Bilge Fire Today - thoughts on cause?
#31
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Joined: Aug 2019
Posts: 1,249
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From: BC
That's one of the major issues with the elec raised hatch system...getting them open during a fire.
Even a strategically place emergency cabled pin to unlatch may get destroyed by the fire.
Wires that have poor contact, with resistance, will heat up. If it's not enough to trip a breaker, and more than the thermal conduction/convection, you 'll eventually get a thermal runaway.
It just turns into a heater.
Even a strategically place emergency cabled pin to unlatch may get destroyed by the fire.
Wires that have poor contact, with resistance, will heat up. If it's not enough to trip a breaker, and more than the thermal conduction/convection, you 'll eventually get a thermal runaway.
It just turns into a heater.
#32
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Joined: Feb 2013
Posts: 1,462
Likes: 392
That's one of the major issues with the elec raised hatch system...getting them open during a fire.
Even a strategically place emergency cabled pin to unlatch may get destroyed by the fire.
Wires that have poor contact, with resistance, will heat up. If it's not enough to trip a breaker, and more than the thermal conduction/convection, you 'll eventually get a thermal runaway.
It just turns into a heater.
Even a strategically place emergency cabled pin to unlatch may get destroyed by the fire.
Wires that have poor contact, with resistance, will heat up. If it's not enough to trip a breaker, and more than the thermal conduction/convection, you 'll eventually get a thermal runaway.
It just turns into a heater.
Thought abt this too. Seems like a remote mounted co2 (or ABC) extinguisher with a hose attached and running into the bilge would be pretty effective in a semi-sealed environment. Saw a video the other night abt EV fires on car hauling ships. They seal off the deck and flood it with co2. That's works well for most fires (but unfortunately not for EVs).
My experience with loose connections and heat has been that the heat typically remains localized and doesn't heat-up the wire along it's entire length.
Many years ago, I saw someone that lost the cooling sys while idling out but he didn't notice it. Exh manifold heated up and melted some wires and cause all sorts of chaos.
#35
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Joined: Aug 2019
Posts: 1,249
Likes: 420
From: BC
Thought abt this too. Seems like a remote mounted co2 (or ABC) extinguisher with a hose attached and running into the bilge would be pretty effective in a semi-sealed environment. Saw a video the other night abt EV fires on car hauling ships. They seal off the deck and flood it with co2. That's works well for most fires (but unfortunately not for EVs).
My experience with loose connections and heat has been that the heat typically remains localized and doesn't heat-up the wire along it's entire length.
Many years ago, I saw someone that lost the cooling sys while idling out but he didn't notice it. Exh manifold heated up and melted some wires and cause all sorts of chaos.
My experience with loose connections and heat has been that the heat typically remains localized and doesn't heat-up the wire along it's entire length.
Many years ago, I saw someone that lost the cooling sys while idling out but he didn't notice it. Exh manifold heated up and melted some wires and cause all sorts of chaos.
Maybe a plastic melting clip system that auto unclips with the heat.
I'll have to investigate those burning balls.
#36
Appears to have been an Alternator Failure. I can’t post a video, but there are parts rumbling around inside the alternator and the terminal is burned to hell.
Two new Alternators on the way from Hardin. Also, big thanks to them as they had the Harness Below delivered two days later.
If I get out of this for $1,000 in parts, no one hurt and back on the water by July 4, I’ll consider myself lucky in an otherwise unlucky week (Boat Fire Saturday, Wednesday I had a new generator delivered and dropped off in the driveway and I ran over it with my RV 10 minutes later, and then Thursday night I tore my Planter Fascia in my foot and am walking around on crutches). Not my best week HAHA
Two new Alternators on the way from Hardin. Also, big thanks to them as they had the Harness Below delivered two days later.
If I get out of this for $1,000 in parts, no one hurt and back on the water by July 4, I’ll consider myself lucky in an otherwise unlucky week (Boat Fire Saturday, Wednesday I had a new generator delivered and dropped off in the driveway and I ran over it with my RV 10 minutes later, and then Thursday night I tore my Planter Fascia in my foot and am walking around on crutches). Not my best week HAHA
#39
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Joined: Mar 2020
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Likes: 512
Glad to hear the boat is coming along rather nicely. Sorry to hear about the other misfortune.
I don't understand why there isn't a fusible link between the alt and battery like cars use?
I'm installing a high output alt on my engine and have been looking into this.
I don't understand why there isn't a fusible link between the alt and battery like cars use?
I'm installing a high output alt on my engine and have been looking into this.
#40
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Joined: Jan 2007
Posts: 2,090
Likes: 1,214
From: Murrayville Georgia
most times a fusible link on the alternator is at the battery or starter post. problem with this is if it shorts between the link and alternator (wire rubs thru on the engine mount or such) the alternator is the source of power so it can just go to full output and the link never sees that load. fusible links work great when the short is on the opposite side of the power source (battery) but the alternator is also a power source and if it is spinning then it is powering. I guess if the link is on the alternator end of the wire it would work but that is not how most are wired.


