Spark plugs???? JAX your ability to introduce irrelevent and meaningless
items into a post has just hit a new high (low?), I got my information from
Nigel Calders book "boatowners mechanical and electrical manual" a very
informative book that deals with everything a boatowner needs to know to
maintain their boat.
Nigel Calder is a well known and respected yacht owner who has written
numerous books and articals over the years.
JAX, you on the other hand seem to have trouble comprehending a simple
posting, electric motors have the capability
to produce sparks, something you do not want down in the bilges if they
have a flamable mixture of gasses, they do no use "spark plugs" something I
never even said.
Even if the motor is "ignition protected" as you say, (which I agree with)
there is still a very good argument to mount it as high as possible, to keep
it clear of the gasses, to keep the wiring clear of the gasses and to
eliminate as much of the hazzard as possible.
I believe it was a Japanese aircraft carrier that was lost during the battle
of Midway when a blower was turned on in a compartment that full of gasoline
fumes.

Eric

"JAXAshby" wrote in message
...
eric, that is a crock of squat. bilge blowers are required to be
"ignition
protected" (look it up, for it has nothing to do with spark plugs at all).

"Eric Currier"
Date: 10/16/2004 1:31 AM Eastern Daylight Time
Message-id: cn2cd.73920$tU4.11401@okepread06

You mount the blower up high to keep electric motor above the expected
fumes...a blower mounted low can have the fumes seep into the electric
motor
that drives it, a blower mounted high has the motor in fresh air and only
the fumes are drawn up to the blower, and the fumes are in the fan
section
and from there they are quickly ejected overboard.

Sump pumps are mounted low (in the bilge water) to pump out water and
because they are ment to be submerged they are sealed to keep out water
and
fumes which should make them fairly explosion proof.
as far as I know there are no submergable blowers, a blower is ment to
move
air and is not ment to work underwater.

If the blower was mounted low when you turned it on you could set off the
explosion you are trying to avoid.

Blowers are mounted high to prevent explosions.

Eric

"JAXAshby" wrote in message
...
Unless the blower is sumbergable (none that I have ever seen are) you
would
want to take care to mount the blower higher than any
----------------------------- expected
----------------------------------
accumulation
of bilge water. Even unexpected amounts!

expected??? unexpected? who the hell is worried about butane in the
bilge
when expected (WTF is that???) water or unexpected water is in the
bilge?

if you intend to have water in you bilge, there is still NO need to
mount
the
blower "up high". just mount it above "expected" or likely
"unexpected"
high
water level mark.

duh.