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Countertop microwave oven.
Microwave Ovens (264)
Panasonic Corporation of North America    
The consumer says the label on the oven, and the specification in the operating instructions booklet show power consumption 12.7 amps. The booklet shows 1460 watts. The consumer measured it using two different instruments with the same results of 16.4 amps on full power. The consumer measured 1950 watts on another instrument and on the utility's meter. What he measured would require a 20 amp circuit as is stated in the manufacturer's booklet.

The consumer says the unit does not come with a 20 amp plug which means a consumer could plug it into a 15 amp outlet, overloading the outlet and possibly tripping the breaker. The booklet is the only place where it advises to use a 20 amp circuit. The consumer contacted the manufacturer who told him he is not measuring it right. The consumer disagrees. The consumer contacted the manufacturer who asked him to ship it back. The consumer had a different microwave with same brand and same model number and the same hazard.
The Consumer Added: The reader of my complaint should be made aware that, as permitted by the National Electric Code (NEC), residential kitchens rarely have 20 amp outlets on the 20 amp "s mall appliance circuits" that are required along the kitchen counters. The st andard outlets are 15 amp "duplex receptacles" with a 20 amp feed-through rating. This means these outlets are permitted to be on 20 amp circuits but that appliances plugged into them must be limited to 15 or 12 amps, depending on the length of time the appliance can be set t o operate. The only appliances in our kitchen that exceed 12 amps is our 4-s10t toaster; it draws 15 amps, but is designed not to operate continuously for more than a few minutes.
Thi s microwave oven seems capable of running for an hour or more and thus may be l i mited t o 12 amps by the NEC or UL. The Panasonic Canada web site lists similar mi crowaves, but they all have lower output wattage ratings. I suspect the Canadian Standards Associat ion (CSA) or UL Canada required this reduction t o lower the amp draw to 12 amps. I have a l ot more faith in Canada than in the US when it comes electrical equipment. When I replaced all the outlets and switches in my home about 25 years ago I made sure they all had CSA approvals on them.
One reason I decided to check the amperage of my Panasonic microwave oven it because it is not approved by CSA or Canadian UL.
Incident, No Injury
Comment from Panasonic Corporation of North America 4/20/2012
Panasonic is committed to engineering and manufacturing safe, quality consumer products. All of Panasonic’s products are designed to meet or exceed Underwriters Laboratories, Inc. (UL) safety standards, and all applicable government regulations.

The subject model meets all applicable UL safety standards and complies with all applicable requirements of the Canadian Standards Association (the counterpart safety agency in Canada).

Panasonic contacted the consumer and offered to test his particular unit to ensure that it is in compliance with UL standards, but the consumer refused. We believe that the consumer may not have measured the microwave oven’s input current and power in accordance with UL’s (and CSA’s) applicable standards and industry practices.

In any event, the consumer’s claim does not present a safety hazard.

CPSC does not guarantee the accuracy, completeness, or adequacy of the contents of the Publicly Available Consumer Product Safety Information Database on, particularly with respect to information submitted by people outside of CPSC.