Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 18-07-2016, 12:24   #1
Registered User

Join Date: Apr 2016
Location: Redondo Beach,Ca
Boat: Newport 30
Posts: 13
Starter wiring with in line fuse?

All,
Little help here. To begin this is a universal diesel in a 1984 30` Newport. Don`t think it matters as a starter should be a starter. Had a no start issue and found it to be a broken wire from ignition switch to starter motor. There was a in line fuse in this wire and it had come apart at the corroded connection at the fuse holder. Quick fix at the islands was to ditch the fuse and splice wire together.
I have never seen a fuse in this wire, Am I missing something? Should I put one back in?
__________________

__________________
Dubble D is offline   Reply With Quote
Old 18-07-2016, 12:33   #2
Registered User
 
Paul54's Avatar

Join Date: May 2015
Location: Neuse River, NC
Boat: 1984 Catalina 36
Posts: 126
Re: Starter wiring with in line fuse?

I have a 84 Universal or Kubota diesel with out any fuse for the starter solenoid. Not all boats fuse the starter circuit. I did however try to go help another boat this weekend with a Yanmar that had a blown fuse for the starter solenoid. He got it replaced and was running again.

Proper sized fuses are always a good idea. They can prevent fires, and alert you to other problems.
__________________

__________________
Paul
1984 Catalina 36
Paul54 is offline   Reply With Quote
Old 18-07-2016, 12:40   #3
Registered User

Join Date: Jan 2015
Location: Victoria BC
Boat: 1980 Hunter 36
Posts: 661
Re: Starter wiring with in line fuse?

I would definitely fuse the starter circuit.

Battery Bank Fusing Photo Gallery by Compass Marine How To at pbase.com
__________________
S/V Gudgeon
www.gudgeonblog.ca
alctel is offline   Reply With Quote
Old 18-07-2016, 12:47   #4
Registered User
 
ullar's Avatar

Join Date: Dec 2011
Location: Coral Coast, Australia
Boat: Amel Euros 41
Posts: 153
Re: Starter wiring with in line fuse?

For what it's worth. I'm having a 400A ANL fuse close to my starting battery. That has been sufficient for Volvo Penta MD21A 4-cilinder. To keep maintenance down both fuse holder and fuse are gold plated.
__________________
ullar is offline   Reply With Quote
Old 18-07-2016, 13:21   #5
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,148
Re: Starter wiring with in line fuse?

A fuse goes in the solenoid circuit, not the starter circuit. We have a VP MD7 and there is one. (I think about 35A)

If there ever is one in the starter circuit, it will be a huge one. Just look at starter specs, they are often 1000w and bigger. I can't remember typical wire ampacity but I am sure the fuse will be a monster.

b.
__________________
barnakiel is offline   Reply With Quote
Old 18-07-2016, 13:42   #6
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29 49.16 N 82 25.82 W
Boat: Pearson 422
Posts: 12,235
Re: Starter wiring with in line fuse?

Quote:
Originally Posted by barnakiel View Post
A fuse goes in the solenoid circuit, not the starter circuit. We have a VP MD7 and there is one. (I think about 35A)

If there ever is one in the starter circuit, it will be a huge one. Just look at starter specs, they are often 1000w and bigger. I can't remember typical wire ampacity but I am sure the fuse will be a monster.

b.
In the starter circuit even for larger diesels 200-300 amp fuses work. I think I have a 250 or 300 amp fuse on my 58 HP Westerbeke and hasn't blown yet, even with the solenoid stuck and the starter wouldn't disengage.
__________________
The water is always bluer on the other side of the ocean.
skipmac is online now   Reply With Quote
Old 18-07-2016, 13:56   #7
Registered User
 
ullar's Avatar

Join Date: Dec 2011
Location: Coral Coast, Australia
Boat: Amel Euros 41
Posts: 153
Re: Starter wiring with in line fuse?

Quote:
Originally Posted by barnakiel View Post
A fuse goes in the solenoid circuit, not the starter circuit. We have a VP MD7 and there is one. (I think about 35A)

If there ever is one in the starter circuit, it will be a huge one. Just look at starter specs, they are often 1000w and bigger. I can't remember typical wire ampacity but I am sure the fuse will be a monster.

b.
A fuse in the solenoid circuit is such a no brainer, a definite must and should be sized according to solenoid wire size.

You sure thought of 1000A not watts? Still, everybody I've talked with are happy with reasonable size starter battery fuses.
__________________
ullar is offline   Reply With Quote
Old 18-07-2016, 14:02   #8
Registered User

Join Date: Apr 2016
Location: Redondo Beach,Ca
Boat: Newport 30
Posts: 13
Re: Starter wiring with in line fuse?

Thanks all,
I`m off to pick up a quality fuse and put it back in that line. Sometimes we need to stop and ask the `Cost to Gain `question!
Thanks for the link Alctel, good stuff, I`ll be going a little further now and look at fusing all the battery banks at the terminals.
__________________
Dubble D is offline   Reply With Quote
Old 18-07-2016, 14:50   #9
Registered User
 
Stu Jackson's Avatar

Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 6,282
Re: Starter wiring with in line fuse?

Quote:
Originally Posted by Dubble D View Post
Thanks all,
I`m off to pick up a quality fuse and put it back in that line. Sometimes we need to stop and ask the `Cost to Gain `question!
Thanks for the link Alctel, good stuff, I`ll be going a little further now and look at fusing all the battery banks at the terminals.
While you're thinking about that try these posts, you may have to visit different pages of the thread and I also suggest you read the embedded links, too, same issue.

CRITICAL UPGRADES - DO THESE OR ELSE!!!
__________________
Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, (Maple Bay Marina) SR/FK, M25, Rocna 10 (22#) (NZ model)
Stu Jackson is offline   Reply With Quote
Old 18-07-2016, 15:53   #10
Registered User

Join Date: Apr 2011
Posts: 2,232
Re: Starter wiring with in line fuse?

I recently re-wired the panel to the engine, deleting the trailer plugs. The inline fuse holder in the wire to the starter solenoid was replaced with a much better quality waterproof one, moved close to the panel for ease of access (also a less damp location).

After all, if the purpose of the fuse is to protect the solenoid wire, doesn't it make sense to put the fuse as close as possible to the source of the voltage, not at the other end?

LED lighting, soundproof, Sailor's Solutions Inc.
__________________
Bristol 31.1, SF Bay.
MarkSF is offline   Reply With Quote
Old 18-07-2016, 16:07   #11
Registered User
 
deblen's Avatar

Join Date: Oct 2014
Location: Grand Manan,N.B.,Canada N44.40 W66.50
Boat: Mascot 28 pilothouse motorsailer 28ft
Posts: 1,331
Images: 1
Re: Starter wiring with in line fuse?

Quote:
Originally Posted by MarkSF View Post
I recently re-wired the panel to the engine, deleting the trailer plugs. The inline fuse holder in the wire to the starter solenoid was replaced with a much better quality waterproof one, moved close to the panel for ease of access (also a less damp location).

After all, if the purpose of the fuse is to protect the solenoid wire, doesn't it make sense to put the fuse as close as possible to the source of the voltage, not at the other
LED lighting, soundproof, Sailor's Solutions Inc.
I believe you are correct Mark. Putting fuse at solenoid end does not protect the wire (from start switch to solenoid) at all. It should be at the start switch end,or,better still,the source for the whole start switch could be fused close to the bat. supply(usually the big pos term on solenoid that has the heavy cable to bat.)
Fuses should be close to the source. IMHO
__________________
My personal experience & humble opinions-feel free to ignore both
deblen is offline   Reply With Quote
Old 18-07-2016, 16:10   #12
Registered User
 
deblen's Avatar

Join Date: Oct 2014
Location: Grand Manan,N.B.,Canada N44.40 W66.50
Boat: Mascot 28 pilothouse motorsailer 28ft
Posts: 1,331
Images: 1
Re: Starter wiring with in line fuse?

Quote:
Originally Posted by Stu Jackson View Post
While you're thinking about that try these posts, you may have to visit different pages of the thread and I also suggest you read the embedded links, too, same issue.

CRITICAL UPGRADES - DO THESE OR ELSE!!!
Thanks for link.
I agree with KWKloeber! Fuse at wrong end. Fuse in wrong wire.
__________________
My personal experience & humble opinions-feel free to ignore both
deblen is offline   Reply With Quote
Old 18-07-2016, 16:16   #13
Registered User
 
Stu Jackson's Avatar

Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 6,282
Re: Starter wiring with in line fuse?

Quote:
Originally Posted by deblen View Post
Thanks for link.
I agree with KWKloeber! Fuse at wrong end. Fuse in wrong wire.
You're very welcome. It is always pleasant to meet someone who understands. All the best.
__________________
Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, (Maple Bay Marina) SR/FK, M25, Rocna 10 (22#) (NZ model)
Stu Jackson is offline   Reply With Quote
Old 18-07-2016, 17:52   #14
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,148
Re: Starter wiring with in line fuse?

Quote:
Originally Posted by skipmac View Post
In the starter circuit even for larger diesels 200-300 amp fuses work. I think I have a 250 or 300 amp fuse on my 58 HP Westerbeke and hasn't blown yet, even with the solenoid stuck and the starter wouldn't disengage.
Whatever works.

With a 1.5 hp starter motor the amps induced at the first flash of a second the starter kicks in may easily blow up a 200 A fuse (on a 12 V starter, anyways). Plenty depends on how cold it is and what engine one has. A Westerbeke (if similar to those used in gensets) is way different from an old Volvo with an old school flywheel ...

I think maybe 200 / 300 A fuse is fine with lighter wires, but on my boat the wires are ... just imagine. Etc. So to say the size of the fuse, when present, will vary quite a bit between boats.

Big fuses are difficult to buy offshore. They are also difficult to fix (short) in a boat that may be rolling and pitching in the dark (that's exactly when such things happen - mostly at 04:00 hours).

Is it a good practice to have a circuit breaker on this circuit BTW?

I like the idea of protection on the starter circuit much as my boat came without one.

b.
__________________
barnakiel is offline   Reply With Quote
Old 18-07-2016, 18:23   #15
Registered User

Join Date: Apr 2011
Posts: 2,232
Re: Starter wiring with in line fuse?

One advantage of using the MBRF fuses at the batteries is that if one blows, I can juat switch to the other battery bank until I fix it.
__________________

__________________
Bristol 31.1, SF Bay.
MarkSF is offline   Reply With Quote
Reply

Tags
wiring

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yanmar 3GM30 Starting issues - Starter? Solenoid? Wiring? jpeac2 Engines and Propulsion Systems 22 13-07-2015 18:49
wiring starter motor and alternator on isuzu pisces 27hp marine engine traceyak Our Community 2 31-03-2015 00:07
ANL Fuse to Starter Down2TheC Electrical: Batteries, Generators & Solar 3 22-08-2009 21:18
Starter fuse for outboard... Allan S Engines and Propulsion Systems 2 11-05-2008 18:27
Wiring a Starter Solenoid rbarclay Electrical: Batteries, Generators & Solar 4 07-02-2008 05:03



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 19:42.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.