Frank wrote: "Might be better to focus on shutting down the electric first. Then it would not matter what you used to get them out."
I completely agree, but apparently it's not a code requirement to have EPO (Emergency Power Off) disconnects on docks. Certainly not in every state, and definitely not in all states. I asked management at my "winter marina" in Florida about that, and the response I got was that they feared visitor's "playing around" would be constantly causing power loss on docks. I have seen EPO disconnects in some places, but not all that common. This does seem like a code issue, especially in fresh water locales. Individual marinas will wait until someone gets killed in their own basin. Then, their liability insurers may force them to act.
Jim
Peg and Jim Healy, living aboard Sanctuary
http://gilwellbear.wordpress.com http://gilwellbear.wordpress.com/
Monk 36 Hull #132
MMSI #367042570
AGLCA #3767
MTOA #3436
I do have an EPO in the marina I am at. If memory serves, I think all of
the major marina I moored at had something.
As it is NOT standardized per any electrical code, I think it is put there
to facilitate electrical repairs.
The one at my marina shuts down the water part, but NOT the yard part. The
yard does not have an EPO.
The marinas do NOT advertise that there is an EPO. They somehow gauge and
judge you before letting you know. People that stay the winter are more apt
to know about. Daily transiets not.
The EPO breaker is huge. It is completely manual.
Normally, at my marina, if electrical work is needed, power to the complex
is turned off, the EPO opened (you can hear the thud throughout the marina)
and then power restored.
I cannot IMAGINE what I would see / feel if that EPO had to be opened
under load.
Lee
PS: for marinas with multiple docks, there is one at the head of the pier,
in a box, closed with a lockwire, with a camera monitor. There is a red and
green buttin to push that activates relays to shutdown that dock's power.
This is what I remember at new marinas. It is has been too long that I have
stayed at an old marina where electrical power to the docks appears to be
an afterthought.