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Posted to alt.home.repair
 
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Default Well pressure switch only shuts off one side of line

I just did some plumbing changes on my well tank. The tank is in a
cistern since there is no where else to put it (no basement). The
well is 20 feet away, the control box is in a shed about 30 feet away
(which is also the power source).

Anyhow, I discovered that who ever wired the pressure switch, only
shuts off one side of the 240V line. The other side is always ON.
It works fine, and has been this way probably since the pump was
installed in 1973 (I got the documentation when I bought the property
about 6 years ago).

Anyhow, I know this is not correct. At the same time, changing it
would require me to dig up the 30 feet of underground UF cable and
replace with 12-3 UF cable, bust a new hole in the cistern wall to run
to the wiring in the shed, and re-cement. I know, this may be hard to
understand, the system is really wired strangely, but there really is
no other way I can see to do it when the well is in one place, the
cistern in another, and the shed yet another. The underground wiring
forms a triangle between the three objects.

Either way, correcting this require a lot of work to change. Work
which I'd rather avoid. Yet seeing thid makes me a little
uncomfortable. At the same time, I know it's worked all these years
so why am I even bothering to worry.

Is there any real issues with this?
I know a lot about wiring, know the codes, and know this is wrong.
Yet, I am not sure just what problems could be caused by this???

PS. I did think of one way I could correct it without digging up all
those wires, and that would be to use the single contact on the
pressure switch to (and the wiring) to run a low voltage into the
shed, then that low voltage would trigger a hefty relay that would
switch both sides of the 240V line, and be mounted in the shed. That
would be a bit complicated and costly but sure beats digging and
breaking up concrete.

But is any of this really necessary?????

(If I was not clear, the pressure switch is only turning off ONE of
the two 240V hot wires. The same way a light switch turns off the
kitchen light, except there is always one hot wire going into the well
that is never shut off, unless I turn off the well breaker.)

Mark


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Spud
 
Posts: n/a
Default Well pressure switch only shuts off one side of line


wrote in message
...
I just did some plumbing changes on my well tank. The tank is in a
cistern since there is no where else to put it (no basement). The
well is 20 feet away, the control box is in a shed about 30 feet away
(which is also the power source).

Anyhow, I discovered that who ever wired the pressure switch, only
shuts off one side of the 240V line. The other side is always ON.
It works fine, and has been this way probably since the pump was
installed in 1973 (I got the documentation when I bought the property
about 6 years ago).

Anyhow, I know this is not correct. At the same time, changing it
would require me to dig up the 30 feet of underground UF cable and
replace with 12-3 UF cable, bust a new hole in the cistern wall to run
to the wiring in the shed, and re-cement. I know, this may be hard to
understand, the system is really wired strangely, but there really is
no other way I can see to do it when the well is in one place, the
cistern in another, and the shed yet another. The underground wiring
forms a triangle between the three objects.

Either way, correcting this require a lot of work to change. Work
which I'd rather avoid. Yet seeing thid makes me a little
uncomfortable. At the same time, I know it's worked all these years
so why am I even bothering to worry.

Is there any real issues with this?
I know a lot about wiring, know the codes, and know this is wrong.
Yet, I am not sure just what problems could be caused by this???

PS. I did think of one way I could correct it without digging up all
those wires, and that would be to use the single contact on the
pressure switch to (and the wiring) to run a low voltage into the
shed, then that low voltage would trigger a hefty relay that would
switch both sides of the 240V line, and be mounted in the shed. That
would be a bit complicated and costly but sure beats digging and
breaking up concrete.

But is any of this really necessary?????

(If I was not clear, the pressure switch is only turning off ONE of
the two 240V hot wires. The same way a light switch turns off the
kitchen light, except there is always one hot wire going into the well
that is never shut off, unless I turn off the well breaker.)

Mark


I may not follow but 12-2 is all that is needed The pump is 240
And all pressure switches I've ever seen are 2-pole switches
If its only shutting off one side replace it.IF two wires under 1 screw
easy fix. IF IT is a single pole A new pressure switch would cost
alot less about $15 for a 40/60

Spud


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John Grabowski
 
Posts: n/a
Default Well pressure switch only shuts off one side of line


wrote in message
...
I just did some plumbing changes on my well tank. The tank is in a
cistern since there is no where else to put it (no basement). The
well is 20 feet away, the control box is in a shed about 30 feet away
(which is also the power source).

Anyhow, I discovered that who ever wired the pressure switch, only
shuts off one side of the 240V line. The other side is always ON.
It works fine, and has been this way probably since the pump was
installed in 1973 (I got the documentation when I bought the property
about 6 years ago).

Anyhow, I know this is not correct. At the same time, changing it
would require me to dig up the 30 feet of underground UF cable and
replace with 12-3 UF cable, bust a new hole in the cistern wall to run
to the wiring in the shed, and re-cement. I know, this may be hard to
understand, the system is really wired strangely, but there really is
no other way I can see to do it when the well is in one place, the
cistern in another, and the shed yet another. The underground wiring
forms a triangle between the three objects.

Either way, correcting this require a lot of work to change. Work
which I'd rather avoid. Yet seeing thid makes me a little
uncomfortable. At the same time, I know it's worked all these years
so why am I even bothering to worry.

Is there any real issues with this?
I know a lot about wiring, know the codes, and know this is wrong.
Yet, I am not sure just what problems could be caused by this???

PS. I did think of one way I could correct it without digging up all
those wires, and that would be to use the single contact on the
pressure switch to (and the wiring) to run a low voltage into the
shed, then that low voltage would trigger a hefty relay that would
switch both sides of the 240V line, and be mounted in the shed. That
would be a bit complicated and costly but sure beats digging and
breaking up concrete.

But is any of this really necessary?????

(If I was not clear, the pressure switch is only turning off ONE of
the two 240V hot wires. The same way a light switch turns off the
kitchen light, except there is always one hot wire going into the well
that is never shut off, unless I turn off the well breaker.)

Mark



Just leave the wiring as it is. It is not an unusual practice to only
disconnect one side of a 220 volt line to shut something off. If you need
to work on the wiring you shut off the circuit breaker.

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RBM
 
Posts: n/a
Default Well pressure switch only shuts off one side of line

And if you are concerned about the capacity of the switch, install jumper
wires to the second pole of the switch



"John Grabowski" wrote in message
...

wrote in message
...
I just did some plumbing changes on my well tank. The tank is in a
cistern since there is no where else to put it (no basement). The
well is 20 feet away, the control box is in a shed about 30 feet away
(which is also the power source).

Anyhow, I discovered that who ever wired the pressure switch, only
shuts off one side of the 240V line. The other side is always ON.
It works fine, and has been this way probably since the pump was
installed in 1973 (I got the documentation when I bought the property
about 6 years ago).

Anyhow, I know this is not correct. At the same time, changing it
would require me to dig up the 30 feet of underground UF cable and
replace with 12-3 UF cable, bust a new hole in the cistern wall to run
to the wiring in the shed, and re-cement. I know, this may be hard to
understand, the system is really wired strangely, but there really is
no other way I can see to do it when the well is in one place, the
cistern in another, and the shed yet another. The underground wiring
forms a triangle between the three objects.

Either way, correcting this require a lot of work to change. Work
which I'd rather avoid. Yet seeing thid makes me a little
uncomfortable. At the same time, I know it's worked all these years
so why am I even bothering to worry.

Is there any real issues with this?
I know a lot about wiring, know the codes, and know this is wrong.
Yet, I am not sure just what problems could be caused by this???

PS. I did think of one way I could correct it without digging up all
those wires, and that would be to use the single contact on the
pressure switch to (and the wiring) to run a low voltage into the
shed, then that low voltage would trigger a hefty relay that would
switch both sides of the 240V line, and be mounted in the shed. That
would be a bit complicated and costly but sure beats digging and
breaking up concrete.

But is any of this really necessary?????

(If I was not clear, the pressure switch is only turning off ONE of
the two 240V hot wires. The same way a light switch turns off the
kitchen light, except there is always one hot wire going into the well
that is never shut off, unless I turn off the well breaker.)

Mark



Just leave the wiring as it is. It is not an unusual practice to only
disconnect one side of a 220 volt line to shut something off. If you need
to work on the wiring you shut off the circuit breaker.



  #5   Report Post  
Posted to alt.home.repair
Jeff Wisnia
 
Posts: n/a
Default Well pressure switch only shuts off one side of line

wrote:

I just did some plumbing changes on my well tank. The tank is in a
cistern since there is no where else to put it (no basement). The
well is 20 feet away, the control box is in a shed about 30 feet away
(which is also the power source).

Anyhow, I discovered that who ever wired the pressure switch, only
shuts off one side of the 240V line. The other side is always ON.
It works fine, and has been this way probably since the pump was
installed in 1973 (I got the documentation when I bought the property
about 6 years ago).

Anyhow, I know this is not correct. At the same time, changing it
would require me to dig up the 30 feet of underground UF cable and
replace with 12-3 UF cable, bust a new hole in the cistern wall to run
to the wiring in the shed, and re-cement. I know, this may be hard to
understand, the system is really wired strangely, but there really is
no other way I can see to do it when the well is in one place, the
cistern in another, and the shed yet another. The underground wiring
forms a triangle between the three objects.

Either way, correcting this require a lot of work to change. Work
which I'd rather avoid. Yet seeing thid makes me a little
uncomfortable. At the same time, I know it's worked all these years
so why am I even bothering to worry.

Is there any real issues with this?
I know a lot about wiring, know the codes, and know this is wrong.
Yet, I am not sure just what problems could be caused by this???


I'm no code mavin, but the only examples of switching just one side of a
230 volt circuit I can think of is when the "switch" is contained within
the device being powered, as the thermostats in electric water heaters.


PS. I did think of one way I could correct it without digging up all
those wires, and that would be to use the single contact on the
pressure switch to (and the wiring) to run a low voltage into the
shed, then that low voltage would trigger a hefty relay that would
switch both sides of the 240V line, and be mounted in the shed. That
would be a bit complicated and costly but sure beats digging and
breaking up concrete.


I like that idea, but it wouldn't *have* to be "low voltage", Mark.

If there's a neutral in the shed, (And I sure hope there is.) then you
could run one side of the 240 (i.e. 120 vac to neutral) out and back to
the pressure switch and then all you'd need is a double pose-single
throw relay with a 120 vac coil to switch both sides of the 240 volt
power going out to the pump.

Since your talking 12-3 wire that says to me that the motor running
current is less than 20 amps, so the relay wouldn't have be a monster,
just get one rated for "motor starting", for the size of your pump motor.

Those relays aren't very costly, and since you're concerned enough to be
asking about it, you may not sleep well unless you change it over, I'd
go for it.

Searching eBay for "motor starter" (using an exact term search.) brings
up lots which would work, like this one:

http://tinyurl.com/7azjf

You'd just use two of the three poles of course.



But is any of this really necessary?????



Only your local electrical inspector can tell you that. G


Jeff

--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"Truth exists; only falsehood has to be invented."


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Posted to alt.home.repair
 
Posts: n/a
Default Well pressure switch only shuts off one side of line

On Sun, 27 Nov 2005 07:34:09 -0500, "Spud" wrote:


wrote in message
.. .
I just did some plumbing changes on my well tank. The tank is in a
cistern since there is no where else to put it (no basement). The
well is 20 feet away, the control box is in a shed about 30 feet away
(which is also the power source).

Anyhow, I discovered that who ever wired the pressure switch, only
shuts off one side of the 240V line. The other side is always ON.
It works fine, and has been this way probably since the pump was
installed in 1973 (I got the documentation when I bought the property
about 6 years ago).

Anyhow, I know this is not correct. At the same time, changing it
would require me to dig up the 30 feet of underground UF cable and
replace with 12-3 UF cable, bust a new hole in the cistern wall to run
to the wiring in the shed, and re-cement. I know, this may be hard to
understand, the system is really wired strangely, but there really is
no other way I can see to do it when the well is in one place, the
cistern in another, and the shed yet another. The underground wiring
forms a triangle between the three objects.

Either way, correcting this require a lot of work to change. Work
which I'd rather avoid. Yet seeing thid makes me a little
uncomfortable. At the same time, I know it's worked all these years
so why am I even bothering to worry.

Is there any real issues with this?
I know a lot about wiring, know the codes, and know this is wrong.
Yet, I am not sure just what problems could be caused by this???

PS. I did think of one way I could correct it without digging up all
those wires, and that would be to use the single contact on the
pressure switch to (and the wiring) to run a low voltage into the
shed, then that low voltage would trigger a hefty relay that would
switch both sides of the 240V line, and be mounted in the shed. That
would be a bit complicated and costly but sure beats digging and
breaking up concrete.

But is any of this really necessary?????

(If I was not clear, the pressure switch is only turning off ONE of
the two 240V hot wires. The same way a light switch turns off the
kitchen light, except there is always one hot wire going into the well
that is never shut off, unless I turn off the well breaker.)

Mark


I may not follow but 12-2 is all that is needed The pump is 240
And all pressure switches I've ever seen are 2-pole switches
If its only shutting off one side replace it.IF two wires under 1 screw
easy fix. IF IT is a single pole A new pressure switch would cost
alot less about $15 for a 40/60

Spud


Yes, it's 12-2
The pressure switch HAS two poles.
Only one is being used.
I was wrong when I said I would need to change to 12-3.
What I would need is 12-4 (no such thing), so I would need TWO 12-2
cables going from the shed to the cistern.

To explain exactly what I now have.
The 12-2 cable goes underground from the shed to the cistern. One
wire carries the power OUT to the pressure sw. The other carries the
SWITCHED power back IN.

To switch BOTH sides, I'd need another 12-2 (another IN and another
OUT wire.

If this did not require digging and busting out concrete, it would be
simple. Just add another 12-2 cable. It's all the digging and
breaking out the wall of that cistern that makes it a major job.

(I wish they would have used conduit, then I could have just shoved
another cable thru.)

I think I'll just leave it !!!!

Thanks to all who replied...............

Mark


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Spud
 
Posts: n/a
Default Well pressure switch only shuts off one side of line


wrote in message
...
On Sun, 27 Nov 2005 07:34:09 -0500, "Spud" wrote:


wrote in message
.. .



Yes, it's 12-2
The pressure switch HAS two poles.
Only one is being used.
I was wrong when I said I would need to change to 12-3.
What I would need is 12-4 (no such thing), so I would need TWO 12-2
cables going from the shed to the cistern.

To explain exactly what I now have.
The 12-2 cable goes underground from the shed to the cistern. One
wire carries the power OUT to the pressure sw. The other carries the
SWITCHED power back IN.

To switch BOTH sides, I'd need another 12-2 (another IN and another
OUT wire.

If this did not require digging and busting out concrete, it would be
simple. Just add another 12-2 cable. It's all the digging and
breaking out the wall of that cistern that makes it a major job.

(I wish they would have used conduit, then I could have just shoved
another cable thru.)

I think I'll just leave it !!!!

Thanks to all who replied...............

Mark

Its just wired wrong you DO not need 12-4
The wire coming in goes to the two outside screws
The wire to the pump goes on the other two screws
4 screws 4 wires two in two out to the pump
BOTH WIRES carries the power OUT there is no neutral
on a 230 pump ground yes

Spud


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Spud
 
Posts: n/a
Default Well pressure switch only shuts off one side of line


"Jeff Wisnia" wrote in message
...

If there's a neutral in the shed, (And I sure hope there is.) then you
could run one side of the 240 (i.e. 120 vac to neutral) out and back to
the pressure switch and then all you'd need is a double pose-single
throw relay with a 120 vac coil to switch both sides of the 240 volt
power going out to the pump.


Why whats the neutral for and where on the pump do you connect this
120 not needed or used so run the wire then wire nut it at the pump??

Since your talking 12-3 wire that says to me that the motor running
current is less than 20 amps, so the relay wouldn't have be a monster,
just get one rated for "motor starting", for the size of your pump motor.

Those relays aren't very costly, and since you're concerned enough to be
asking about it, you may not sleep well unless you change it over, I'd
go for it.

Searching eBay for "motor starter" (using an exact term search.) brings
up lots which would work, like this one:

http://tinyurl.com/7azjf

You'd just use two of the three poles of course.


Or this
http://cgi.ebay.com/NEW-30-50-SQUARE... cmdZViewItem

But is any of this really necessary?????

Yes
Only your local electrical inspector can tell you that. G


Jeff

--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"Truth exists; only falsehood has to be invented."



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volts500
 
Posts: n/a
Default Well pressure switch only shuts off one side of line

wrote:

Anyhow, I discovered that who ever wired the pressure switch, only
shuts off one side of the 240V line. The other side is always ON.
It works fine, and has been this way probably since the pump was
installed in 1973 (I got the documentation when I bought the property
about 6 years ago).


Anyhow, I know this is not correct


How do you know that? The circuit breaker in the shed is the
disconnect. The pressure switch is the controller.

Quote from NEC (2002) Section 430.84 (Need Not Open All Conductors.):

"The controller shall not be required to open all conductors to the
motor."

"Exception: Where the controller serves also as a disconnecting means,
it shall open all ungrounded conductors to the motor..."

Again, the pressure switch is not being used as the disconnecting means
in this case.

There is nothing wrong with the way it is. It's not an uncommon
practice.

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Posted to alt.home.repair
Jeff Wisnia
 
Posts: n/a
Default Well pressure switch only shuts off one side of line

Spud wrote:

"Jeff Wisnia" wrote in message
...


If there's a neutral in the shed, (And I sure hope there is.) then you
could run one side of the 240 (i.e. 120 vac to neutral) out and back to
the pressure switch and then all you'd need is a double pose-single
throw relay with a 120 vac coil to switch both sides of the 240 volt
power going out to the pump.



Why whats the neutral for and where on the pump do you connect this
120 not needed or used so run the wire then wire nut it at the pump??



One end of the 120 volt relay coil (located in the shed) would connect
to neutral. The other end of that coil would receive 120 volts (from one
side of the 240 volt supply) controlled by the pressure switch. If
there's no neutral in the shed, then you couldn't use that scheme.


Since your talking 12-3 wire that says to me that the motor running
current is less than 20 amps, so the relay wouldn't have be a monster,
just get one rated for "motor starting", for the size of your pump motor.

Those relays aren't very costly, and since you're concerned enough to be
asking about it, you may not sleep well unless you change it over, I'd
go for it.

Searching eBay for "motor starter" (using an exact term search.) brings
up lots which would work, like this one:

http://tinyurl.com/7azjf

You'd just use two of the three poles of course.



Or this
http://cgi.ebay.com/NEW-30-50-SQUARE... cmdZViewItem

He's already GOT a pressure switch, why are you suggesting another one?



--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"Truth exists; only falsehood has to be invented."


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TURTLE
 
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Default Well pressure switch only shuts off one side of line

This is Turtle.

Breaking one service line to 220 volt service is done all the time. If
you break one you break both in this case.

TURTLE

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Posted to alt.home.repair
 
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Default Well pressure switch only shuts off one side of line

On Sun, 27 Nov 2005 19:00:00 -0500, "Spud" wrote:


wrote in message
.. .
On Sun, 27 Nov 2005 07:34:09 -0500, "Spud" wrote:


wrote in message
.. .



Yes, it's 12-2
The pressure switch HAS two poles.
Only one is being used.
I was wrong when I said I would need to change to 12-3.
What I would need is 12-4 (no such thing), so I would need TWO 12-2
cables going from the shed to the cistern.

To explain exactly what I now have.
The 12-2 cable goes underground from the shed to the cistern. One
wire carries the power OUT to the pressure sw. The other carries the
SWITCHED power back IN.

To switch BOTH sides, I'd need another 12-2 (another IN and another
OUT wire.

If this did not require digging and busting out concrete, it would be
simple. Just add another 12-2 cable. It's all the digging and
breaking out the wall of that cistern that makes it a major job.

(I wish they would have used conduit, then I could have just shoved
another cable thru.)

I think I'll just leave it !!!!

Thanks to all who replied...............

Mark

Its just wired wrong you DO not need 12-4
The wire coming in goes to the two outside screws
The wire to the pump goes on the other two screws
4 screws 4 wires two in two out to the pump
BOTH WIRES carries the power OUT there is no neutral
on a 230 pump ground yes

Spud



Ummmmmmmmmm......
Yes, I need FOUR wires...
That WOULD be 12-4 (or two 12-2 cables).
Two IN, (from the shed) Two OUT (returns to the shed because thats
where the pump control box is) Then it goes back outside and to the
well.

You're right about no neutral.

I'd only need one of the ground wires, but I'd twist them together
anyhow.

Mark

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Posted to alt.home.repair
 
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Default Well pressure switch only shuts off one side of line

On Sun, 27 Nov 2005 19:18:09 -0500, "Spud" wrote:


"Jeff Wisnia" wrote in message
...

If there's a neutral in the shed, (And I sure hope there is.) then you
could run one side of the 240 (i.e. 120 vac to neutral) out and back to
the pressure switch and then all you'd need is a double pose-single
throw relay with a 120 vac coil to switch both sides of the 240 volt
power going out to the pump.


Why whats the neutral for and where on the pump do you connect this
120 not needed or used so run the wire then wire nut it at the pump??


He was saying to use the neutral to operate a 120V relay. The pump
does not need a neutral.
  #14   Report Post  
Posted to alt.home.repair
 
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Default Well pressure switch only shuts off one side of line

On 27 Nov 2005 17:02:45 -0800, "volts500" wrote:

wrote:

Anyhow, I discovered that who ever wired the pressure switch, only
shuts off one side of the 240V line. The other side is always ON.
It works fine, and has been this way probably since the pump was
installed in 1973 (I got the documentation when I bought the property
about 6 years ago).


Anyhow, I know this is not correct


How do you know that? The circuit breaker in the shed is the
disconnect. The pressure switch is the controller.

Quote from NEC (2002) Section 430.84 (Need Not Open All Conductors.):

"The controller shall not be required to open all conductors to the
motor."

"Exception: Where the controller serves also as a disconnecting means,
it shall open all ungrounded conductors to the motor..."

Again, the pressure switch is not being used as the disconnecting means
in this case.

There is nothing wrong with the way it is. It's not an uncommon
practice.


OK, if it's listed that way in the code, thats even better. Somehow I
thought it was required, even though it works the way it is.
In that case, I got one less job to do. I like that !!!!

Thanks

Mark

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