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How much current does it take to trip a 30 amp automotive circuit breaker?
Wiki User
∙ 9y ago
In a typical US automobile, a 30 amp fuse will sustain a constant load of 360 watts.
Fuses and circuit breakers perform on an "I squared t" rule. For example, a 30 amp fuse will not blow on 31 amps for a very long time. A 20 amp breaker can take anywhere from 10 minutes to two hours to trip on 25 amps. We simply dumb it down so that laymen and technicians need not make mistakes.
Power on seven 100 watt light bulbs simultaneously. That means a circuit suddenly provides 50 amps. 50 amps does not trip a 15 amp or 20 amp breaker, again, due to the "I squared t" rule. A 50 amps load only exists for tens of milliseconds. Not long enough.
A 30 amp continuous appliance will not trip a 30 amp breaker. But a safety margin means limiting 30 amp appliances to 26 amps or less.
Meanwhile, an 18 gauge lamp cord wire typically rated for 10 amps will actually conduct up to 50 amps continuously. Again, that wire is oversized for other safety reasons. And to keep it simple.
These concepts apply to fuses vehicles and structures.
Wiki User
∙ 9y ago
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What is a switch that opens a cuircut when too much current is flowing?
Where I'm from, it's called a "circuit breaker".A circuit breaker.
The role of the circuit breaker is what?
to prevent a circuit from overloading if too much current flow safely interrupt the circuit if it becomes overloaded
How a circuit breaker prevent from too much current flowing into device?
The current (in question) flows through both the circuit AND the circuit breaker [they are in series]. Within the circuit breaker when the current exceeds the preset limit it will open the circuit thus stopping all current flow. There are two common ways of doing this 1) magnetism - a coil pulls a switch open 2) thermal - a bimetallic strip bends away from its contacts, which opens the circuit.
What could stop the flow if there is too much electric current?
circuit breaker or fuse
What protects equipment from too much current by tripping a switch that breaks the circuit and stops the flow of electricity?
Circuit Breaker
What is a switch that opens a cuircut when too much current is flowing?
Where I'm from, it's called a "circuit breaker".A circuit breaker.
How much current will pass through single phase?
The current is limited by the fuse or circuit breaker.
What device used to open a circuit if too much current flows through it?
A circuit breaker is a device used to open a circuit if too much current flows through it.
What is used to insure that too much current does not flow through one circuit?
A circuit breaker or a fuse is used to insure that too much current does not flow through one circuit.
The role of the circuit breaker is what?
to prevent a circuit from overloading if too much current flow safely interrupt the circuit if it becomes overloaded
How a circuit breaker prevent from too much current flowing into device?
The current (in question) flows through both the circuit AND the circuit breaker [they are in series]. Within the circuit breaker when the current exceeds the preset limit it will open the circuit thus stopping all current flow. There are two common ways of doing this 1) magnetism - a coil pulls a switch open 2) thermal - a bimetallic strip bends away from its contacts, which opens the circuit.
What could stop the flow if there is too much electric current?
circuit breaker or fuse
What protects equipment from too much current by tripping a switch that breaks the circuit and stops the flow of electricity?
Circuit Breaker
What a device that protects an electric circuit from too much current?
Circuit Breakers and Fuses limit the amount of current flowing through the circuit.
BMW 325e electric window circuit breaker reset?
Resetting Automotive Circuit BreakersWithout doing a "hands on" troubleshooting of your vehicle no one on this site can tell you specifically, what is causing the problem, or where to find it. It has been my experience that all of the circuit breakers for automotive applications are self resetting.Inside, they use bimetallic strips, and reset themselves when the circuit current overload, or short circuitconditions, has been removed/eliminated, and the bimetallic strip has cooled down.IF your breaker is not resetting itself after a reasonable "cool down" period, then that suggests:A short circuit condition somewhere in that circuit, orAn overload condition due to the addition of too much "extra" electrical equipment [like for example, a "monster" audio amplifier, or a light bar set], orReplacement of an electrical device with one which uses much more current than the replaced device, orA defective circuit breaker.
Circuit breaker trip cause smoke will homeowner insurance pay for it?
A circuit breaker does not "cause" smoke. A circuit breaker "breaks" a circuit when there is too much current, creating a hazardous condition for the wires that are connected to the circuit breaker. The circuit breaker PROTECTS you from electrical fire. Find the source of the smoke; what burned? If a circuit breaker tripped during the incident, it is usually caused by melting/burning wire insulation, either inside or outside of an appliance. If the insulation inside the walls of your house has burned/melted, it could be that the circuit breaker was too large for the wire or that the circuit breaker failed to shut off at the appropriate current load. If the circuit breaker failed, your insurance should help you. If an appliance overloaded the circuit, your insurance should help you. If someone connected an oversized circuit breaker, causing the wire to overheat, your insurance company may refuse to help you.
What could be causing your ir-12 diedrich coffee roaster to blow a breaker in your breaker box?
First, determine the current draw of the coffee roaster, then check the breaker size. Using the formula, Watts = Amps * Volts, determine if the current draw of the coffee roaster is anywhere near the maximum current draw of the breaker. For example, if the roaster is using 14 Amps, and the circuit breaker is rated at 15 amps, that doesn't give much room for anything else on the circuit. Add up all of the current of all devices on the circuit (the one that trips the breaker) and either move things around so that you don't have too much load on a single circuit, or you may need to bring in an electrician to run a new circuit. If you are ABSOLUTELY certain that your appliances are nowhere near the rating of the circuit breaker, you could have a faulty breaker, in which case, bring in an electrician to replace the breaker.
