My 20 amp fuse keeps blowing even though I have disconnected everything from all the outlets

How to Fix a Microwave Oven - Simple Fuse Replacement ...

? 18:04
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May 21, 2013 - Uploaded by GuruBrew
How to Fix a Microwave Oven - Simple Fuse Replacement. GuruBrew .... I'm hoping it's just a blown fuse ...

Whirlpool Microwave Keeps Blowing Fuses - YouTube

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May 7, 2013 - Uploaded by AdamDIY
Whirlpool Microwave Keeps Blowing Fuses ... MicrowaveThermal Fuse Replacement - GE Microwave ...

Microwave Oven Repair 101 ' DoItYourself.com

If you've disconnected everything and the amp is still blowing fuses you'll need to have a technician look at it. Most commonly I find that condition caused by a failure in the power supply section of the amp.

Good luck.

If you use too large a fuse, the wiring can catch on fire, and the whole car could burn up. You'll need an auto electrician to trace that problem. You can remove any bulb and unplug any device that is on the Acc(essories?) circuit; then see if a fuse will stay; start replacing items till you blow the fuse. It seems like a dead short which can surely melt wires if you keep taking chances. good luck.

Just replacing the plug or terminal will be enough. Make sure to tighten the replacement very well. Loose contacts create high electrical resistance heating the plug or terminal. High temperature creates even more resistance heating even more the plug or terminal. This is the reason why it melts. Good luck.

could be the safety switch for the pedal

Seems to me you have a short to ground what you can do is unplug the fuel pump connector then replace the fuse to see if it still blows if it does not then you need to replace the fuel pump and sender if it does blow then you will need to trce the wire back to the fuse panel to see where it is shorted ....

The National Electric Code (NEC) does not directly state the number of outlets per general purpose circuit for a residence. They only state that "x" amount of sq. ft. must have "y" amount of circuits and that they be evenly distributed. The number of outlets is then limited by physical outlet spacing rules.

However, a rule of thumb is the points system. A 20 amp circuit is 20 points. A regular duplex receptacle is 2 points and a light is 1 point. You can have any combination of receptacles and lights that add up to 20 points. For example, 10 duplex receptacles x 2 points = 20 points. Or, (8 duplex receptacles x 2 points = 16) + (4 lights x 1 point) = 20 total.

The concept is the same for a 15 amp circuit except the total points will then be 15.

So, the answer is about 10 receptacle outlets per 20 amp circuit. In a pinch, you can stretch that to 12 or so and still be OK.

This is more than likely a statement of the electrical supply to the printer.

Laser printer's typically require a high in rush amperage to keep the fuser lamp and fuser warm. You can see the effect of this by looking at the lights in the room. If the lights dim about every four seconds its because the printer is pulling a higher amperage from your electrical system.

Normally, laser printers are "Strongly Suggested" to be on a dedicated 20 amp line. If you are using them on a normal 15 amp line that is also supplying other receptacles and devices, when the fuser demand peaks it may be enough to trip the circuit.

Now, there are a couple of ways to fix this. One is to upgrade the entire circuit to 20 amp. That include a 20 amp breaker, 12 AWG wire and a 20 amp receptacle.

If you cannot do this, then switching either the fuse or the breaker or a "Slow Blow" may help you. This type of fuse or breaker will add a delay into the "trip" part of the circuit.

Don

Hello prabh_dusanj,

First make sure that the amp is not operating into too low of an impedance. If the load is OK, it's most likely a short in the output transistors.

Hope this helps.

the machine is pulling to much power.check to see if it is on a 15 or 20 amp outlet. you said you replaced the fuse. the amp size should be on it. if it is a 15 amp fuse,plug the machine into a 20 amp circuit and see if the fuse blows then. it shouldn't since it wasn't blowing everytime on the 15 amp circuit, but never put a 20 amp fuse in a 15 amp socket! the fuse can handle the load[ no pun intended], but the electrical wire would burn not blowing the fuse, thus causing a fire.
hope this helps.
wg