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Blue cable in bilge - AC earth?

Printed From: myHanse.com
Category: Hints & Tips
Forum Name: 311 / 312 / 315
Forum Description: 311 / 312 / 315 Hints and Tips
URL: https://www.myhanse.com/forum_posts.asp?TID=14498
Printed Date: 27 March 2026 at 03:41
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com


Topic: Blue cable in bilge - AC earth?
Posted By: Ancher
Subject: Blue cable in bilge - AC earth?
Date Posted: 24 February 2024 at 16:46
Recently bought a Hanse 311, 2001 modell. 

Discorvered a blue cable in the bilge that was loose. There was no terminal on in, but this might have corroded away due some bad wiring. The bilge has probably been full of water for the last five years...

My questions are: 
- Does anyone know what this cabel i for is? AC earth? 
- What is the metallic plate on the right hand side? Earthingplate? 

I will start checking the electrical system more thoroughly soon, but any hints are appreciated :)





Replies:
Posted By: Captain Cook
Date Posted: 24 February 2024 at 18:41
As for grounding plate read this: https://www.myhanse.com/q-370-add-on-at-the-bottom-of-the-boat_topic11758_post96900.html?KW=radio+earth#96900" rel="nofollow - https://www.myhanse.com/q-370-add-on-at-the-bottom-of-the-boat_topic11758_post96900.html?KW=radio+earth#96900
Earth cables are normally yellow/green.
Blue cables normally carry negative 12V from the control panel to bilge pump (4mm2), or to fridge or autopilot (6mm2).
If you need a cable list for the 311, try "Manuals and Drawings" here on myhanse.
:Kjeld


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Freya H400 #27 (2006),2-cabin, 40HP 3JH4E, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)


Posted By: Ancher
Date Posted: 01 March 2024 at 05:54
Thanks for the reply!

There is a groundingplate on the hull, but there has to be somewhere to connect the circut o it innside the boat, so the link you sent did not make me any wiser, maybe i misread it? 

-Eirik 


Posted By: Captain Cook
Date Posted: 01 March 2024 at 22:06
My grounding plate is connected via a yellow/green wire to the terminal in the top of the photo, above the ICOM M802 label. This is HF radio "Ground", which never can be mixed with engine ground. The yellow button beneath the ICOM label is a diode bridge.
Engine ground/12V negative battery are all the blue wires in the left hand side of the photo. You could send a PM (Personal Mail) to one of the members mentioned in "Manuals and Drawings" and ask for a cable diagram.



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Freya H400 #27 (2006),2-cabin, 40HP 3JH4E, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)


Posted By: Captain Cook
Date Posted: 01 March 2024 at 22:17
If you are searching for a cable diagram, you may find one on Marco´s homepage:
https://www.wesailhanse.se/370_manuals.htm " rel="nofollow - https://www.wesailhanse.se/370_manuals.htm  ; ........................it may not be completely accurate, but until you find the right one, it may give you a hint. Most Hanse boats use the same colour codes for the cables.
Useful information about Hanse boats can be found on wesailhanse.


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Freya H400 #27 (2006),2-cabin, 40HP 3JH4E, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)



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