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Circuit breaker thank you for your advice i actually already changed the 16 amp circuit breaker but the safety switch still turned off. I am in australia not usa but thank you for advising me I will try to find yet another electrician maybe now that christmas and new year are over they will be more willing to see the job through Ha!

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  • Stephen Evans May 11, 2010

    since you changed the safety switch, i would try to remove one outlet at a time and retry the switch each time. it may take alittle while if your not in a hurry. this may help isolate or find the problem before calling and spending more money again. just a suggestion, best of luck. Steve



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There might be a short circuit in your wring for that circuit.
You can unplug all your electrical items from that circuit.
See if the circuit still turn off.
If it does, it could be the wring or the equipment that is permanently wired in.
If not, you can plug in one item at a time, turn it on to determine which electrical item is defective.

Posted on Feb 02, 2009


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Keeps tripping breaker after using for an hour or so. I have already replaced gfi and breaker. Advice please.

Usually when a breaker trips it is either loose wire or the what ever is running uses too much current or is failing.

Mar 20, 2015 | Electrical Supplies

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How do I change my American standard horizon hx851 to receive Australian channels

To change this radio from Canadian to USA or to International frequency band plans, hold down the [16/9] key and press the [CLR (WX)] key. The band will change from Canadian, to USA, then to International on each press.
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1 Answer

Circuit breaker trips frequently. It is a double 20 amp switch.

Is this breaker connected to water heater?

1) A double 20 amp breaker is called a 240Volt breaker.
20 amp breaker is actually rated for 16 amps for safety margin.
It is also important that this breaker have 12 gauge wire which is color-coded yellow.
Look at label on side of water heater for wattage of unit.

2) For example 4500 Watt water heater is typical.
4500 watts divided by 240Volts = 18.75 amps which is nearly full capacity for the 20 amp breaker, and is slightly above the safety margin.

3) If breaker is getting old, and it works at full load each time water heater is on, it can wear out.
Open circuit breaker box and replace breaker:

4) You can also move circuit breaker wire to another same-size breaker and see if problem continues.

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Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
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Purchased "Reliance Lowboy electric water heater"

The water heater has two 4500 watt elements.
However both elements are not turned-ON at same time
So the water heater is 4500 Watts

Volts x Amps = watts
Amps =watts divided by volts
Amps = 4500 Watts divided by 240 Volts
Amps= 18.75

So that says a 20 amp breaker ... except for the 80% rule
80% rules says for safety, your Amp rating should be multiplied by 80%

20 amp breaker X 80% = 16 amps
20 amp breaker is actually safe for just 16 amps, and your water heater draws 18.75 amps.

The calculation shows you need a 30 Amp breaker.
30 Amp breaker requires 10 gauge wire.


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How to hook up single pole shunt tip breaker in panel

To be very safe, turn OFF your Main circuit breaker prior to doing this. This IS really important! You asked how to hook up the breaker, so I'm going to assume you already installed this. The first wire that you'll want to land under a screw is your ground (green) wire. This wire should be where all your ground/green wires are. Next, you're going to bring your white (neutral) wire to the neutral bar.  You should see other white wire's terminated (attached under screws) there. Then, bring your colored (ie usually a black or red) wire and attach it to your circuit breaker. Make sure that you are using a #10 guage wire. This wire guage is rated for 30 amps. If you're using a 20 amp circuit breaker, then use a #12 guage wire. And a #14 guage wire for 15 amp circuit breaker. Using these wire guages satisfy all electrical requirements (codes). Now, leave the circuit breaker in the OFF position, and close up your panel. After closing it, then turn ON your Main circuit breaker. If everything is fine, great! Before you turn on your circuit breaker, make sure the switch, device, receptacle (unplugged), is OFF. Then go to your electric panel and turn ON the circuit breaker. If the breaker holds (doesn't trip), then try your switch, device, or receptacle to see if everything works. One last thing to remember is, if you're using a 30 amp circuit breaker, then the device on the other end should only draw up to 24 amps. Meaning, don't put a 30 amp cir. brkr. on a 20 amp recectacle, switch, or device. For a 20 amp cir. brkr., 16 amps is the maximum load you can put on this. I hope this helps you. Just read it through once, and then highlight the main parts of this and you should do fine. Good Luck, and feel free to contact me if you'd like further assistance. - Jim

May 19, 2010 | Cutler Hammer Circuit Breaker, 30 Amp 120V

1 Answer

Where is the monitor switch?

The job of the monitor switch is to prevent the oven from cooking while the door is open.

If there is a problem with the door switches or door switch alignment that could allow that to happen, the monitor switch stands ready like a crowbar to ensure that the fuse and/or house circuit breaker will blow to interrupt power to the oven.

The service manual for this oven is here.

Since you're asking, I would bet you have an issue with your door switch or door switch mount, such as:

- the oven will count down but not actually start cooking when you press "Start". This is almost always a bad primary interlock (bottom door switch in this model).

- the fuse or breaker blows when you open or close the door. This is probably a sticky door switch or loose or broken door switch mount.

See , and

If you need more help, feel free to contact me directly with your brand, full model number and symptoms for free DIY tips, etc.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller

Nov 28, 2009 | Frigidaire FMV156DC Microwave Oven

1 Answer

When I plug in my laptop, a vaccuum, or some other electrical item like that, the circuit breaker trips.

have you got anything else plugged into the circuit? e.g kettle, toaster? if so you could be overloading the circuit. also don't know what country you are in but in Australia it is a 16 amp circuit breaker with 2.5mm cable. if your Circuit breaker is less than 16 amp check with an electrician and he could replace it and fix your problem. if it is already 16 amp you are most likely overloading the circuit by drawing to much amperage from the circuit.

Nov 11, 2009 | Maytag MGR6875BK Gas Kitchen Range

1 Answer

Every time I turn on the appliance it blows a fuse

A washer requires a dedicated electric outlet to operate properly. It is possible that the plug you have is part of another circuit and has some other high ampere drawing devices connected to it. Check to see if any other items are affected when the circuit trips (or fuse blows).

If you truly have actual fuses instead of ciruit breakers, make sure the fuse you are replacing is a slow blow type rated at the proper amperage for the circuit.

If you have circuit breakers, you might have to have a separate 20 amp dedicated branch circuit added to power the washer. (USA/Canada)

Without further details of the specifics of your situation, that is the advice to check first.

Jul 28, 2009 | Tricity Bendix Washing Machines

1 Answer

Relay Box for 1994 ford mustang cobra

relays are normally in the fuse panel on the left side of dash by knee.

Fuses and Circuit Breakers Location and Values
NOTE: The headlamp switch (11654) has an integral 20-amp circuit breaker.
  • The combination instrument panel fuse and circuit breaker panel contains most of the fuses and circuit breakers used in the system.
  • The fuses and circuit breakers are color-coded by amp rating.
  • The locations and values of the fuses and circuit breakers not contained in the panels are shown in the following chart.

Circuit Circuit Protection and Rating Location Headlamps and High Beam Indicator 20 Amp. CB Integral with Lighting Switch Heated Back Window 16 GA Fuse Link Engine Compartment Power Windows, Power Seat, Power Door Locks 20 Amp. CB Starter Motor Relay Load Circuit Fuse Link In Harness Engine Compartment Lamp Fuse Link In Harness Convertible Top 25 Amp. CB Lower Instrument Panel-Reinforcement

Cavity Number Fuse Rating Color Circuit Protected A 40 Amp Orange
  • Ignition Switch
B 40 Amp Orange
  • Ignition Switch
C 40 Amp Orange
  • Ignition Switch
D 50 Amp Red
  • Headlamp Switch
  • Instrument Panel Fuses 4, 8 and 16
  • Instrument Panel Circuit Breaker 12
E 20 Amp Light Green
  • PCM
  • Fuel Pump
  • HO2S (3.8L)
  • Canister Purge Solenoid
  • EVR Solenoid
  • Ignition Control Module (3.8L)
  • IAC Solenoid
  • Fuel Injector
  • Automatic Transmission
  • Camshaft Position Sensor (3.8L)
  • MAF Sensor
F 40 Amp Orange
  • Heated Back Window
G 20 Amp Yellow
  • Fuel Pump
H 60 Amp Blue
  • Fan Control
J — — Not Used K 10 Amp Blue
  • Anti-Lock Brake Control Module
L 20 Amp Red
  • Fan Control Monitor (PCM)
M 25 Amp Yellow
  • Horn
  • Foglamps
  • Daytime Running Lights Control Module
N 25 Amp Clear
  • Fuses 5 and 9
P 20 Amp Clear
  • Radio Amplifier
Q 20 Amp Yellow
  • Generator
S 30 Amp Yellow
  • Convertible Top Motor
T 60 Amp —
  • ABS

May 14, 2009 | 1994 Ford Mustang

1 Answer


Circuit breakers are designed to protect life and property. Do not use an appliance that overloads the breaker. If it is popping a 15 amp breaker try it on a 20 amp, if it does not trip the 20 amp breaker measure the amperage. If the actual amperage exceeds 16 (80%) of the overcurrent device or the device exceeds the Wattage stated on the device. Repair or replace it.

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