Art and JIm, One other thing to note: All of the flat (air conditioner type) heavy- duty cords and extensions I've seen that fit this type socket seem to be designed for use with the ground pin at the bottom.
Also, although there is some shock hazard from the partially retracted Hot lead with the ground at bottom, when an outlet is installed with the ground pin up it is possible to have the ground lead disconnect first. If this happens with a product with high (but acceptable) leakage a potentially lethal situation exists. Scott Lacey On 19 Jul 2002 at 13:59, Art Michael wrote: > > Hello Jim, > > I don't believe the orientation of the U-ground pin is declared > anyplace in the NEC. When I recently approached my local AHJ with this > question he related that it is a matter of custom (locality > dependent). In this area, central Connecticut, the custom is: > > For commercial/industrial applications, U-Ground topmost > For household wiring, U-Ground towards the bottom > > The rationale offered for the U-Ground topmost; if the plug partially > separates from the outlet, anything falling into the opening between > the plug and the outlet will first encounter the grounding pin. (seems > to me that argument holds whether the use is commercial/industrial or > household). > > Re dimensions of the outlet; send me your fax # and I'll fax you the > dimensions. > > Regards, Art Michael > > > -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > | http://www.safetylink.com | | > | | The Safety Link is the most > comprehensive collection | | of product safety and standards > links on the WEB | | Check our latest offer. > | | | | > | | Int'l Product Safety News > | | Founded in 1988 > | | | | > P.O.Box 1561 - WWW | | Middletown > CT 06457-8061 U.S.A. | | Phone: (860) 344-1651 > Fax: (860) 346-9066 | | email: > i...@safetylink.com | > -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > > ------------------------------------------------------------------- On > Fri, 19 Jul 2002, Jim Eichner wrote: > > > > > A couple of questions about our standard North American 120Vac > > socket: > > > > 1. Orientation: We have lots of people in the office here on both > > sides of this one, and I can't find a normative reference in the CEC > > or the NEC. Which is the correct way "up" when installing a socket > > on a wall - ground pin above the L and N blades, or L and N above > > the ground? What is the code reference for this requirement, or is > > there none? > > > > 2. Dimensions: Can anybody share the spec's for the dimensions, > > with tolerances, of the line, neutral, and ground blades for this > > configuration? I'm sure it's in the UL and CSA standards but I don't > > want to spend hundreds of $ for a one-time question. We have no > > on-going need for these standards! > > > > Thanks in advance for your help, > > > > Regards, > > Jim Eichner, P.Eng. > > Manager, Engineering Services > > Xantrex Technology Inc. > > Mobile Power > > web: www.xantrex.com <http://www.xantrex.com> > > Any opinions expressed are accidental. 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