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The internal metal plates are heavier to handle the extra current. the plates are identical in size and thickness on the 2 i have takein apart,and all i can see is the extra slot on to 20 amp one. A 20 amp receptacle must be fed by #12 wire while #14 is good for a 15 amp. 20 amp cords should not fit into a 15 amp receptacle.

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โˆ™ 2005-03-28 12:58:38
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Q: Is there any difference in a 20A recepticle besides the sideway slot?
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