100 amp sub panel. The wire from the 60 amp breaker must be #6 or larger. You will not be able to draw the maximum 100 amps from the panel you will be limited to 60 amps.
Breaker sizing is dependant on what the load amperage is that the breaker is connected to. If the amperage is not given but just the wattage, use this equation I = W/E. Amps = Watts/Volts. This air conditioner unit should be on a dedicated circuit receptacle. On these types of loads the conductor can only be loaded to 80% of the conductors rating. So a 15 amp breaker times 80% = 12 amps or Watts = Amps x Volts, 12 x 120 = 1440 watts. A 20 amp breaker times 80% = 16 amps or Watts = Amps x Volts, 16 x 120 = 1920. Once the breaker is sized remember to use the correct wire size to correspond with the amperage of the breaker.
To answer this question a voltage must be given. Watts = Amps x Volts. <<>> Answer At 115 volts ac, 30 amps equals 3,450 watts.
About 33 amps use a 40 amp breaker.
The recommended breaker for dryers is 30 amps. If you want to do the calculation to see if a 25 amp breaker will work use the following formula. W = A x V, A = W/V. Find the wattage of the unit and divide it by 240 volts to get the amperage. If the amperage is under 25 amps then the breaker will work. If the amperage is over 25 amps then a 30 amp breaker on #10 wire will be needed.
You can have a total of 3600 watts. NEC requires you to use only 75% of circuit breaker, therefore on a 20 amp breaker you can use up to 15 amps.
Yes, as long as the rating of the breaker is high enough. Do not use a 20 amp breaker with 14 ga wire however. 14 ga wire can not have a breaker ratered high than 15 amps serving it.
You can as long as the feeder wire to the stove is a #6 which is rated for 60 amps. You must keep in mind that the breaker protects the wire size. If your stove is now connected with a #8 which is rated for 40 amps you can not use a 60 amp breaker on the circuit for the above reason.
Yes, you can use a 40 amp breaker to feed a sub panel. The wire from the 40 amp breaker must be #8 or larger. If you intend to use the full 40 amps a larger conductor must be used. Conductors can only be loaded to 80% capacity in continuous load conditions. A #8 wire is rated at 45 amps x 80% = 36 amps. The suggested size would be a #6 rated at 65 amps x 80% = 52 amps.
No, it is not safe to use a #8 conductor on a 50 amp breaker. A #8 conductor is only rated at 45 amps capacity. By connecting it to a 50 amp breaker, which would trip at 50 amps on an overload, would overload the conductor by an extra 5 amps. This would be a conflict against the electrical code.
You can install as many breakers in the 100 amp panel as it is designed to take. If it is a 16 circuit panel you can fill it up with as many different combinations as you like. The reasoning behind this is the panel board is designed to to take a 100 amp main breaker. All of the buss bars in the panel are designed to have a capacity of 100 amps. No matter which breakers you use, when the capacity of 100 amps is reached the main breaker will trip. To see if your panel is big enough total up your appliances. Range 40 amps, dryer 30 amps, hot water tank 20 amps. If all of these devices were on at the same time they total 90 amps. This leaves you 10 amps for the rest of the house. Plug in a toaster and the main breaker will trip. The average use in the home at any one time is about 50 to 60 amps.
No the breaker will trip beause the circuits maximum current allowed by the breaker is 15 amps.
Yes, a #8 wire is rated at 45 amps. One of the duties of a breaker is to protect the wire from over current. A 30 amp breaker will trip before reaching 45 amps so the wire will never get close to its rating.
Ovens typically run at 240 volts which will be a two pole breaker in your panel. Watts = volts x amps. 4800 / 240 = 20 amps. If by chance you are using 120 volts then double it to 40 amps. All wiring must conform to size of breaker used.
Assuming 240 volt supply, use 7 amps per HP which gives a current of 35 amps. The wire must be rated at 125% of the current, which is 44 amps. That requires 4 AWG cable or 16 mm2. Use a 60 A breaker.
No a #12 wire is only rated for 20 amps. The 40 amp breaker will not protect the #12 wire. A 40 amp breaker should have a #8 wire connected to it which is rated at 45 amps. The only time that a breaker is allowed to be bigger that the wire size rating according to the electrical code is when a motor is connected to the breaker. This is to stop the 300 percent inrush of the motor full load amps from nuisance tripping a smaller sized breaker.
The average US home uses 110 volt for most home electronics and light and 220 volt for many appliances. Each breaker in the breaker box can support up to 10 or 20 amps, depending on the rating of the individual breaker. Do NOT replace a breaker with a higher rated breaker! It can start a fire.
No, it is only used for 15 Amps at 240 Volts. If you need 30 Amps at 240 Volts, use a 30 amp double pole breaker.
A #12 copper conductor with an insulation factor of 90 degrees C is rated at 20 amps. A #14 conductor can not be connected to a 20 amp breaker as that conductor is only rated at 15 amps.
If the 12,000 BTU A/C only requires 20 amps to run then yes you can use the same 12 gauge wire but you cannot change it to a 15 amp breaker. You will need to install a 20 amp double pole breaker. If it requires more than 20 amps you will have to replace the wiring and breaker.
It may not damage the dryer. But....if the dryer tries to use more than 20 amps, or if anything else is connected to the breaker totaling MORE than 20 amps, the breaker will pop. The breaker disconnects (throws, pops, etc.) if there is too much current being drawn. Too many light bulbs, heaters, stoves, etc. This is designed as a safety so that wires don't melt, fires start and so on. Consult the manufacturer to see if is OK. Or at least look at the label on back to see how many amps it uses. If it's even close to 20 amps, it might be good to have an electrician see about upgrading the breaker/ wiring.
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