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trader_4 trader_4 is offline
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Default What is the difference between ground and neutral from theperspective of the wall outlet working backward to the power company?

On Monday, July 29, 2019 at 11:26:11 AM UTC-4, dpb wrote:
On 7/29/2019 10:02 AM, trader_4 wrote:
On Monday, July 29, 2019 at 10:47:05 AM UTC-4, dpb wrote:
On 7/29/2019 5:42 AM, trader_4 wrote:
...

AFAIK, there never was a washing machine of that timeframe or any timeframe,
where they told you to run a separate wire between a non-existent
ground terminal in the washing machine and a cold water pipe.
He's telling you the NEC hasn't talked about grounding anything to cold
water pipes for a long time. I've never seen any washing machine that
required anything beyond the cord and plug provided.
...

Au contraire, good buddy!

"Way back when" they all had an external ground connection supplied with
vendor instructions to attach to electrical ground.

That began when there was 2-wire service and continued well past NEC
changes requiring 3-wire as the existing base of existing was the
majority of installed base.


Looks like code required three prong, grounded receptacles starting in 1947
for washing machines and similar wet locations.


Perhaps, but how many do you think actually put in a new circuit with
ground when they brought that pretty new washing machine home vis a vis
those who used the 3:2 adaptor or just put a 3-prong outlet in the box
in place of the two-prong?


Over the last 72 years? The vast majority of them, that's for sure.
And it seems that the lady in question here has a grounded three prong
receptacle based on the questions asked and that it's not supposed to have
an additional ground wire run to a cold water pipe.






Manufacturers just supplied what they knew would be needed for modicum
of safety irrespective of Code.


I seriously doubt washing machine manufacturers disregarded NEC.
See the example that follows.



I can _probably_ even dig out of the
file box in the closet a manual from one of maybe 50-60 years ago..


But we're talking about what some lady has TODAY and from the questions,
it appears to be a grounded three wire receptacle we're talking about.




..Dad
kept everything he ever bought and we've only tossed out a minor
fraction as the rest is kinda' entertaining or history (or, in some
cases, the item is still actually around and used, like the waffle iron
that is original from 1947 when first got REA and off the 32 VDC Delco
to AC service. I happen to know about it because had to rebuild the
cord so had looked at the book to see if it had any 3rd party ID for old
part number. Had some trouble finding a two-prong connector that still
used the same-sized pins as it...but did finally locate a source so it's
still waffling after all these years. )

I'm pretty sure the GE bought just a few years ago still has the
connecting point supplied with it but I'd have to go pull it out from
the wall to confirm.

--


That would be something, if it did. But even if it did, I bet there
is nothing in the install instructions that tells you to ground it to
a water pipe under any circumstances.


Well, if I can remember long enough after I get up to look when go back
outside...and no, the washer isn't outside, it's in the basement where
the work clothes change room is..

--


Here is an example from a GE owner's manual:

https://products.geappliances.com/Ma...49-90576-3.pdf


CIRCUIT €“ Individual, properly polarized and grounded
15 or 20 amp circuit breaker or time-delay fuse.
POWER SUPPLY €“ 2 wire plus ground, 120 Volt, single
phase, 60 Hz, alternating current.
Outlet Receptacle €“ Properly grounded 3-prong
receptacle to be located so
the power cord is accessible
when the washer is in an
installed position. If a 2-prong
receptacle is present, it is the
owners responsibility to have
a licensed electrician replace it
with a properly grounded 3-prong
grounding type receptacle.
Washer must be electrically grounded in accordance with
local codes and ordinances, or in the absence of local
codes, with latest edition of the NATIONAL ELECTRICAL
CODE, ANSI/NFPA NO. 70 or CANADIAN ELECTRICAL
CODE, CSA C22.1. Check with a licensed electrician if you
are not sure that the washer is properly grounded.