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