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Default Two fuses blow together but not seperately

I replaced four regular power receptacles this afternoon. Some on one
circuit some on another. There was one receptacle that had a red wire.
I wired the receptacle like the one that was there before. Black and
red on the same side opposite white. When I searched this group I see
the red is a switched power source. My problem now is a can't turn on
both circuits at once or they both blow. The funny thing is all
receptacles have power! That is very strange. Could the wires be
crossed giving power to the other circuit some how?

Thanks,
Tom

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Default Two fuses blow together but not seperately

Is that one in a kitchen or used for some other high wattage appliances? It
sounds like a split circuit. It works similar to a switched receptacle but
it is supplied with a 120/240 volt circuit, if you have the old receptacle
you will see a brass jumper between the two brass screws was broken away
separating the outlets on the receptacle. This is done to provide a switched
outlet and an unswitched outlet. However, yours don't seem to be switched
but a split circuit. What you are doing is creating a 240 volt short circuit
that would blow both fuses. Turn off the power and remove the break-away
jumper on the brass coloured screw side. Leave the jumper on the white screw
side.

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ups.com...
I replaced four regular power receptacles this afternoon. Some on one
circuit some on another. There was one receptacle that had a red wire.
I wired the receptacle like the one that was there before. Black and
red on the same side opposite white. When I searched this group I see
the red is a switched power source. My problem now is a can't turn on
both circuits at once or they both blow. The funny thing is all
receptacles have power! That is very strange. Could the wires be
crossed giving power to the other circuit some how?

Thanks,
Tom



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Default Two fuses blow together but not seperately


Greg Guarino wrote:
On 10 Sep 2006 16:26:38 -0700, wrote:

I replaced four regular power receptacles this afternoon. Some on one
circuit some on another. There was one receptacle that had a red wire.
I wired the receptacle like the one that was there before. Black and
red on the same side opposite white. When I searched this group I see
the red is a switched power source.


Red doesn't have to be a switched line.

My problem now is a can't turn on
both circuits at once or they both blow. The funny thing is all
receptacles have power! That is very strange. Could the wires be
crossed giving power to the other circuit some how?


It sounds like the red and black are two hots on different phases. If
so, and assuming you're in the USA, you created a dead short with a
potential of 220 volts. That's bad.

You could get a meter and figure this out, but I'm reluctant to tell
you how if you don't know. It might be better to get an electrician.

Greg Guarino


This sounds like the most likely scenario.

Your house has two hot lines coming in. Both are 110 volts but are on
opposite cycles. Some things like electric heat, electric dryers and
electric stoves are designed to use both lines. For those appliances,
each line basically grounds the other.

You probably have a switch recepticle that is typical for a lamp that
is switched. In on older house, it might just be wired on and covered
up long ago. But it's probably there.

So without removing the tab, you are creating a dead short on that side
of the recepticle where the two wires are connected. That's why both
breakers are blowing -- which is a very, very good thing. If they had
been on the same phase, you'd probably be worse off in the long run
because you'd effectively have to go twice as high before you tripped
one and it might have caused a fire. So if this is the case, consider
yourself lucky.

There are two very simple tests to do. First off, if any lamps were
switched, turn the switch the other direct and see what happens.
Basically, nothing should happen except the lights should work okay and
not blow anything. (Caution, don't have anything else except lights on
the circuit. The other test is to turn on 1 breaker. Everything
should work okay. That lets you know if the scenario is true. If ALL
lights and ALL recepticles work, then you know you have a problem.

Assuming this is the case, both breakers should have tripped basically
as soon as you threw the second breaker. It shouldn't take any time
when you did it.

Just out of curiosity, if this isn't the case, are there any GFIs on
either circuit?

Good luck with it.

In the US it is getting late. Shut both down and check to make sure
all is dead before you go to sleep. Then double check your work in the
morning.

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Default Two fuses blow together but not seperately

I capped off the red wire and all works fine now. I didn't break the
tab on the red wire screw. Is there a problem just leaving that just
capped off?

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Default Two fuses blow together but not seperately

A couple of more questions before anyone can say if all is okay.

First, look inside the box. Do the red lead and the black lead come
from the same wire or separate wires? This is very important.

Second, go look at the breakers that trip together. Are they
side-by-side? Do they have a little metal wire connecting the switch
part. Some breakers have a small hole in the handle that you touch.
Then there is a small wire going from that breaker to the one next to
physically connect them so they have to go off together. Are your
breakers like that? Is it possible to turn off one and not the other?
Go try it.

wrote:
I capped off the red wire and all works fine now. I didn't break the
tab on the red wire screw. Is there a problem just leaving that just
capped off?


Depending on the answers to the above questions, maybe yes and maybe
no.

In the mean time, disconnect the black and reconnect the red. I would
imagine everything works fine that way, too. We need to know that.

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Default Two fuses blow together but not seperately

Pat wrote:
A couple of more questions before anyone can say if all is okay.

First, look inside the box. Do the red lead and the black lead come
from the same wire or separate wires? This is very important.


Separate wires. In the box there are three romex cables coming in two
with white, black, and ground. The third has all three plus the red
wire. All three blacks are taped together to give one black that goes
to the receptacle.
..
Second, go look at the breakers that trip together. Are they
side-by-side?


Yes there is one on top of the other.

Do they have a little metal wire connecting the switch
part. Some breakers have a small hole in the handle that you touch.
Then there is a small wire going from that breaker to the one next to
physically connect them so they have to go off together. Are your
breakers like that?


Do I need to take the cover off to see this wire?


Is it possible to turn off one and not the other?


I can turn them off seperately.

Go try it.

wrote:
I capped off the red wire and all works fine now. I didn't break the
tab on the red wire screw. Is there a problem just leaving that just
capped off?


Depending on the answers to the above questions, maybe yes and maybe
no.

In the mean time, disconnect the black and reconnect the red. I would
imagine everything works fine that way, too. We need to know that.


Yes I did reconnect red and disconnect black and everything works fine.

Should I just clip the tab and reconnect both?

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