[Shop-talk] 220 outlets

Mullen, Tim (IS) Tim.Mullen at ngc.com
Wed Jul 29 14:17:29 MDT 2009


Doug Braun
>
> Also, shouldn't there be a different plug, with its
> prongs in a sideways "T"
> arrangement (e.g. -| ) to fit
> the special 20 amp receptacles (e.g. | |- )?

Of course there is.  The advantage of a 20 amp (120 volt) socket is that
it can take either the standard NEMA 5-15P plug (the normal standard 15
amp plug we are all familiar with) and the NEMA 5-20P (the 20 amp
version).  That allows you to plug a 15 amp device into either a 15 or
20 amp 110 volt socket.  But you can't plug a 20 amp device into a 15
amp socket.

Here's a link to some images of plugs/sockets:

http://images.google.com/imgres?imgurl=http://www.sheeline.com.tw/images
/sl-208-2.jpg&imgrefurl=http://www.sheeline.com.tw/pro_american-canadian
-type.htm&usg=__kF_cT20fJ00kCxlM2fp0hoK_FX0=&h=275&w=275&sz=13&hl=en&sta
rt=9&tbnid=s4YZXYZAVON5eM:&tbnh=114&tbnw=114&prev=/images%3Fq%3DNEMA%2B5
-20P%26gbv%3D2%26hl%3Den

Tim Mullen

Chantilly, VA


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