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Why does my heating and air conditioner in my house have 3 double pole breakers - a 30 40 and 50?
In North America a two pole breaker usually represents a load that requires a 240 volt source. Larger current load appliances use 240 volts to reduce the feeder size and there by reduces the cost factor when wiring a building. Two pole 15 amp breakers are used for kitchen counter split receptacles.Two pole 20 amp breakers can be used for baseboard heating and hot water tanks.Two pole 30 amp breakers can be used for clothes dryers and some heating units.Two pole 40 amp breakers can be used for electric ranges.Two pole 50 amp breakers are not common in home wiring circuits. It might be used for an electric furnace or some other high current device.
What is the difference between a 30 amp and a 40 amp breaker?
A 30 amp breaker is designed to handle a maximum continuous load of 30 amps, while a 40 amp breaker can handle a maximum continuous load of 40 amps. The 40 amp breaker allows for more current to flow through before tripping, making it suitable for higher power requirements compared to the 30 amp breaker. Always consult with a qualified electrician before adjusting or replacing circuit breakers to ensure safety and compliance with electrical codes.
What size breaker do I need on the main panel to run a 2-60 amp breakers and 2-40 amp breakers on a sub panel?
You need to calculate how much the total current is likely to be at any moment. It's probable that the total load will be less than the sum of the individual breakers, 200 amps, but how much less depends on local conditions.
Can you use 6-3 NM wire and 50 amp breakers and 50 amp range cord for a 40 amp max load range?
You can if you have the existing materials. If you want to keep your costs down the same installation can be installed with the following materials. For wire all that is needed is 3C #8 wire. For the breaker a two pole 40 amp will work. You will need a 4 11/16" square box to install the range receptacle into.
Is it ok to exchange a 20 amp breaker with a 40 amp breaker?
No. The 20 amp breaker is probably protecting a #12 wire. Connecting a 40 amp breaker to the 20 amp #12 wire would seriously overload the #12 wire. This means that if the load increased to a full 40 amps the insulation on the smaller size wire would most likely melt off and the wire could short out.
Why does my heating and air conditioner in my house have 3 double pole breakers - a 30 40 and 50?
In North America a two pole breaker usually represents a load that requires a 240 volt source. Larger current load appliances use 240 volts to reduce the feeder size and there by reduces the cost factor when wiring a building. Two pole 15 amp breakers are used for kitchen counter split receptacles.Two pole 20 amp breakers can be used for baseboard heating and hot water tanks.Two pole 30 amp breakers can be used for clothes dryers and some heating units.Two pole 40 amp breakers can be used for electric ranges.Two pole 50 amp breakers are not common in home wiring circuits. It might be used for an electric furnace or some other high current device.
What kind of breakers are used in Heating and AC?
Can be 30, 40, or 50 Amp 240 volt double pole depending on the HVAC specs.
Can a 100 amp sub main handle a 27 KW Electric water heater wired to 3 40 amp breakers?
You need to say what voltage the heater is running on (it's different in different countries).
What is the difference between a 30 amp and a 40 amp breaker?
A 30 amp breaker is designed to handle a maximum continuous load of 30 amps, while a 40 amp breaker can handle a maximum continuous load of 40 amps. The 40 amp breaker allows for more current to flow through before tripping, making it suitable for higher power requirements compared to the 30 amp breaker. Always consult with a qualified electrician before adjusting or replacing circuit breakers to ensure safety and compliance with electrical codes.
Can you wire a 40 amp range to a 100 amp box if you are already about at 60 amps?
Yes, you can, you just can't have 100 amps running through the box at one time. For instance, I have a 450 amp box in my house, but all the breakers add up to 900.
What size breaker do I need on the main panel to run a 2-60 amp breakers and 2-40 amp breakers on a sub panel?
You need to calculate how much the total current is likely to be at any moment. It's probable that the total load will be less than the sum of the individual breakers, 200 amps, but how much less depends on local conditions.
Can you use 6-3 NM wire and 50 amp breakers and 50 amp range cord for a 40 amp max load range?
You can if you have the existing materials. If you want to keep your costs down the same installation can be installed with the following materials. For wire all that is needed is 3C #8 wire. For the breaker a two pole 40 amp will work. You will need a 4 11/16" square box to install the range receptacle into.
Is it ok to exchange a 20 amp breaker with a 40 amp breaker?
No. The 20 amp breaker is probably protecting a #12 wire. Connecting a 40 amp breaker to the 20 amp #12 wire would seriously overload the #12 wire. This means that if the load increased to a full 40 amps the insulation on the smaller size wire would most likely melt off and the wire could short out.
Do they make a 30-40 amp two pole breaker compatible with a square d breaker?
No, if you have a Square D distribution panel only Square D breakers will fit in it.
Can a 40 amp breaker not a 4 amp breaker be used to replace a 35 amp breaker for ac unit?
No, it is not recommended to replace a 35 amp breaker with a 40 amp breaker for an AC unit. Breakers are designed to protect the circuit and the equipment, so using a higher rated breaker can lead to overheating and potential damage. It is best to use the correct amperage rated breaker for the equipment.
How many 20 amp double pole breakers can go into a 100 amp panel?
The provisioning of the breakers in a panel has a physical limitation regarding how many breakers will fit and a load calculation based on what devices the panel has to support. Your question really applies to both types of breakers. There are rules of thumb for sizing and populating the panel. This information is in the National Electric Code. If you have an existing panel and a new application requiring additional breakers for 220 Volt applications, the current draw in panel can be measured by an electrician and you will know what additional load you can support. If breakers fit physically in the panel, but connected devices exceed the total current capacity you will trip the main panel breaker. At this point you would need to get an electrician involved.
If you have two central air systems outside - a 25 amp heat pump and a 40 amp max electric for the main floor - why do the 80 amp dbl poll breakers on the main box throw when temps reach the 90s?
Check to ensure the connections are tight at the breaker box and the disconnect boxes. It could be that you simply have a loose connection. I have seen this occur from time to time and you may have answered your own question.When the temperature rises the breakers also heat up because of this,especially if the breaker panel is in the sun all day.If the breakers have some age on them try replacing them and checking the amp draw.
