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The amperage that can be used from a service distribution panel is governed by the amperage of the main breaker. If the main breaker is 200 amps then up to a maximum of 200 amps can be taken from the panel before the main breaker trips on an over current fault.
ANSWERBreaker panels come in a variety of sizes. The current capacity of the breaker panel and its main breaker are governed by the current capacity of the service wiring provided by the electrical supply company. 50 years ago, 60 ampere service was common. Now the smallest common household service in North America is 100 amperes. It is becoming more common to install 150 or 200 ampere service, especially in upscale homes
One "planning ahead" approach is to get 100 ampere service, but install a 200 ampere breaker panel with a 100 ampere main breaker. That way, if you ever upgraded to 200 ampere service, you'd already have the correct panel and wiring, and all you'd have to do is take out the smaller main breaker and replace it with a 200 ampere unit
For business installations, main breaker panels can be considerably larger. For example, consider a typical roadside hotel (50-75 rooms) or small apartment building (15-20 apartments) with HVAC (individual electrical heat and air conditioning units ). You can think of it as a gigantic house, everything that's in your house but on a larger scale. A 1600 ampere 3-phase main breaker would probably be used, with a distribution panel providing 200 ampere single phase breakers to feed power to 200 ampere subpanels throughout the building.
Please read discussion page about the statement in bold print above.
Wiki User
∙ 11y ago
Wiki User
∙ 15y agoThere is a number on the end of each breaker handle. This number represents the maximum amperage handling the breaker will allow before tripping. There is a number on the end of each breaker handle. This number represents the maximum amperage handling the breaker will allow before tripping.
Wiki User
∙ 13y agoThe 30 A breaker you seem to be describing is a 240V breaker. There should be two black wires or perhaps a black and red wire connected to the two screws on the breaker. So the breaker would trip if more than 30A was demanded by the load with 240V across the load. What you have connected to the breaker should be sized such that the total current is no more than 80% of the 30 A.
Wiki User
∙ 13y agoIt is depend on what are the load you are going to use. Add all the loads in Kilo watts and devide it by the supply voltage if it is single phase. If it is three phase devide it by root 3 X supply voltageX.8
Wiki User
∙ 11y agoBreakers will only handle the amperage they were made for. The ones you have in your example are rated at 30 Amps and will trip at 30 Amps.
One can not add 2 breakers together to get a higher amperage rating. It just doesn't work that way.
Wiki User
∙ 10y agoNew, average size 3 bedroom 2 bath homes today will require around 20 breakers. It really depends on if the heat, water heater, cooking, and dryer is gas or electric. If all of them are eclectic it could take 30 breakers or even more. Your electrician can tell you how many breakers will be required for the home you are building.
Wiki User
∙ 14y agoAround 20
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How many outlets and lights on a 60 amp breaker?
120 amps The above answer is wrong. A 60 amp breaker is designed to trip at 60 amps be it a single pole, double pole or a triple pole that is used on three phase equipment. The number on the handle of a breaker is the trip capacity.
What does single pole and double pole mean on a twenty four vault circuit?
i have required lightings amps rating, how many circuit ku how much amps mcb fixing?
How many amps doe it take to trip a 20 amp breaker?
20 amps on the circuit will trip it unless it is is broken. Then it may trip with a lower current or not at all... Any resistance added to the circuit from a bad or dirty connection will add to the total current causing it to trip sooner than expected.
How many amps needed for a 3000 watt 240 volt base board heater?
A 400 watt heater can safely be used on a 15 amp circuit. The size breaker needed for a circuit is determined by the size of the wiring in that circuit. AWG #14 wire requires a 15 amp breaker. AWG # 12 wire requires a 20 amp breaker.
How many amps equal 1 circuit?
80% of the rated circuit. 10 amp circuit is 8 amps, 20 amp circuit is 16 amps, etc.
How many amps would it take to kick a 15 amp breaker with 7 ohms resistance on a 277 volt circuit?
A 15 amp circuit breaker should trip at 15 amps regardless of the load voltages or impedances. If you have 277 volts and 7 ohms, the current would be 39.5 amps and a 15 amp circuit breaker should trip.
What size amp circuit breaker should be used for a geyser?
Depends on how many amps it pulls and the size of the wire in the circuit.
How many outlets and lights on a 60 amp breaker?
120 amps The above answer is wrong. A 60 amp breaker is designed to trip at 60 amps be it a single pole, double pole or a triple pole that is used on three phase equipment. The number on the handle of a breaker is the trip capacity.
What does single pole and double pole mean on a twenty four vault circuit?
i have required lightings amps rating, how many circuit ku how much amps mcb fixing?
What is circuit breaker and its type?
A circuit breaker(s) is what you will find inside your electrical box in your house the idea behind them is when a room in your house draws too many Amps the circuit breaker will turn off all the power to that room to re-engage them you simply switch it back on. There are many types of circuit breakers with different rattings like 15A or 100A, this tells you at what point they will 'break' the circuit and turn off the power.
How many amps doe it take to trip a 20 amp breaker?
20 amps on the circuit will trip it unless it is is broken. Then it may trip with a lower current or not at all... Any resistance added to the circuit from a bad or dirty connection will add to the total current causing it to trip sooner than expected.
How many amps needed for a 3000 watt 240 volt base board heater?
A 400 watt heater can safely be used on a 15 amp circuit. The size breaker needed for a circuit is determined by the size of the wiring in that circuit. AWG #14 wire requires a 15 amp breaker. AWG # 12 wire requires a 20 amp breaker.
How many amps equal 1 circuit?
80% of the rated circuit. 10 amp circuit is 8 amps, 20 amp circuit is 16 amps, etc.
How many watts will a 20 amp douple pole breaker handle?
The formulae for calculating watts to amps is Watts divided by Voltage. Therefore to get from Amps to Watts the calculation is Amps × Voltage. Therefore if you are working on a 240 volt supply the calculation is 20 (Amps) × 240 (Volts) which = 4800 watts.
How many watts can be put on a 20 amp 208 volt circuit breaker?
20-amp breakers can be found for many different voltage levels. The higher-voltage ones tend to be more expensive. A breaker can be used in a circuit of equal or lower voltage than the rated voltage of the breaker.
How many volts can you draw off of a 15amp breaker?
It's the amps that are controlled by the breaker not the volts. You can have a 600 volt 15 amp breaker, you can have a 347 volt 15 amp breaker. The breaker will trip when you exceed 15 AMPS.
Why do you need to know voltage of a breaker?
Breakers and other electrical equipment are rated in voltage so you know what voltage they can withstand. The breaker could fail and start a fire if you apply a higher voltage than it is rated for. Breakers are actually rated in amps (current in excess of this will trip it), interrupting rating (how many amps the breaker can handle during a short circuit) and in volts (is the difference of potential or the pressure that is pushing the current). The breaker I am looking at is rated for 15 amps, 10,000 amps interrupting rating and 120/240 volts.
