I plan to install my old electric dryer at my cottage in Canada. The
dryer will be located under a weatherproof porch, but the operator
will be standing directly on the ground, or on a wooden platform in
front of the dryer. The circuit will be a typical 240 volt/30 amp "3
prong" pigtail/plug type. My Concern: The plug is labeled
"non-grounding" and therefore I need to establish a device ground (not
potentially involving the operator!). There is no water pipe, etc.
nearby that could be used for this device ground. So, I thought I
would go to the expense of getting a 240volt/30 amp GFCI breaker for
the Square D (QO) service panel, and, run 10/3 BX with Ground from
that breaker to the 2 hots and 1 neutral of the dryer outlet,
connecting the BX ground wire to the grounding screw on the metal
dryer case. This wire would establish a device ground directly from
the dryer's metal case to the ground/neutral buss of the service
panel. I want this circuit to be "overkill +++" safe. I very much
appreciate any constructive comments or suggestion on how to improve
this plan. My neices and I thank you in advance for you assistance!
Modern dryers give you a choice of 2wire or 3wire. If you chose 2wire, you
jumper the neutral to the ground.
If your dryer has that jumper, then remove it, and wire as planned. It
should be fine. If your dryer cannot be "unjumpered", you will gain nothing
by adding the 3wire, you will just have two neutral/grounds. In fact, I
doubt the GFCI would even work with that wiring. (However, it should work
with 2 wire)
I do not know about Canada but all US dryers need to be 4 wire now. 2hots,
neutral, and ground. The plug is different as well. My new dryer company
tried to give me the old 3 pronged, I told them that I wanted a 4 wire,
they said no and I said refund my $2k for all that I had just bought. Oddly
they had another box with 4 wire cords in it.
Check with the local authorities to be sure.
Canadian dryers and stoves have required plugs and receptacles and a
separate ground wire and prong on the plug since before 1970, as that was
the regulations when I built my house. That dryer must be an o-l-d one.
Not true; all new dryer outlets have to have both a neutral and a ground.
Since most existing outlets are for three prongs (combination
ground/neutral), the dryers are designed to accomodate either cordset.
(Incidently, my earlier reference to 2wire and 3 wire should have been to
3wire and 4wire; it is x/2 and x/3 cable. I appreciate that no one pointed
out my absent mindedness.)
>My new dryer company
You must have gotten too low a price or something, because it is trivial to
change the cordsets.
If there is not a 4th grounding wire (or a grounded conduit -- or at least
EMT) then run a 10-3 plus ground cable and buy a "3 pole 4 wire 120/240Volt
30 Amp" grounded dryer plug and dryer cord (two straight blades, an L shaped
neutral blade and a U shaped ground IIRC). No need for GCFI (unless mandated
by local codes). These will likely cost about 3X what the older style costs
(say US$15 vs US$5 for the plug).
In the old days (thru the '60's or so?) the 3 wire 120/240V w/o ground
"crowsfoot" plugs/cords (two blades at an angle and an L shaped neutral
blade) were comon, and sometimes "grounding" was accomplished by tying the
neutral to the chassis, but this is not considered good practice now. The
neutral should be bonded to the ground ONLY at the main service entrance,
nowhere else. You may be ligcky and have a grounding wire in the existing
cable. If you have armored cable or EMT (thinwall tubing) you may have a
good ground through it (check every EMT joint for tight screws). If the
breaker is in the same panel as the main service entrance breaker th eground
and neutral bus will likwly be the same, if it is a sub panel, they should
be seperate buses.
The dryer should be convertible to a 4-wire plug. That would be a lot
cheaper than a GFCI breaker. Buy a grounded dryer cord, a matching
outlet, and run your favorite kind of #10 4-conductor cable.
firstname.lastname@example.org (Doug M.) wrote in message
Canadian electrical codes always has asked for a 4 pronge dryer plug
and outlet with a ground. We are also not allowed to have the ground
and nuetral wired together at the appliance, feed wire should be,
Electric dryer - 220 - 240 volt, 60 hertz, properly grounded circuit
with 30 amp breaker or fuse protection. #10 gauge wire is preferred.
No washer for the dryer?
Some GFI info from some appliance manufactures....
Some electrical helps/tips/ect.
Appliance Repair Aid
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