Hi.
I need some help w/ this. I just bought a Campbell housfeld stationary
upright air compressor w/ a 240 volt, capacitor start 15 amp motor. The
unit came unwired. The owners manual shows a wiring diagram w/ two
sides of the pressure switch; one side shows two terminals wired to the
motor; if you lift the pressure switch cover you will see a black wire
and a white wire running from these terminals to the motor.
The other side of the pressure switch from those teminals (the two
empty ones to which wiring connects from the users sub panel) -the
wiring diagram indicates that there is a 120 volt line which attatches
to each of these empty terminals. (240 volts total). As one of the
wires going to the motor is white, I emailed campbel Housfelds tech
line and asked them if they had mistakenly wired the motor for 120 volt
instead of 240 volt? I also asked them if this unit utilizes a "neutral"
wire in addition to two hot wires and the ground (ground being shown in
diagram in manual, but no neutral connection shown). There reply was,
Quote:

"Our Solution :

The answer to your issue is that the white and black wire coming from
your motor is your 2 hot wires. The white wire and your neutral wire
coming from your service panel will be put under the green screw on the
base of the pressure switch".

Thank You
Thank you for using our system.

Question: Is this a correct solution? I thought that linking a
neutral wire as the ground or to the ground was an "old school"
outdated and unsafe practice.
Should this unit just run two hot leads to the pressure switch and a
ground, as shown in the wiring diagram in the manual? Shouldnt the two
hot leads running to the motor be colored black and red, and not black
and white? (white indicating a neutral, and not "hot" connection). Is a
neutral necessary for the circuit to function? If so, I would not think
that the techies at Campbell Housfeld would be telling me to link a
neutral wire to the ground wire at the compressor. But wouldnt' this be
unsafe? (linking neutral and ground at the compressor?).
Any help on this would be greatly appreciated, thanx, J.B.


--
James Blais
------------------------------------------------------------------------
James Blais's Profile: http://www.homeplot.com/member.php?userid=70
View this thread: http://www.homeplot.com/showthread.php?t=57624

In article ,
James Blais wrote:

Hi.
I need some help w/ this. I just bought a Campbell housfeld stationary
upright air compressor w/ a 240 volt, capacitor start 15 amp motor. The
unit came unwired. The owners manual shows a wiring diagram w/ two
sides of the pressure switch; one side shows two terminals wired to the
motor; if you lift the pressure switch cover you will see a black wire
and a white wire running from these terminals to the motor.
The other side of the pressure switch from those teminals (the two
empty ones to which wiring connects from the users sub panel) -the
wiring diagram indicates that there is a 120 volt line which attatches
to each of these empty terminals. (240 volts total). As one of the
wires going to the motor is white, I emailed campbel Housfelds tech
line and asked them if they had mistakenly wired the motor for 120 volt
instead of 240 volt? I also asked them if this unit utilizes a "neutral"
wire in addition to two hot wires and the ground (ground being shown in
diagram in manual, but no neutral connection shown). There reply was,
Quote:

"Our Solution :

The answer to your issue is that the white and black wire coming from
your motor is your 2 hot wires. The white wire and your neutral wire
coming from your service panel will be put under the green screw on the
base of the pressure switch".

Thank You
Thank you for using our system.

Question: Is this a correct solution? I thought that linking a
neutral wire as the ground or to the ground was an "old school"
outdated and unsafe practice.

It is.

Make sure the motor nameplate rating is in fact 240 volts, and wire
it according to the wiring diagram. Ignore the fact that they used a
white wire inside the motor.

I suspect that the motor can be strapped internally for 120 or 240 volts,
and that is why one of the wires is white. In this case, if the motor is
wired for 240, the white becomes a hot.

Connect the two hot wires, and the ground, and leave the neutral disconnected.
For the wire from your subpanel, use black and red.


Should this unit just run two hot leads to the pressure switch and a
ground, as shown in the wiring diagram in the manual? Shouldnt the two
hot leads running to the motor be colored black and red, and not black
and white? (white indicating a neutral, and not "hot" connection). Is a
neutral necessary for the circuit to function? If so, I would not think
that the techies at Campbell Housfeld would be telling me to link a
neutral wire to the ground wire at the compressor. But wouldnt' this be
unsafe? (linking neutral and ground at the compressor?).
Any help on this would be greatly appreciated, thanx, J.B.


--
James Blais
------------------------------------------------------------------------
James Blais's Profile: http://www.homeplot.com/member.php?userid=70
View this thread: http://www.homeplot.com/showthread.php?t=57624



--
-- Welcome My Son, Welcome To The Machine --
Bob Vaughan | techie @ tantivy.net |
| P.O. Box 19792, Stanford, Ca 94309 |
-- I am Me, I am only Me, And no one else is Me, What could be simpler? --

It sounds like you're over complicating this. Forget about wire colors as
usually a two wire cord or cable uses a black and a white. You need three
wires from your power supply: two hots (240) which go on the pressure switch
and a ground, which goes on the ground terminal. Just be sure that they are
large enough to carry the amperage of the compressor



"James Blais" wrote in message
...

Hi.
I need some help w/ this. I just bought a Campbell housfeld stationary
upright air compressor w/ a 240 volt, capacitor start 15 amp motor. The
unit came unwired. The owners manual shows a wiring diagram w/ two
sides of the pressure switch; one side shows two terminals wired to the
motor; if you lift the pressure switch cover you will see a black wire
and a white wire running from these terminals to the motor.
The other side of the pressure switch from those teminals (the two
empty ones to which wiring connects from the users sub panel) -the
wiring diagram indicates that there is a 120 volt line which attatches
to each of these empty terminals. (240 volts total). As one of the
wires going to the motor is white, I emailed campbel Housfelds tech
line and asked them if they had mistakenly wired the motor for 120 volt
instead of 240 volt? I also asked them if this unit utilizes a "neutral"
wire in addition to two hot wires and the ground (ground being shown in
diagram in manual, but no neutral connection shown). There reply was,
Quote:

"Our Solution :

The answer to your issue is that the white and black wire coming from
your motor is your 2 hot wires. The white wire and your neutral wire
coming from your service panel will be put under the green screw on the
base of the pressure switch".

Thank You
Thank you for using our system.

Question: Is this a correct solution? I thought that linking a
neutral wire as the ground or to the ground was an "old school"
outdated and unsafe practice.
Should this unit just run two hot leads to the pressure switch and a
ground, as shown in the wiring diagram in the manual? Shouldnt the two
hot leads running to the motor be colored black and red, and not black
and white? (white indicating a neutral, and not "hot" connection). Is a
neutral necessary for the circuit to function? If so, I would not think
that the techies at Campbell Housfeld would be telling me to link a
neutral wire to the ground wire at the compressor. But wouldnt' this be
unsafe? (linking neutral and ground at the compressor?).
Any help on this would be greatly appreciated, thanx, J.B.


--
James Blais
------------------------------------------------------------------------
James Blais's Profile: http://www.homeplot.com/member.php?userid=70
View this thread: http://www.homeplot.com/showthread.php?t=57624

thank you!
James.


--
James Blais
------------------------------------------------------------------------
James Blais's Profile: http://www.homeplot.com/member.php?userid=70
View this thread: http://www.homeplot.com/showthread.php?t=57624

Sure would HELP to know what you're saying "thank you!" to!

On Fri, 26 Aug 2005 09:07:57 -0400, James Blais
wrote:


thank you!
James.


--
James Blais
------------------------------------------------------------------------
James Blais's Profile: http://www.homeplot.com/member.php?userid=70
View this thread: http://www.homeplot.com/showthread.php?t=57624