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04-06-2016, 05:09 PM
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#21
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Veteran Member
City: Ft Myers
Vessel Name: Linda Lee
Vessel Model: 45' Aquarius motoryacht
Join Date: Oct 2015
Posts: 68
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Thank you everyone. I found the problem. I locate a bad fuse. It was buried under the wires where I could not see it at first.
Thank you
Henry
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04-06-2016, 07:40 PM
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#22
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Guru
City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,947
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Wow! Problem found closure post! Good job.
__________________
Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May, NJ
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04-06-2016, 07:47 PM
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#23
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Enigma
City: Slicker?
Join Date: Oct 2007
Posts: 16,540
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Greetings,
Not so fast....Why did the fuse blow? Hahahaha....
__________________
RTF
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04-06-2016, 07:55 PM
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#24
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Guru
City: Sarasota/Ft. Lauderdale
Join Date: Apr 2014
Posts: 5,438
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Quote:
Originally Posted by hfmckevitt
Thank you everyone. I found the problem. I locate a bad fuse. It was buried under the wires where I could not see it at first.
Thank you
Henry
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It's good to see your story had a positive ending.
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04-06-2016, 07:57 PM
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#25
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Guru
City: Seaford Va on Poquoson River, VA
Vessel Name: Old Glory
Vessel Model: 1970 Egg Harbor 37 extended salon model
Join Date: Jan 2016
Posts: 2,264
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Quote:
Originally Posted by RT Firefly
Greetings,
Not so fast....Why did the fuse blow? Hahahaha....
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Sometimes they get old and they just die.
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04-06-2016, 07:57 PM
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#26
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Guru
City: Sarasota/Ft. Lauderdale
Join Date: Apr 2014
Posts: 5,438
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Quote:
Originally Posted by RT Firefly
Greetings,
Not so fast....Why did the fuse blow? Hahahaha....
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Something grounded out?
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04-06-2016, 08:11 PM
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#27
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Senior Member
City: Oriental, NC
Vessel Name: M/V Major Award
Vessel Model: Senator 35 w/single Lehman
Join Date: Oct 2007
Posts: 423
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Or the fuse just retired. Jack pot!
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04-06-2016, 08:34 PM
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#28
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Enigma
City: Slicker?
Join Date: Oct 2007
Posts: 16,540
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AWWW....You guys are no fun...
__________________
RTF
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04-08-2016, 02:30 PM
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#29
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Guru
City: North Charleston, SC
Join Date: Sep 2010
Posts: 4,869
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Quote:
Originally Posted by sdowney717
Sometimes they get old and they just die.
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That would be pretty rare. Even more rare considering that it apparently failed while the boat was idle.
It might remain a mystery as to why the fuse failed but it would be a good idea to have a spare on hand just in case there actually is a reason.
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04-08-2016, 02:48 PM
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#30
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Guru
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48 (sold)
Join Date: Apr 2008
Posts: 10,179
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So how common are blown fuses without a Paul Harvey moment showing up?
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04-08-2016, 05:02 PM
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#31
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Moderator Emeritus
City: Chicago, IL
Vessel Name: Bay Pelican
Vessel Model: Krogen 42
Join Date: Oct 2007
Posts: 2,993
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Quote:
Originally Posted by sunchaser
So how common are blown fuses without a Paul Harvey moment showing up?
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My master fuse is now 31 years old. The backup is now 17 years old.
__________________
Marty
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04-08-2016, 06:28 PM
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#32
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Guru
City: North Charleston, SC
Join Date: Sep 2010
Posts: 4,869
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We would expect a master fuse to only blow if there's a fault in the cable from the batteries to the 12 volt DC panel. All the branch circuits have their own circuit protection and the fuse and cable should be sized to run everything at once.
Bow thrusters and possibly windlasses would normally have their own circuits and protection and not operate off the 12 volt DC panel.
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04-08-2016, 07:12 PM
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#33
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Veteran Member
City: Ft Myers
Vessel Name: Linda Lee
Vessel Model: 45' Aquarius motoryacht
Join Date: Oct 2015
Posts: 68
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I could not locate the size of the fuse that went bad, so I used a 30amp. How could I have found the correct size. The old one was unreadable.
Henry
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04-08-2016, 07:56 PM
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#34
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Guru
City: Sarasota/Ft. Lauderdale
Join Date: Apr 2014
Posts: 5,438
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Quote:
Originally Posted by hfmckevitt
I could not locate the size of the fuse that went bad, so I used a 30amp. How could I have found the correct size. The old one was unreadable.
Henry
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You have to calculate the total load on the line.
You can get a idea of the possible total load by the size of the wires going to and from the fuse holder.
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04-08-2016, 08:42 PM
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#35
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TF Site Team
City: Seneca Lake NY
Vessel Name: Bacchus
Vessel Model: MS 34 HT Trawler
Join Date: Nov 2014
Posts: 7,808
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Quote:
Originally Posted by Capt.Bill11
You have to calculate the total load on it.
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My thinking... main line fuses are sized to protect the wire size from batty to distribution panel from overloading... sized for ampacity of conductors.
Branch circuit breakers / fuses should be sized for individual circuit loads.
__________________
Don
2008 MS 34 HT Trawler
"Bacchus"
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04-14-2016, 09:37 AM
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#36
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Guru
City: North Charleston, SC
Join Date: Sep 2010
Posts: 4,869
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Quote:
Originally Posted by hfmckevitt
I could not locate the size of the fuse that went bad, so I used a 30amp. How could I have found the correct size. The old one was unreadable.
Henry
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30 amp is way to small if we are talking about the feed from the batteries to the DC panel. Looking at the cable size and then looking this up online would tell you the proper fuse size.
Another indication would be the rating of the DC panel's main circuit breaker. If there's a difference, use the smaller fuse size.
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