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top bearing problem H375

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alidal View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote alidal Quote  Post ReplyReply Direct Link To This Post Posted: 06 March 2018 at 09:43
Never advice anyone to cut the earth for the shore power! Thumbs Down
Hanse 400#655
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StavrosNZ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote StavrosNZ Quote  Post ReplyReply Direct Link To This Post Posted: 06 March 2018 at 20:23
I most certainly would never suggest anybody removes the earth wire for shore power, this is potentially fatal should you have a short circuit aboard.

What you should have is a galvanic isolator on the earth wire to stop other vessels dirty power coming aboard your boat but NEVER cut or disconnect your earth wire.
Stephen
2010 H400, Auckland, New Zealand
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alidal View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote alidal Quote  Post ReplyReply Direct Link To This Post Posted: 06 March 2018 at 21:05
Originally posted by StavrosNZ StavrosNZ wrote:

but NEVER cut or disconnect your earth wire.
Hanse 400#655
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Sea-U View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sea-U Quote  Post ReplyReply Direct Link To This Post Posted: 07 March 2018 at 11:15

"but NEVER cut or disconnect your earth wire."

This is what is true!!!!

BUT!!! if you are a boat owner ... like most in our harbour ... we love our boat more than our life. Smile

I personally use solar power, but many others have cut the earth and are connected to shore power all the time with no problem.

Galvanic isolator is good, but fully isolation with transformer is best.


Sea-U is a 370e #532 located SW Norway
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tango View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tango Quote  Post ReplyReply Direct Link To This Post Posted: 08 March 2018 at 12:13
Thank you stavroznz for your advice
I found the buzz bar.  I do not have a shell anode, I will disconnect the green and yellow wire from the rudder
but will not it be interesting to add a hull anode closer to the rudder?
and if so how installed?
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alidal View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote alidal Quote  Post ReplyReply Direct Link To This Post Posted: 08 March 2018 at 14:16
On my H400 its placed under the floorboard in the port aftcabin. And connected to the minus bar..
Hanse 400#655
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brufan Quote  Post ReplyReply Direct Link To This Post Posted: 08 March 2018 at 14:25
Anyway.  You must ask JEFA.
My 2011 yacht was recalled to have have earth cable disconnected according to a warning notice from Jefa to Hanse.
There's too much salt and/or corrosion on these aluminium parts.
Please refer to Jefa.  They know their job better than anyone else.
Bruno

hanse 355 - 57

S/Y Spicy Ginger

White hull, 2 cabins, Volvo D1-30, Selden rig, removable mainsheet track system (modifications done now), Simrad-Jefa autopilot.
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alidal View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote alidal Quote  Post ReplyReply Direct Link To This Post Posted: 08 March 2018 at 14:51
I asked Jefa about this and here is the answer from Stig Jensen: (In Dansih)

"Med hensyn til jording af din ror stamme vil vi på det kraftigste anbefale dig at fjerne den."

That means they strongly recommend to remove the grounding from the rudderstock!



Edited by alidal - 08 March 2018 at 14:52
Hanse 400#655
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StavrosNZ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote StavrosNZ Quote  Post ReplyReply Direct Link To This Post Posted: 08 March 2018 at 19:54
As per my previous advise if you don't have a separate hull anode then disconnect the earth wire from the rudder, if you do have the hull anode remove wire connecting AC and DC buzz bars and leave earth wire in place.

Jefa advise you to remove the wire because if everything is connected and the protective anode in your circuit (sail drive and or hull) wastes away your rudder will be the new anode. However if you have a hull anode and you separate the AC & DC buzz your hull anode is protecting your rudder. Remember you have electrics connected to your rudder (auto helm) and the area around your rudder gets dirty and has potential to conduct.
Stephen
2010 H400, Auckland, New Zealand
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Vertigo Quote  Post ReplyReply Direct Link To This Post Posted: 14 March 2018 at 09:58


S/Y Vertigo
Hanse 375 #805
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