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Scary Sunday Morning- long

Posted: Mon Mar 23, 2009 10:00 am
by Stripermann2
Got to the boat on Saturday afternoon and replaced a section of fresh water line that had rubbed through some wood under the cockpit, all systems go...settled in for a nice weekend with my wife and yellow lab.

Fell asleep on the couch watching a movie and ended back in the v-birth around 5 am. Thought I smelled something heating up and took a quick look around, found nothing suspicious and settled back to drift off to sleep.

Thirty minutes later my wife screams, the boats on fire!!!!!!!!!!! (the worst nightmare any boater can think of) We both immediately jumped up and out of the v-birth and sure enough, I had an electrical fire below the front bilge access panel. I immedately told her to disconnect all power to the boat and I shut down all DC breakers. I then pulled back the carpet and for those who have the same set-up, there is a finger hole which to pull up the panel of wood. I could see flames just below. I got a fire extinguisher ( I keep more than six onboard and handy ) and aimed in the finger hole and extinguished the flames. Whew... :roll: By the way, discharging an extinguisher in close quarters will suck the surrounding air of oxygen and leave you breathless and gasping for air!

The forward bilge pump locked up and overheated the wiring, fusing power and ground and causing the fire. The wiring was damaged to about 15 inches before it was put out. Slight scorching of the hatch and under carpet but no real damage, surprised it didn't go up in a big ball of flame.

The pump had had come loose from it's strainer and sometime over the past week or so, must have pickup some debris and jammed the impeller. Remember now... I had a water leak in the fresh water line and water would run to the front, cycling the front bilge pump...

I gutted the damaged wiring, repaired it and bought a new pump and float switch and all is now good. :D

Interesting note: I couldn't understand why the breaker didn't shut off power in this circumstance. I discovered that the wiring did not have an inline fuse between supply power and float switch. This systems uses two power feeds, one constant from main bilge breakers for automatic pump activation, via float switch and the other for manually activating pump. The individual breaker/switch's will trip but unless there is fuse protection in automatic mode, the breakers may NOT trip!! I rewired the float switch with an inline fuse, as should be.

Had we not be down there this weekend, we could have had a disaster, our boat and possibly others as well. Plus we keep our beloved dog on board when we are in the restaurant or in town running errands. The thought of devastation really hits home guys!

Please, please take the time to insure that you have checked and double check everything. Leave nothing to chance!!! It's easy to get excited about springtime boating and launching but all that can be lost in just a few minutes! Also, please put up some smoke detectors!!!! I did not have one. But I will have at least two now!! And fire extinguishers are cheap, keep up to date and handy.

Sorry for the long report but if this refreshes and instills being careful and diligent this boating season, it's well worth this read.

Thanks.

Posted: Mon Mar 23, 2009 10:15 am
by gjrylands
Your right about fire on a boat. The only thing worse then a fire on a boat is a fire on a boat while underway.

I'm glad to hear that all is well.

Posted: Mon Mar 23, 2009 11:40 am
by rick1954
OMG Good thing you were on board to catch the fire early, otherwise you may not have a boat at this point. This is absolutely worth the read .
Everyone please be safe and have a good season.

Posted: Mon Mar 23, 2009 11:56 am
by 1967 seavoyager
I had a short in my stove & had flames at 4am. Scary stuff !

Posted: Mon Mar 23, 2009 12:36 pm
by Mac32
I had a similar indecent with the bilge pump and it melted the feed wire back to the house battery. What I noticed was the factory has the bilge pump wired in front of the dc breakers (ie directly to the battery but coming off the terminal on the back of the dc main) so when you turn off the dc mains the bilge pump stays active.

I did see what looks to be a factory auto resettable inline breaker (30 or 40 amp I think) down in the bilge that I figured being the culprit of not tripping properly. It was in-line for all my house power.

This is what it looked like
http://www.lesscoelectronics.com/Auto_R ... reaker.htm

or this
http://cgi.ebay.com/ebaymotors/5-ShortS ... 0007r28204

I also noticed you can get these at a auto supply store for trailer brakes.

The only thing that I thought might make it the original was that it was dipped in a coating to water proof it after it was wired. But I did not find it on my wiring schematic?????
:(

Posted: Mon Mar 23, 2009 3:07 pm
by LSP
Wow Jamie ... tough experience I'm sure. I glad to hear that you / your wife / the pup /and your Trojan came away in good shape. Thanks for sharing the situation. Take care....

co2 extinguisher

Posted: Mon Mar 23, 2009 6:26 pm
by capt ralph
it was as smart thing to shut you source of fire down,that was the proper thing to do.but you should nerver discharge a co2 in an enclosed area,due to the fact that co2 replaces the oxygen and can cause suffication.thank god you guys were ok,

Posted: Mon Mar 23, 2009 7:36 pm
by jddens
Whew......talk about a rude awakening!!...glad it all worked out, man you musta been pumping some serious adrenalin! My worst fear is fire on the boat......had trouble sleeping before.....now it will be a lost cause......thanks for reminding us all.....think I'll lift some floor panels this weekend and check those pumps.........John

Posted: Wed Mar 25, 2009 10:33 am
by randyp
Glad it turned out ok with minimal damage. The in-line fuse advice is a life-saver!