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.