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#161077 - 03/29/07 10:46 PM Washer Grounding  
Admin  Offline

Administrator
Member
Joined: Oct 2000
Posts: 3,456
NY, USA
Quote
I have a picture of an old Kenmore washer, or rather, a ground connection on the back.

Any idea what this long ground wire is for? It has a ring-lug on the end. The label says: External Ground Connector. This is the way it was installed (now headed to the landfill.)

Ian A.
Theelectrikid

[Linked Image]


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#161081 - 03/29/07 11:37 PM Re: Washer Grounding [Re: Admin]  
wa2ise  Offline
Member
Joined: Nov 2002
Posts: 783
Oradell NJ USA
That's for use in grounding the washer to a cold water pipe or electrical box, if the outlet avaliable is not a 3 prong type.


#161163 - 03/30/07 11:00 PM Re: Washer Grounding [Re: wa2ise]  
yaktx  Offline
Member
Joined: Feb 2003
Posts: 288
Austin, Texas, USA
This is one of several grounding methods that predate the widespread adoption of NEMA 5-15 devices. (Washers were among the first appliances to require equipment grounding.)

Another method is the cold water hose with steel wires braided into the rubber. It was specifically intended for the cold side. (This method wouldn't work for modern machines, which have a plastic solenoid valve body. It wouldn't work with plastic pipe, either.)

My dad told me he remembers when some towns expected washers to be grounded with a jumper as shown here. Likely as not, few users understood this, and when machines were moved, the ground was not reconnected.

I've heard that some jurisdictions, before the '96 NEC, required this type of jumper for dryers. The internal bonding strap had to be removed, and the NEMA 10-30 cord freed of a grounding connection. Imagine what happened when such a dryer was moved to another house... No more ground! I suspect the same happens when today's washers are moved from a NEMA 14 to a NEMA 10 location.


#161286 - 04/01/07 10:39 AM Re: Washer Grounding [Re: yaktx]  
electure  Offline


Member
Joined: Dec 2000
Posts: 4,260
Fullerton, CA USA
Laundry receptacles were the first in dwellings to require an equipment ground, W-A-Y on back in the 1947 NEC.

From 2124 "Receptacle Outlets Required"


[Linked Image]

Whatever possessed the manufacturers to keep putting these jumpers on washing machines for so long escapes me.



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