Question about Microwave Ovens
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Posted on Jan 02, 2017
SOURCE: microwave oven problem
My microwave oven makes my cups and dishes so hot they can't be touched . The dish is much hotter than the food or beverage inside .
Do I have a defective microwave ?
Posted on Sep 17, 2008
if you open the cupboard door above the microwave you should see two or four screws/bolts holding the microwave up there. there should also be an electrical outlet up there where the microwave is plugged in. have at least two strong people. put some blankets on your stove top to protect it. unplug and remove the screws. it should be connected in back by a metal plate also. when the microwave is tilted down at a fourty five degree angle, you can give a little lift and it should pop off the plate in back. it is heavy. get a new one at sears or other appliance retail outlets. i dont recommend best buy. they really screwed me over so i dont send business their way.
Posted on Oct 20, 2009
Please stick with me to the end ... some examples are for example only. There is no 1000 watt circuit per'ci.
This will not be possible overload, this is an accident waiting to jump on you, my friend
Install dedicated circuits for these ovens, my friend. It will cost you a little but will be better than having dissatisfied guests or talking to the zoning board or boarding house authority or (gasp) the fire inspector after the fire.
If you don't do this, when the breakers start flipping off, tenants will run extension cords to outlets that have power. A whole different and worse, problem!
Rule of thumb, lighting circuits should be designed to operate at 80%, for example, if you have 800 watts of lights on a 1000 watt circuit, you are at the max.
So, there is a possibility that your circuit for lights is already near max. Adding ovens is trouble. Don't forget the iPOds and cell phone chargers as well as lap top chargers, walkman chargers (older students), little TV's, DVD players, clock radio's, electric shavers, curling irons, steamers, popcorn makers, lava lamps and occasional electric heaters that will be snuck into the room.
What is a 1000 watt circuit ... good question. Ohms law comes into play here.
Volts X Amps = Watts
120 volts X 8.333 amps = 500 watts (a smoothie blender) 300 watts (slow cooker) 200 watts (hand mixer) = 1000 watts.
A 15 amp circuit will protect #14 wire and can carry about 1800 watts (a toaster (1500 watts), for example).
A 20 amp circuit will protect #12 wire and can carry about 2400 watts (i am using a big paint brush here. these numbers are pretty close but not exact and I am not a licensed electrician.)
When I wire, I aim lots lower, preferring to OVER build than to under build.
10 amp circuits are rare in modern homes. In general practice, if the need was to be protected at 10 amps, the wire used in the circuit would be #14 and it would be protected by the breaker at 10 amps. In this case, it is the device plugged into this 10 amp circuit that needs protection rather than the #14 wire (which would be technically oversized)
Another consideration for you is where is the water? If you have an outlet that is 5 feet from a water source (bath - kitchen - etc) it must be protected by a GFIC
A 30 amp circut will protect #10 wire --- but this is not a normal household circuit.
Maybe the best option is for you to have your electrician install a sub panel in the vicinity of use and run several 20 amp circuits from that location to the various rooms.
The answer to your question "How many (1150 watt)micro wave ovens will a 20 (amp circuit handle)" is TWO with nothing else on the line. The National Code requires dedicated circuits for micro wave ovens, BTW. A commercial application may have a different (more stringent) standard in your town.
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Posted on Dec 13, 2009
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