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ccgraham1
#1 Posted : Monday, April 19, 2010 12:36:43 PM(UTC)
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hello everyone. This is my first post, so I hope I get it right. I am the proud new owner of a 76 32 sudan. We bought her about a month ago and had her trucked in to Ft. Loudon in Knoxville Tn.from Old Hickory at Galitan Tn. On the whole she's in pretty good shape, but there are still plenty of issues I want to take care of. High on my list is to check and correct any grounding mistakes that may have been made by the previous owner. To that end I need to find the main common ground. Capt. T tells me that this is the place to ask. There are many Marimettes on Ft Loudon. I have already mey half a dozen owners. All friendly people with great boats. I hope to meet many more in the future, and look forward to an educational and enjoyable association with this forum. I'll try to post picks. as soon as we have our renaming cerimony. All advice is greatly appreciated.
MINOR ADVENTURE
32'Sudan W/Twin Crysler 318s
Concord Marina, Ft. Loudon Lake
Knoxville, Tn[/color]
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Docsnow
#2 Posted : Monday, April 19, 2010 2:14:39 PM(UTC)
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First off Welcome to the forum Applause

We will be glad to assist in any possible (other then in $$$) U are sure to find the answer on this site. Well back to the issue at hand the DC ground is a lug (s) near the front of the eng that the battery ground go to. any other ground wiring to hull is a error made by P O or their lack of experience with BigM vessels. Now on the 120 V all grounds should go to ground multi lug located in or around your fuse panel. usually behind the lower helm will be a brass bar with multiple white wires going to it. now these should be the only 2 places there should be a ground wire going to. A lot of P O’s try to save a buck or 2 on wire & grounding to a near by frame rib. This may take some time to find all errors but as U do it will raise your Capac readings also by getting the proper groundings. DC fault grounds are worst than AC 120V but AC can be fatal to U & guest where as DC Grd / faults will cause electrolysis damage to the hull which isn’t good either.
Somewhere in the archives DOUG ROSE has a great illustration on the BigM wiring diagram.
There is also a plug in adapter for AC groung faults can be found at most marine stores. AnyWho that’s my ½ penny’s worth Anxious

Norm,

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fastjeff
#3 Posted : Monday, April 19, 2010 11:37:52 PM(UTC)
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Welcome! We are over 500 posters, by the way, and nearly any question you might have on any subject will have someone here to answer it!

Jeff (the motorhead)

PS: Friend at my marina picked up a "good deal" last year on an Egg Harbor. This year, in reparing the interior, he discovered acres of rotted wood! Should have bought a Marinettte.
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell

Capt. Chad
#4 Posted : Monday, April 19, 2010 11:47:11 PM(UTC)
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Welcome. Are you the guys I met at Concord Marina during Oysterfest? If so I checked out your ride when we left the next morning. Looks nice! We need to have a Marinette raft up pretty soon. I'm sure my buddy Rick will bring out his 37'.
1981 32' Sedan Fly Bridge
440 ci 330hp (2)
7.5 kw Kohler
"International Harbor Marina"
Friendsville TN, TN River
Capt. Chad
#5 Posted : Monday, April 19, 2010 11:48:30 PM(UTC)
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BTW, if you have any problems out of the Mopar power in the bilge ask Fast Jeff. He has helped me out greatly on the Chrysler Inboard Site.
1981 32' Sedan Fly Bridge
440 ci 330hp (2)
7.5 kw Kohler
"International Harbor Marina"
Friendsville TN, TN River
dependo
#6 Posted : Tuesday, April 20, 2010 12:30:09 AM(UTC)
dependo

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Welcome. Lots of BigM on the Tennessee River & lots of help on this Forum. Wayne
1973 express FB 32ft
twin 318
"Southern Lady"
Chattanooga
ccgraham1
#7 Posted : Tuesday, April 20, 2010 7:02:40 AM(UTC)
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Thanks Norm, I'll see if I can find that old artical. Thanks for the welcome fastjeff I'm sure I'll have plenty of questions for you. Yes Capt. Cad that was my wife and I. A raft up sounds like fun. Thanks all.
MINOR ADVENTURE
32'Sudan W/Twin Crysler 318s
Concord Marina, Ft. Loudon Lake
Knoxville, Tn[/color]
tundrarules
#8 Posted : Tuesday, April 20, 2010 8:32:30 AM(UTC)
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ccgraham1,
Welcome to the forumApplause I've only been a member for a few months now. The guys on this forum are the best! They've helped me with a few issues already. I learn something new everyday here. I'm also a Tennessee River rat (Pickwick). I'll see you around the forum. I also have checking my grounds on the long list of things to do. Thanks for asking a good question.
1985 Marinette 29 Sedan bridge
Twin 318s, 660 hours
New Edelbrock 1409 carbs (working like a charm)
Original Electronic Ignition, Blaster 2 coils, 90 deg plug wire universal kit cut to fit
Raw water system
Freshwater always
Located Pickwick Lake, TN,MS,AL


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If the guys on this forum take their time to help you, have the courtesy to update your thread with the resolution.
jhemp3
#9 Posted : Tuesday, April 20, 2010 8:48:50 AM(UTC)
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ccgraham1,
I've just moved my Marinette from Loudoun to Pickwick (last Spring) and know you will enjoy the cruising on Loudoun and on Tellico. We berthed at Choto Marina for almost four years and liked the small marina environment. Good luck and you can be assured to find good friends and the best Marinette info on the forum.
Jim
Jim Hemphill
Detour
'87 32' FBS, USCG Certification #1057921
Berthed MM 207 Tennessee River, Picwick State Park Marina
albertrr33
#10 Posted : Tuesday, April 20, 2010 11:44:41 AM(UTC)
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welcome ccgraham1. i'm new myself and soakin up the info.
so on the grounding thread; the way i read it nothing should be grounded to the boat. i was pokin around a little this morning and i noticed that there was a ground from my fuel tank, i think it was for the fuel gage, to the boat. should this have been run to a battery ground?
Albert
'89 32' Sedan Bridge "Domino" Docked; Michigan City, Indiana
fastjeff
#11 Posted : Tuesday, April 20, 2010 10:52:39 PM(UTC)
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EVERYTHING should be grounded to the hull except the props/ shaft(s) and rudder(s). The battery ground cables go directly from the motors to the hull grounding lug, as should every other 12 volt acessory on the boat.

Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell

albertrr33
#12 Posted : Tuesday, April 20, 2010 11:57:39 PM(UTC)
albertrr33

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so Hull then means any aluminum that is part of the boat and has continuity to the grounding lug can have a ground wirw attached to it? or the grounding lug should be connected to a buss bar where all grounds wirers should be attached? there should be nowhere on the vessel frame/hull accessory grounds attached, except groung lug or buss connected to grd lug? Think
Albert
'89 32' Sedan Bridge "Domino" Docked; Michigan City, Indiana
GB49
#13 Posted : Wednesday, April 21, 2010 12:24:28 AM(UTC)
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Grounding to the "hull" means only 2 precise locations. The 2 ground points to the hull are the negative battery grounds which in most cases are right between the engines just below the firewall. All grounds for everything should ultimately ground only to those 2 points.

The idea is to eliminate a network of grounds throughout the hull.

You can have ground buses all around the boat but they all must isolated from the hull and run directly to the negative battery ground points and only at those points should they be grounded to the hull.

Its convenient to ground instruments etc to the hull wherever they are being installed but that is a bad idea.

The only thing I've seen grounded right to the hull is the trim tab motor. I'm assuming the factory did that and its not something that runs for long periods of time, they probably figured it wont hurt anything. Probably a little corner cutting there.

-Karl
1986, 32' Sedan, twin 360ci, 275hp Chrysler's w/ K&N flame arrestors
albertrr33
#14 Posted : Wednesday, April 21, 2010 6:52:05 AM(UTC)
albertrr33

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well now i have things to look for. the fuel gage from tank looks factory but, maybe not. i'll have to look at lights under v berth as well as macerator pump as i changed that last fall and think it had a hull grd. eh, it could be worse.
Albert
'89 32' Sedan Bridge "Domino" Docked; Michigan City, Indiana
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