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Re: [PSUBS-MAILIST] Bilge pump thrusters



Vance,
 
Thanks for the HEADS UP concerning salt water before I END UP with HAIR UP or WORSE! 
 
Water is a conductor and salt water is a much better conductor, of course, but so far the only time I had any in the sub was once when I surfaced to find it raining.  By the time we got it loaded on the trailer it was a bit wet inside but not much.  Rain, and or condensation, has been the limit of my experience with water inside, so far. 
 
You do make a good point. I should have something sealed in plastic and dry to pull the plugs with just in case I end up in an emergency situation with some sea water in the sub.  My disconnects are in the upper third of the hull but they could get splashed. 
 
It must be a real shocking experience, and I mean it literally, to have a flood of sea water sloshing around inside a stranded sub.  I wonder if a good precaution before ever trying to exit a sub in an emergency wouldn't be to first run the batteries down, if they aren't already.  Vance, is this part of any emergency plan you've encountered?
 
On the K-350 electrical print I have, the captain shows the fuses in the battery pods.  That's where I have mine also.  I realize if a pod has hydrogen in it, the blowing of a fuse will be the igniter but I thought that would be better then the any smoke or fumes in the air I need to breath until I can get out.  If a pod blows it will blow off the end cap and shake things up a little.  The captain told me he had one blow but I don't know the reason.  He surfaced replaced the batteries and cap, and lived to dive again.  The first defense is keep the sea water and hydrogen out of the sub. 
 
When I started my sub I really didn't know much about marine wiring.  I was more familiar with house hold and automotive wiring and also more concerned with quick access to things rather then making then water tight.  As always, I see things that I'd do different the second time around, but I'd still keep the disconnects. 
 
Thanks, Dan H.
 
 
----- Original Message -----
Sent: Sunday, December 12, 2004 8:23 PM
Subject: Re: [PSUBS-MAILIST] Bilge pump thrusters

Dan,
 
Here's some more food for thought--salt water and "yanking" plugs. It'll stand your hair on end, and that's if you're lucky. Captain George used to use a big paper wrapped fuse for the 36v system which you'd snap out using plastic pliers. That ain't much better in my opinion. My sub has a string of breakers rated for the service, under rubber boots, more or less completely isolated from the internal atmosphere to lessen the opportunity for any short term passion between hydrogen and oxygen. It's a simple solution, put 'em in a box, switch 'em on, go diving. Easy.
 
Vance