Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 23-02-2012, 13:25   #1
Registered User

Join Date: Feb 2009
Location: NY
Posts: 243
What is this ?

It was on one side connected to a power bus (I hope I spell that correctly) and to nothing on the other side, at least since I repowered. I tried to google it but that does not get me anywhere. It does not move and seems harmless but it would be nice to know if it had a vital function yes or no.....
Attached Thumbnails
Click image for larger version

Name:	1.jpg
Views:	91
Size:	35.8 KB
ID:	37837   Click image for larger version

Name:	2.jpg
Views:	94
Size:	44.3 KB
ID:	37838  

__________________

__________________
arjand is offline   Reply With Quote
Old 23-02-2012, 13:26   #2
Registered User

Join Date: Feb 2009
Location: NY
Posts: 243
Re: What is this?

it might have been connected to the old engine (I repowered and did not do that myself)....
__________________

__________________
arjand is offline   Reply With Quote
Old 23-02-2012, 13:41   #3
Registered User

Join Date: Nov 2011
Location: Fethiye Turkey
Boat: Lagoon 440
Posts: 3,164
Re: What is this?

A capacitor????? Looks like one of an electric motor?????
__________________
"Political correctness is a creeping sickness that knows no boundaries"
Lagoon4us is offline   Reply With Quote
Old 23-02-2012, 13:44   #4
Senior Cruiser
 
hpeer's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: Philadelphia
Boat: Murray 33-Chouette & Pape Steelmaid-44-Safara-both steel cutters
Posts: 3,896
Re: What is this?

It clearly is a capacitor, and a big one.

I suspect that that the unused terminal went to ground.

Connected as such it would provide a path to ground for any "noise" while not effecting the desired DC.
__________________
hpeer is offline   Reply With Quote
Old 23-02-2012, 13:45   #5
Registered User
 
Jetexas's Avatar

Join Date: Jul 2009
Location: Houston, TX
Boat: 1982 Oday 34
Posts: 439
Images: 10
Re: What is this?

It's a capacitor, but for what I'm not sure. It might have been previously connected to an A/Cor refrigerator compressor.
__________________
Jetexas is offline   Reply With Quote
Old 23-02-2012, 13:47   #6
Senior Cruiser
 
Blue Stocking's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,114
Re: What is this?

Capacitor--probably used to filter EMI noise.
__________________
so many projects--so little time !!
Blue Stocking is offline   Reply With Quote
Old 23-02-2012, 13:49   #7
Registered User
 
captain465's Avatar

Join Date: Mar 2007
Location: Ft Lauderdale, FL
Boat: 38ft Irwin center cockpit sloop MERIDIAN
Posts: 616
Re: What is this?

Absolutly correct on the capacitor........I don't know how long it's been disconnected, but I would still be wary of getting accross both terminals at the same time!!! Use a jumper or a screwdriver to short accross the terminals to discharge whatever charge may still be there.
__________________
Do not go where the path may lead.........
go instead where there is no path........
and leave a trail.
Ralph Waldo Emerson
captain465 is online now   Reply With Quote
Old 23-02-2012, 13:52   #8
Registered User

Join Date: Feb 2009
Location: NY
Posts: 243
Re: What is this?

Thank you!
Question: if it came from a positive side, it did not for sure go to ground correct?
Second: I still have fridge with 12V engine, could it have been used to 'filter' fluctuations out of electricity to protect engine?
Thanks again!! Arjan
__________________
arjand is offline   Reply With Quote
Old 23-02-2012, 13:57   #9
Registered User

Join Date: Feb 2009
Location: NY
Posts: 243
Re: What is this?

One more follow up: If it is the capacitator in this plan, what does it do?
Attached Files
File Type: pdf overview.pdf (70.7 KB, 59 views)
__________________
arjand is offline   Reply With Quote
Old 23-02-2012, 14:08   #10
Registered User
 
Reefmagnet's Avatar

Join Date: May 2008
Location: puɐןsuǝǝnb 'ʎɐʞɔɐɯ
Boat: Nantucket Island 33
Posts: 2,735
Re: What is this?

Capacitors only pass AC voltages - they will block DC so it most probably is connected to ground as shown in the diagram and at a guess is acting as a filter to prevent AC noise on the DC circuit. Maybe the charger upset the radio or the TV or something like that at one point and this was the fix. The diagram is a bit muddy, but it may have also been used to keep a DC voltage on the circuit during battery switch overs (a capacitor also acts like a very low capacity battery). The fuse connected to it is a bit odd.
__________________
Reefmagnet is online now   Reply With Quote
Old 23-02-2012, 14:13   #11
Registered User
 
sy_gilana's Avatar

Join Date: Jan 2005
Location: On board
Boat: Van de Stadt 50'
Posts: 1,101
Send a message via Skype™ to sy_gilana
Re: What is this?

That is one fat cap! You could use that as a surge suppressor on any 12v load that pulls high peak loads for short periods. IF it was wired across the terminals of the fridge motor +to+ and -to- it was to help the fridge motor start by supplying enough energy to overcome starting torque.
__________________
Tight sheets to ya.
http://gilana.org
sy_gilana is offline   Reply With Quote
Old 23-02-2012, 14:29   #12
Registered User

Join Date: Feb 2009
Location: NY
Posts: 243
Re: What is this?

thank you thank you thank you!!

If I understand correctly: nothing will blow up if I take this away for now. I am never connected to shore power (wind and solar) so I am not overly worried about AC noise. (and I like to increase the simplicity of the system).
__________________
arjand is offline   Reply With Quote
Old 23-02-2012, 14:31   #13
Registered User
 
sy_gilana's Avatar

Join Date: Jan 2005
Location: On board
Boat: Van de Stadt 50'
Posts: 1,101
Send a message via Skype™ to sy_gilana
Re: What is this?

UNLESS of course the wiring is too small to the fridge, and you start popping the breaker/fuse. Try it, but don't dump it for a week or two in case its there for a reason..
__________________
Tight sheets to ya.
http://gilana.org
sy_gilana is offline   Reply With Quote
Old 23-02-2012, 14:33   #14
Senior Cruiser
 
hpeer's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: Philadelphia
Boat: Murray 33-Chouette & Pape Steelmaid-44-Safara-both steel cutters
Posts: 3,896
Re: What is this?

Quote:
Originally Posted by arjand View Post
One more follow up: If it is the capacitator in this plan, what does it do?
I think I would throw that drawing away.

More likely to get you into trouble than to help.

Make your own drawing, then you will know the system better.
__________________
hpeer is offline   Reply With Quote
Old 23-02-2012, 14:34   #15
Registered User

Join Date: Jan 2012
Location: Ko Olina, Oahu, Hawaii
Boat: Hudson Force 50
Posts: 124
Re: What is this?

It's a capaciter. I had one installed aftermarket on my former boat by the original owner. It was used to prevent electrical surge to electronic components.

The Witchdoctor.
__________________

__________________
medicrene is offline   Reply With Quote
Reply

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
As Far as Boats are Concerned What are Your 3 Biggest Headaches ? Matthew Bradley Monohull Sailboats 103 01-03-2012 00:27
Skymap - How awesome is this ? anjou Navigation 48 25-02-2012 17:50
What is this ? arjand Electrical: Batteries, Generators & Solar 28 24-02-2012 03:13
Opinions on this Hull ... sharpey Construction, Maintenance & Refit 1 24-02-2012 02:42
Possible Hull Integrity Problems ... What do you think ? (with pics) SeaSloth Construction, Maintenance & Refit 13 23-02-2012 20:20



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 15:17.


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.