On Sun, 27 Jul 2014 19:30:16 -0400, Pat wrote:

On Sun, 27 Jul 2014 18:00:08 -0400, micky
wrote:


http://www.flotecpump.com/residentia..._faq_sump.aspx

What is wrong with this paragraph? Or is there?

Q. What is the most common cause of sump pump failure?
A. Probably the most common cause of sump pump failure is electrical in
nature. Plugging the pump into an extension cord, or an outlet that
shares a circuit breaker with other electrical items, can cause the pump
to receive low voltage. In order to run it then has to draw higher amps.
That causes the pump to run hotter. Heat is the enemy of electric motors
and can shorten the life of a pump dramatically. We recommend the pump
be plugged directly into an outlet (no extension cords) and that the
outlet be the only thing powered by the circuit breaker (or fuse) that
feeds it.

Some people just learning about electricity think of a motor as a
resistive device. Therefore, if you lower the voltage, you also lower
the current per ohm's law. As a result, those people might think the
paragraph is in error. However, there are many different types of
motors and many act like the paragraph describes.

You figured out what I was thinking of. Congratulations. You're
prize will be in the mail. I don't know what it will be, but whatever
comes in the mail you should consider to be your prize. Okay, they're
probably not wrong, but I'd have liked it better if they went into one
or two clauses more detail there, so as to not confuse me and a lot of
people.