Yes, as long as the extension cord is rated for the load. Most microwave ovens use 1000W or more, some less. A standard two wire extension cord would be unsafe. There are, however, extension cords which have the proper gauge of wire and the necessary 3-prong outlets which a microwave would need to operate safely.
If there is no load plugged into the cord there will be no power consumed. The only time the resistance of the cord will come into effect is when the circuit becomes energized through the load plugged into the end of the cord.
A 15 Amp extension cord can be plugged into a 20 Amp circuit. It is important that what you're extending does not require more then 10-12 Amps.
There are several parts to an extension cord. There is the "female" end where you would plug in the appliance, the cord, and then the "male" end which gets plugged into an outlet.
Light and an extension cord. The extension cord will act as an added resistor in series. The more cord you add will only increase the overall resistance from the wall outlet. If you use a high gage extension cord, this will help reduce the resistance. But any cord will add resistance. If the gage is low, then the cord will actually heat up and you will be able to feel the heat. That is due to the resistance within the cord. Check out my sketch of how I perceive your Q: Chord + drop light w/chord ]---------------(]--------O Versus drop light w/chord ]--------O
15A should be the max needed for household versions
Yes, it safe to touch a extension cord while its plugged in.
If there is no load plugged into the cord there will be no power consumed. The only time the resistance of the cord will come into effect is when the circuit becomes energized through the load plugged into the end of the cord.
Yes, you can put the iPod Touch wall charger into an extension cord. That extension cord has to be plugged into a wall to be able to charge the iPod, though.
A 15 Amp extension cord can be plugged into a 20 Amp circuit. It is important that what you're extending does not require more then 10-12 Amps.
Yes. It should be a 'heavy-duty' extension cord, rated for 15A or 20A .
There are several parts to an extension cord. There is the "female" end where you would plug in the appliance, the cord, and then the "male" end which gets plugged into an outlet.
A break in the electrical wiring inside the cord - usually it is right by the male end that you are plugging in to power - so a replacement end can be put on the block heater cord ( those flames sure can startle a person ! ) After it happened to me , I always made sure that I plugged my block heater cord into my extension cord before I plugged my extension cord into the electric outlet
Light and an extension cord. The extension cord will act as an added resistor in series. The more cord you add will only increase the overall resistance from the wall outlet. If you use a high gage extension cord, this will help reduce the resistance. But any cord will add resistance. If the gage is low, then the cord will actually heat up and you will be able to feel the heat. That is due to the resistance within the cord. Check out my sketch of how I perceive your Q: Chord + drop light w/chord ]---------------(]--------O Versus drop light w/chord ]--------O
15A should be the max needed for household versions
Your engine block heater cord plug is plugged into an extension cord, then into your garage or home outlet. Not into the engine.
Yes, and extension cord can be used with a microwave. But it is critical to pick an extension cord with a sufficiently high rating on it. Hardware stores and large home stores have extension cords specifically for use as appliance extension cords. They are heavy, and they have only a single place on the end to plug something into. They cost a bit, but are worth it in peace of mind.
Assuming that the extension cord is plugged into a normal household receptacle rated at 15 amps the cord will handle 15A x 120V = 1800 watts. If the cord is of any length, at that wattage, you will feel the cord start to get warm like a heating cable.