FW: FW: Hubbell twist-lock connectors - test-drb@ccmp.vtda.org

14 Feb 2002

Okay guys, this is from my wife, who works for Hubbell Wiring Devices...

:-)

---   David A Woyciesjes
---   C & IS Support Specialist
---   Yale University Press
---   mailto:david.woyciesjes@yale.edu
---   (203) 432-0953
---   ICQ # - 90581
Mac OS X 10.1.2 - Darwin Kernel Version 5.2: Fri Dec  7 21:39:35 PST 2001
Running since 01/22/2002 without a crash

...
  ----------
 From: 	Theresa Woyciesjes
  	The green dot is the marking that UL allows manufacturers to use on
Hospital Grade devices only after the product has been tested and performs
to the UL specs for Hospital grade.
...
  The Isolated Ground triangle is a designation that is
required by UL and
 C.S.A. (Canadian Standards Ass.) to mark Isolated Ground outlets.  Orange
 may be the most popular color for the receptacle, but it is not considered
 to be a clear enough marking for UL & C.S.A.  The outline of the triangle
 does not have to be any specific color, only easily recognizable.  The
 interior of the Triangle must be orange.
 Hospital Grade IG receptacles will have both the green dot and the
 triangle.
   	BTW - The reason someone may want IG receptacles in their home is to
protect the ground - you know that computers use the zero ground as the
reference for binary code - well, if you are running your computer and your
wife turns on the vacuum or the blender, the motor load can throw noise onto
the ground - causing your computer to read a 0 as a 1.  If you have your
computer plugged into a IG receptacle that is properly installed with it's
own ground wire, the interference caused by the motor load will go  out on
the house grounding system with out effecting your PC.
...

 Theresa - Ann Woyciesjes
 Hubbell Wiring Device - Kellems
 National & Strategic Accounts

 >> David Woyciesjes
&lt;DAW(a)yalepress3.unipress.yale.edu&gt; 02/14/02 10:56AM
>>  
     Do you have a minute?

  ----------
 From:     Robert Schaefer

 ----- Original Message -----
 From: "Tothwolf"

 > On Wed, 13 Feb 2002, Robert Schaefer wrote:
 >
 > > s/almost// The green dot is part of what makes it `Hospital Grade'
 > > (The Code now specifies a Hospital Grade MC cable too-- can you  guess
    the difference between it and `regular' MC?)  Red
means a circuit on
 the Legally Required Stand-by System (read `on the generator'). 
 I would hope that they would be on some sort of system that keeps the
 voltage constant during the transfer from utility to generator power  too.

 I don't know.  I do know that the IV pumps are battery units, and only  the
  charger plugs in.  I've spent too much time
in Hospitals lately, I  guess!

 >
 > > Isolated ground recpts will have a green triangle on them, but are  not
  > > necessarily orange in color, all the
ones in the upstairs of my  house
    are white.  If I tried to install orange recpts
anywhere but the
 basement/garage, my wife would have killed me! 
 I thought they had an orange triangle on them? Many of the ones I've  seen
  are that way. Maybe hospital grade isolated
ground receptacles have a
 green triangle on them instead of an orange one?  
 I'm 99% sure it has to have a green dot to be hospital grade, and I'm  90%
  sure it has to be a green triangle on it to meet
Code requirements.  That
  said, I've seen and installed more than one
with an orange triangle on  it.
  Kinda like calling it a Centronics port, I guess.
 ;)

 >
 > Why did you install isolated ground receptacles in your home? The only
 > real application for them is when you have a metallic raceway  (conduit)
   and want
the ground return wire independent of that raceway. I haven't
 seen conduit in too many homes yet ;)  
 You haven't seen my house yet.  FWIW, I'm in the middle of negotiations
 with
 my boss about a 15KW nat. gas fired 480V 3P generator.  I'm also  thinking
 > about pricing a Technical Power transformer, to run some of my machines
 > on.
 > 
 > What can I say?  At least I'm not a burden on Society!  ^_-
 > 
 > >
 > > -Toth
 > 
 > Bob 