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Message

[motm] Re: AC Power, are there no standards?

2003-01-12 by elhardt@att.net

Phaeton777 writes:
>>Looking at the receptacle face on, the ground pins should be aligned 
downwards. This will result in the larger of the two prongs aligned 
to the left. This larger prong is the Neutral. The smaller prong is 
the Live. Also the live is usually indicated by a brass-type metal 
screw, while the neutral is usually silverish in appearance.<<

It sounds like you're talking about house wiring. I'm talking about the AC 
portion of a power supply. I know that the smaller slot in the wall outlet is 
hot and the larger neutral, but when I plug a three prong AC power between the 
wall and the power supply, I have at least one cord that flips the hot and 
neutral opposite of the other cords I've tested. That means there really isn't 
anyway for me to guarantee what is coming into my power supply. It seems to me 
there might be applications where one might want to know that. Maybe the only 
way to know is to use a two prong AC cord with the two different size connector 
tabs.

-Elhardt

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