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What happens when you plug a 30 amp appliance into a 50 amp breaker?
Wiki User
∙ 12y ago
The appliance works perfectly. If you did it the other way around (50amps on a 30amp breaker, you would be tripping the breaker.
Think of it as a Mercury thermometer. The circuit breaker is the maximum temperature and the load on that breaker is the mercury. If the load is lower than the max, everything works beautifully. If the load becomes greater than the maximum rating, then things starting popping.
Wiki User
∙ 12y ago
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How do I know if I have a 30 amp breaker at my house to plug a trailer into?
If it is a 30 amp breaker then it is a 240 volt outlet.
What amp circuit breaker should be used for a 120v 2.5 amp appliance?
If the appliance is just to be plugged into a circuit with multiple outlets then you just need to make sure that the sum of currents for all devices on the circuit are less than the rated current. A rule of thumb is total current should be no greater than 80% of the rated current. So you might have a 20 A breaker and several 2.5 A appliances on this circuit. If you have a dedicated circuit for the appliance you would only need to size the breaker for the maximum current being drawn by the appliance. If the appliance contained a motor then there might be a start-up current that might be as high as 15 amps so you would likely go to a 20 amp breaker for a safety margin. As a practical matter a dedicated circuit for an appliance in the 2.5 amp range should have a 15 amp breaker. I always install a 20 amp breaker just for added margin and possible future applications.
Is there a adapter for a nema 14-30 plug and a nema 14-50 receptacle?
No there are no adapters made for these types of installations. The reason there are no adapters is to provide a factor of safety. To plug a 30 amp plug into a 50 amp receptacle could allow 50 amps to be applied to a 30 amp rated cord. The 50 amp receptacle is more than likely being fed by a 40 amp breaker. Just change the plug cord to match the ampacity of the breaker ahead of the 50 amp receptacle. Or change the 50 amp receptacle and 40 amp breaker to a 30 amp breaker and use your existing cord plug.
What type of appliance would be use a two pole 50 amp breaker?
In North America this size breaker could be used on a welding machine. A range in the home would use a 40 amp two pole breaker.
Can you use 15 amp appliance on 20 amp socket?
Yes, the amp rating is a measurement of the highest amp load it should carry. So a 15 amp appliance will work on a 20 amp socket but you wouldn't want to use a 20 amp appliance on a 15 amp socket.
Can you use a fifty amp circuit breaker for a forty amp appliance?
Yes.
How do I know if I have a 30 amp breaker at my house to plug a trailer into?
If it is a 30 amp breaker then it is a 240 volt outlet.
What amp circuit breaker should be used for a 120v 2.5 amp appliance?
If the appliance is just to be plugged into a circuit with multiple outlets then you just need to make sure that the sum of currents for all devices on the circuit are less than the rated current. A rule of thumb is total current should be no greater than 80% of the rated current. So you might have a 20 A breaker and several 2.5 A appliances on this circuit. If you have a dedicated circuit for the appliance you would only need to size the breaker for the maximum current being drawn by the appliance. If the appliance contained a motor then there might be a start-up current that might be as high as 15 amps so you would likely go to a 20 amp breaker for a safety margin. As a practical matter a dedicated circuit for an appliance in the 2.5 amp range should have a 15 amp breaker. I always install a 20 amp breaker just for added margin and possible future applications.
Is there a adapter for a nema 14-30 plug and a nema 14-50 receptacle?
No there are no adapters made for these types of installations. The reason there are no adapters is to provide a factor of safety. To plug a 30 amp plug into a 50 amp receptacle could allow 50 amps to be applied to a 30 amp rated cord. The 50 amp receptacle is more than likely being fed by a 40 amp breaker. Just change the plug cord to match the ampacity of the breaker ahead of the 50 amp receptacle. Or change the 50 amp receptacle and 40 amp breaker to a 30 amp breaker and use your existing cord plug.
What type of appliance would be use a two pole 50 amp breaker?
In North America this size breaker could be used on a welding machine. A range in the home would use a 40 amp two pole breaker.
Can you use 15 amp appliance on 20 amp socket?
Yes, the amp rating is a measurement of the highest amp load it should carry. So a 15 amp appliance will work on a 20 amp socket but you wouldn't want to use a 20 amp appliance on a 15 amp socket.
Can you replace your current cooker fuse 30 amp with a 40 amp circuit breaker?
A 30 amp breaker is designed to trip at an earlier point than a larger 40 amp breaker so one appliance that operates on lower amperage level could be unsafe or damaged before it could trip the higher 40 amp breaker. Also, the existing wiring may not be rated for 40 amp service.
Can you plug a 20 amp heater into a 30 amp plug?
Yes. If it has a motor, there may be an additional surge when the motor starts up, as long as the result doesn't exceed 20 amps, your circuit breaker should not complain. This leaves you with enough 'headroom' to supply another 5 amps before blowing your circuit breaker. Electricity is an expensive way to heat a space, unless you're getting very good rates so be prepared for an alarming bill at the end of the month if you use the space heater very often.
Can you plug in up to 4400 watts appliance to a 20 amperes breaker?
A 20-amp supply can be used for a 4400 watt appliance provided the voltage is 220 v or more, and the appliance is designed for the same supply votage, and the power factor is 1. On a 240 v supply the power factor must exceed 0.92.
How can you plug 2000 watts 240v into a 120v 20 amp breaker with out replacing your breaker and all the plugs on the line?
You can't.
Can you use an 18 amp appliance on a 20 amp circuit?
Yes, if properly wired a 20 amp circuit is a great circuit for an 18 amp appliance. Properly wired means you've used 12 gauge wire or larger and the circuit is protected by a 20 amp breaker or fuse and all connections are secure.
Can you have a 15 amp appliance on a 32 amp supply?
Yes, providing the phase is the same. but you can't do the other way around, or breaker will immediately pop, or fuse will blow.
