Danger Will Robinson - Danger! - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Electrical Systems
 Not a Member? 
  #1  
Old 02-18-2009
Spiritman's Avatar
Baybilly
 
Join Date: Jan 2008
Posts: 74
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
Spiritman is on a distinguished road
Danger Will Robinson - Danger!

This subject may have been tackled before, but I haven’t seen it in this forum.


Early February, central Chesapeake, 62 degrees – we’re goin’ sailing!

I disconnect the shore power cord (first at the dock) then coil it up as I move around to the connection port in the cockpit. I loosen the black ring – as I’ve done hundreds of times before – yet the cord seems to be glued in place. After giving it a good tug, it separates to reveal this: (see images below)

All of the AC wiring, and the breaker panel on the boat are less than five years old, and the power was still flowing – no breakers had been tripped.

I took the cord to the local WM and showed it to a seemingly knowledgeable fellow who was certain that moisture-induced arcing was the culprit. He said it was not an uncommon phenomenon. All it takes is a little moisture to work its way between pin and socket and POW. Sometimes it could burn your boat up. He said it doesn’t necessarily damage any of the boat’s internal wiring (but strongly suggested inspecting everything thoroughly – which I did). He also said that this could happen regardless of the amount of load on the line. In fact, this could occur without ANY load at all.

I’ve since replaced the socket and the power cord, just to be safe.

Can anyone add or refute any of this? Also, does anyone have any tips for preventing it?

Thanks,

G.
Attached Thumbnails
Danger Will Robinson - Danger!-cord.jpg   Danger Will Robinson - Danger!-rec.jpg  
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 02-18-2009
Member
 
Join Date: Apr 2008
Posts: 86
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
Islander30Bahama is on a distinguished road
A product that I have used for years is Grote Ultra-Seal it is a non conductive grease that encapsulates the connection to prevent moisture from getting in between the conductive surfaces. I used this stuff in the Coast Guard all the time on receptacles out on the decks. Before a storm or heavy seas I would go to each outlet and put this stuff in the receptacle to prevent sea water from getting in and causing unwanted grounds. It saved me a lot of repair jobs and was well worth it. Hope this helps.

Jeff
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 02-18-2009
Spiritman's Avatar
Baybilly
 
Join Date: Jan 2008
Posts: 74
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
Spiritman is on a distinguished road
Thanks, Jeff.

Would this product work for cords that were being repeatedly connected and disconnected?

Geoff
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 02-18-2009
Member
 
Join Date: Apr 2008
Posts: 86
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
Islander30Bahama is on a distinguished road
I found that if you pack the receptacle side you will get a few plug and unplugs out of it before you need to squirt a little more in. It will go a long way. I use this stuff on pretty much any kind of electrical plug. I have used it on VHF antenna cables to canon plugs used on radar systems. West Marine sells one but I have found cheaper versions at auto parts stores that are just as effective cause you know when the word Marine gets put in front its good reason to double the price. What your looking for is a Dielectric grease to prevent corrosion and moisture caused arcing. Spending a lttle on this could prevent major arcing in the future and possibly your boat.

Jeff
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 02-18-2009
Banned
 
Join Date: Nov 2002
Location: New York
Posts: 5,823
Thanks: 0
Thanked 14 Times in 14 Posts
Rep Power: 0
bubb2 has a spectacular aura about bubb2 has a spectacular aura about bubb2 has a spectacular aura about
The cord looks like it is a MARINCO. If it is and under 5 years old it is under warranty and I would think that West should replace it as it could be the cause of your problem.
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 02-18-2009
Member
 
Join Date: Apr 2008
Posts: 86
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
Islander30Bahama is on a distinguished road
Geoff,

Also one thing that I forgot to mention was when I say receptacle side I mean the female side to put grease in. So you could grease at the shore power receptacle on the dock then the female plug on the cable.

Jeff
Reply With Quote Quick reply to this message Share with Facebook
  #7  
Old 02-18-2009
Spiritman's Avatar
Baybilly
 
Join Date: Jan 2008
Posts: 74
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
Spiritman is on a distinguished road
Bubb -

I was unaware of the warranty - thanks.

Jeff -

Appreciate the info. I'll check it out.

Geoff
Reply With Quote Quick reply to this message Share with Facebook
  #8  
Old 02-18-2009
Senior Member
 
Join Date: Jul 2008
Location: Southern Ontario
Posts: 117
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
farmboy is on a distinguished road
Spiritman,

Any shop that installs trailer hitches/light hookups should have dielectric grease.
__________________
farmboy
Shark24 #337
Reply With Quote Quick reply to this message Share with Facebook
  #9  
Old 02-18-2009
Senior Member
 
Join Date: Aug 2006
Location: wherever
Posts: 5,264
Thanks: 8
Thanked 17 Times in 16 Posts
Rep Power: 11
xort has a spectacular aura about xort has a spectacular aura about xort has a spectacular aura about
those 30 amp twist locks are terrible
they often make poor contact which causes arcing which caused the problem you have. Make triple sure you have a solid contact EVERY time you plug in.

I doubt marinco will give you a new cord. operator error or a bad plug on the other end can easily be blamed. Please let us know if you succeed in getting a free replacement

this happens ALL the time, ask around the docks to see everybody's plugs, you'll see plenty of burned connectors
Reply With Quote Quick reply to this message Share with Facebook
  #10  
Old 02-19-2009
hellosailor's Avatar
Senior Member
 
Join Date: Apr 2006
Posts: 10,889
Thanks: 2
Thanked 103 Times in 100 Posts
Rep Power: 10
hellosailor has a spectacular aura about hellosailor has a spectacular aura about
Salt spray can form a conductive film on anything. I'd second the vote for grease. Silicon dielectric grease, aka "high temperature brake grease", will also do the job and may be easier to obtain. $8 for 1/3 ounce from the Ancor brand at chandleries, or $5 for six(?) ounces at an auto parts store, pretty much the same stuff.

The other thing to do might be to try keeping the connections out of the weather, using a leather or vinyl cover over the sockets, and an occasional fresh water rinse--or something similar to make sure salt spray isn't building up on them.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Danger timebandit General Discussion (sailing related) 25 09-17-2008 11:10 AM
An anchoring danger & Pelican Lights Cruisingdad Gear & Maintenance 123 04-02-2007 01:46 PM
A summer afternoon's sudden danger - The News Journal NewsReader News Feeds 0 08-24-2006 05:15 AM
Life in the Danger Zone SailNet Racing Articles 0 11-22-2003 08:00 PM


All times are GMT -4. The time now is 03:26 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.