The dryer stopped heating (but kept tumbling), we replaced it, and the new
dryer said "Voltage problem"
I checked the plug/line, and I'm only getting 110 (white+black), the red
only gives me a tiny ~2-5V jump on the meter.
The range plug has 110, and 220 working just fine.
My question is: is there a break in the circuit, or has the breaker just
gone bad?
(I'd like an educated thought before shutting down the whole house to pull
the breaker box open.)
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"Killjoy" <killjoyntt_at...@foo.com> wrote in
message
Certainly sounds like a wiring issue. Also sounds like your dryer
issue might not have been a problem with the dryer at all. (I bet the
drum motor and timer are 120V but the heating element is 240V)
First of all it seems odd for the range and dryer to be on the same
circuit. Generally a range has a 50A circuit all to itself, and then
the dryer a 30A circuit. Not so?
After that, I would not be looking in the breaker box itself but in
the box for the dryer recep and also the range recep. I'd be looking
for a loose/corroded connection in one of those places, and or a
faulty dryer recep or cord (or did you get a new cord when you got the
new dryer?) If the range plug is getting proper voltage on both hot
wires that pretty much says that the breaker is good and that the wire
connections at the panel are torqued down well enough to at least make
contact.
You sure you don't have a 30A 240V breaker somewhere in the panel?
nate
It's a single breaker, double-wide, looks like 2x40 amp breakers side by
side, but the handles are attached and flip as one.
I throw it, and the dryer, and range turn off.
If it's only got 2 terminals on it, and the range circuit is working fine,
I guess the dryer wire must be wrecked somehow.
There's no chance a double-breaker would have 4 terminals is there (2 for
each circuit? like 2 breakers with their handles literally glued
together?)
(I realize most of my questions could be answered by opening the box
itself, but there's too many people using computers in the house today,
also it's winter in Canada, and I really don't want to cut off power to
the furnace blower if my time in the box is going to be unknown)
> First of all it seems odd for the range and dryer to be on the same
> circuit. Generally a range has a 50A circuit all to itself, and then
> the dryer a 30A circuit. Not so?
Not only is it "odd", it would violate NEC so unless it's a homebrew job
I'd guess it isn't so...
> After that, I would not be looking in the breaker box itself but in
> the box for the dryer recep ...
That certainly is first place to check (altho certainly will want to
find the correct breaker and make sure that it's thrown and verified by
the 110V also going away before opening it up). Then, if it isn't
obvious what the problem is, once have things in a configuration that
won't short, etc., can turn breaker back on and check for voltages on
the two hots and see if is at the receptacle or the feed end. Work way
back to the necessary point.
If this is unclear or makes OP nervous, the next step is call electrician.
--
Sounds like it's not a breaker problem, but a wiring problem.
As someone pointed out, no way both appliances should be on one 40 A 2-pole
breaker.
I'll bet if you checked, you'll find the dryer going to only one of the
double breakers, ergo only 110-120.
And maybe not at the breaker box, but further down -- mebbe someone
wire-nutted the wrong two wires together..
You should keep the range on the 40 A, and get a 30 A double breaker for the
dryer.
And no, double breakers don't have 4 screws.
--
EA
It sounds a lot like both the dryer and the range are sharing the one
double breaker. I've never seen one that has more than two
connections on it. I'd take the breaker box cover off and see if both
circuits originate at the box. If there is only one set of wires
then either the dryer outlet or the range outlet probably have the
wiring that carries on to the other device. If the first stop is the
range then you could have a loose wire in the range outlet.
Your set up is not normally found in the states. I don't know about
canada code. But here each device would have to have it's own double
breaker. If I ran into that setup around here I would assume some
home owner added the dryer or range to the already existing circuit at
some point later after the house was originally wired. If you end up
having to rewire I would suggest you move the dryer to it's own 30amp
double pole circuit.
And to add to the above, if the existing dryer recep/cord is 3-wire, I
would pull the new wire with 10/3WG (or larger, if necessary for
whatever reason) and use a 4-wire (grounding) recep. You'll need to
replace your cord, and also remove the bonding jumper inside the dryer
to do this. The benefit of doing it this way is that now the ground
for the case of the dryer will no longer be sharing the same conductor
with the neutral.
doubling up on the breaker terminals is rarely done, and in general
breakers aren't listed to have more than one wire under the screw
terminals once you get above 20A. (and many are not rated for more
than one wire at all.) It is possible that the wires are spliced in
the breaker box, but I suspect more than likely one recep is fed from
the other, otherwise why not just have two different breakers in the
panel (that way you can do a load of laundry while cooking dinner.)
Only reason I could see to splice them together in the panel would be
if the panel has no more spaces to add breakers.
I don't know whether having the dryer and range share a circuit is OK
by current code, but I somehow suspect that it is not.
nate
As I took the panel off the breaker box, and saw 2 large wires (different
from either of the wires going to the Range or the Dryer) leaving the "80"
amp breaker, my mom said something about a switch under the stairs.
Thanks Mom.
The 80 amp was run to a huge (as big as the breaker box) junction box
under the stairs, with a wire running to the Range, and another running to
a small 30 amp breaker box beside it with a VERY big toggle switch on it.
I opened that box, and inside I found sound wiring, and two fuses (one for
black, one for red)
The fuse for the red had become very slightly loose, which explains why I
was getting that TINY reading on the Volt-Meter.
Tightened the fuse, put everything back together, and the ship's back at
100%!
Thank you all for your help, I knew there had to be something more to the
puzzle.
(Also, this is a 1940's house, so this entire circuit would have been
added much later on.)
Yeah, I was guessing a splicing problem, but I guess this is close enough!
Seems like they went through some electrical drama, in wiring these things
up.
Fuses??? wow....
But, I do have a bunch of *60 A fuses*, that came with my 1920 house. I
believe these might have been the original fuses in the main disconnect,
before they went to cartridges.
Yeah, the 60 A fuses have the same edison base as 15-20 fuses, just a
maroon-ish color. A little risky to keep around, in hindsight -- 60 A on 15
A circuit-type risk... Fortunately, everything has been changed to
breakers.
--
EA
glad to hear you found it!
just for future reference, if it's a double pole breaker with each
pole labeled 40A, it's not an 80A breaker, it's a double pole 40A
breaker. (not criticizing, not everyone's an electrican - neither am
I - but it does help to use the correct terminology.)
nate
Then you add a sub-panel to be code compliant.
>
> I don't know whether having the dryer and range share a circuit is OK
> by current code, but I somehow suspect that it is not.
>
> nate
This not approved wiring in Canada. Most Canadian wiring codes are stricter
than US codes. The dryer and stove require separate breakers and cables from
the breaker box. Also the breaker box should not require the power to be
turned off at the main breaker to open the panel, except for accident prone
people who cannot resist touching live terminals.
Also Canadian dryers (and stoves, except built-ins) come with their own cord
and plug already installed, so this should not be a problem. It sounds like
there is a box somewhere in the stove cable that taps the line for the dryer
(not code) and there is a bad connection in it or a bad connection at the
receptacle or the receptacle is bad.
Where in Canada and how old is the house?
But they DO have 4 terminals. For the OP's information, most breakers
"stab" onto a rail for the power side and have screws for the load
side.
Still all fuses in my roughly 35 year old house.