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The only way is to use a meter, it does not have to be expensive. Radio Shack offers inexpensive meters. Simply "clamp" the meter around the circuit you want to test.

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What size breaker do you need for a well pump?

A breaker is based on the amperage that is drawn by the pump motor load. Find the full load amperage of the motor. The wire fed from the breaker has to be rated at 125% of the motors full load amperage. The breaker for motors have to be over sized, usually 250% of the motors full load amps.


Can you use a 30 amp breaker for a stove?

It is not recommended to use a 30 amp breaker for a stove as most stoves require a 40 or 50 amp breaker to operate safely. Using a lower amp breaker can cause the breaker to trip frequently and may not provide enough power for the stove to function properly. It is important to follow the manufacturer's guidelines for the correct amperage breaker for your specific stove.


How many amps will a 3 phase 480 volt 4kw heater draw?

To calculate the amperage drawn by the heater, you can use the formula: Amperage (A) = Power (W) / (Voltage (V) * Square root of 3). In this case, the amperage drawn will be approximately 5.8 Amps.


Will a 100 amp breaker box work if there are 5 220 amp breakers and 7 110 breakers?

No, a 100 amp breaker box will not be sufficient for that configuration. The total amperage of the breakers exceeds the capacity of the main breaker. You would need a larger breaker box with a higher amperage rating to accommodate those breakers.


Can circuit breakers help to prevent building fires?

Breakers limit the current on the conductor to a safe level, too many appliances plugged in. You trip a breaker, hopefully you then transfer load to another circuit. Breakers use two different methods to accomplish this, one uses a bimetallic strip and the current passes directly through, too high a current causes the strip to deflect. It acts on a mechanism much like the sear in a guns trigger, the deflection pulls the trigger causing a spring to open the contacts and turn off the circuit. Another type is thermal magnetic, current passing through the breaker causes a magnetic field to act on a coil tripping the breaker. When breakers are wired and work properly they prevent fires!Bending metal opens a switch

Related Questions

Purpose of a breaker in an electrical circuit?

Breakers ensure that when too much amperage is being drawn through the circuit the power is shut off. Excessive amperage creates heat. Without a breaker that heat buildup could lead to fire.


What size breaker do you need for a well pump?

A breaker is based on the amperage that is drawn by the pump motor load. Find the full load amperage of the motor. The wire fed from the breaker has to be rated at 125% of the motors full load amperage. The breaker for motors have to be over sized, usually 250% of the motors full load amps.


What is the Function of circuit breaker?

The purpose of a circuit breaker is to open the circuit in the event of an overload. Wires/conductors are only rated for a specific Amperage. If this amperage is exceeded the conductor/wire begins to heat up and given enough time it becomes a fire hazard. For instance a 15 amp breaker will trip once the Amps drawn through that circuit exceed 15 amps. The short answer is to keep you safe.


What is a function of a circuit breaker?

The purpose of a circuit breaker is to open the circuit in the event of an overload. Wires/conductors are only rated for a specific Amperage. If this amperage is exceeded the conductor/wire begins to heat up and given enough time it becomes a fire hazard. For instance a 15 amp breaker will trip once the Amps drawn through that circuit exceed 15 amps. The short answer is to keep you safe.


What is the function of the breaker?

The purpose of a circuit breaker is to open the circuit in the event of an overload. Wires/conductors are only rated for a specific Amperage. If this amperage is exceeded the conductor/wire begins to heat up and given enough time it becomes a fire hazard. For instance a 15 amp breaker will trip once the Amps drawn through that circuit exceed 15 amps. The short answer is to keep you safe.


What amp breaker do you need for a 325 watt heater 120 VAC?

Electrical breakers are sized by the conductor that is connected to it. The conductor is sized by the current that is drawn by the circuit. The formula for amperage is I = W/E. Amps + Watts/Volts. 325/120 = 2.7 amps. A #14 copper conductor is rated at 15 amps. This is the minimum size wiring that is used for house circuits loads. The breaker for this size wiring will be a 15 amp breaker.


Can you use a 30 amp breaker for a stove?

It is not recommended to use a 30 amp breaker for a stove as most stoves require a 40 or 50 amp breaker to operate safely. Using a lower amp breaker can cause the breaker to trip frequently and may not provide enough power for the stove to function properly. It is important to follow the manufacturer's guidelines for the correct amperage breaker for your specific stove.


How many amps will a 3 phase 480 volt 4kw heater draw?

To calculate the amperage drawn by the heater, you can use the formula: Amperage (A) = Power (W) / (Voltage (V) * Square root of 3). In this case, the amperage drawn will be approximately 5.8 Amps.


Function of a breaker?

The purpose of a circuit breaker is to open the circuit in the event of an overload. Wires/conductors are only rated for a specific Amperage. If this amperage is exceeded the conductor/wire begins to heat up and given enough time it becomes a fire hazard. For instance a 15 amp breaker will trip once the Amps drawn through that circuit exceed 15 amps. The short answer is to keep you safe.


How much amperage is drawn by a kiloWatt motor?

To answer this question the motor voltage is needed.


What is a typical rated amperage for an electrical range?

In North America a 40 amp breaker is used on 240 volts. W = A x V = 40 x 240 = 9600 watts. That is the maximum that can be drawn from the circuit but usually only one or two burners or the oven are ever used at one time reducing the wattage load. On the back of the range there is a nameplate with all of the specification of your unit.


What is air circuit?

You may be referring to an air circuit breaker or, more accurately, and air-blast circuit breaker. This is a type of high-voltage circuit breaker in which the electrical arc, drawn when it opens, is stretched and snapped by a blast of air directed between the separating contacts -so the air is used as a method of extinguishing the arc. Often, these breaker's mechanisms are also driven by compressed air.