Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 22-09-2021, 16:13   #1
Registered User

Join Date: Aug 2020
Posts: 29
Where’s the positive bus bar on my Catalina 42?

I’ve been searching high and low for the positive bus bar in my Catalina 42 MK ii. I found the negative bus bar right away, but the positive bus has eluded detection so far. Looking blankly at “schematic” pages in the manual that came with the boat are no help; they’re not actual schematics but more of a vague notion of where things are supposed to be.

I’ve also been using a cable tracker to trace a few circuits to the bus but haven’t found it yet.

Any Catalina 42 owners out there that may be able to help?
OrignalBudman is offline   Reply With Quote
Old 22-09-2021, 16:26   #2
Registered User
 
Stu Jackson's Avatar

Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 9,060
Re: Where’s the positive bus bar on my Catalina 42?

Hi,


Nice boat. For us C34 skippers, it's usually "our next boat!:


IIRC, and I've had my C34 for 24 years now, Catalina never did install positive bus bars. I don't know about the new 5 Series, though.


They relied on dual house banks of 4 or 8Ds for altogether too long. Positive distribution was through battery switches, with the alternator outputs going back through the switch.


Many knowledgeable skippers have revised that to better batteries and the AO going directly to the house bank.


Good luck, happy detective work, I know the feeling.


Have you been here? http://catalina42.org/assn.htm
__________________
Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, SR/FK, M25, Rocna 10 (22#) (NZ model)
Stu Jackson is offline   Reply With Quote
Old 22-09-2021, 17:07   #3
Registered User

Join Date: Mar 2020
Location: currently Chesapeake
Boat: Catalina 42
Posts: 79
Re: Where’s the positive bus bar on my Catalina 42?

My 2000 C42 has no single positive bus.

There is a single cable to the breaker panel which is distributed directly across the row of breakers.

Some circuits with multiple loads (like cabin lighting) have additional small positive bus bars downstream of the breaker. These are behind removable panels behind the starboard saloon seat.
Off Trail is offline   Reply With Quote
Old 23-09-2021, 07:46   #4
Registered User

Join Date: Aug 2020
Posts: 29
Re: Where’s the positive bus bar on my Catalina 42?

Quote:
Originally Posted by Stu Jackson View Post
Hi,

Good luck, happy detective work, I know the feeling.

Have you been here? Catalina 42/425 International Association
Thank you! I guess it’s back to the hunt. And I will for sure check that link.
OrignalBudman is offline   Reply With Quote
Old 23-09-2021, 07:49   #5
Registered User

Join Date: Aug 2020
Posts: 29
Re: Where’s the positive bus bar on my Catalina 42?

Quote:
Originally Posted by Off Trail View Post
My 2000 C42 has no single positive bus.

There is a single cable to the breaker panel which is distributed directly across the row of breakers.

Some circuits with multiple loads (like cabin lighting) have additional small positive bus bars downstream of the breaker. These are behind removable panels behind the starboard saloon seat.
i

Well that’s good news and bad news. Good in that it matches what this novice electrician is seeing. Bad in the sense that it complicates my task a bit. But now that I’m armed with this info I can get it done.

Thanks for your reply.
OrignalBudman is offline   Reply With Quote
Old 23-09-2021, 08:40   #6
Registered User

Join Date: Sep 2015
Location: East Coast Florida
Boat: Chris Craft 38 Commander 1965
Posts: 440
Re: Where’s the positive bus bar on my Catalina 42?

Positive buss bars are seldom used after the electrical system is installed. It is not for individual pieces of equipment to be attached to. Your circuit breaker or fuse panel(s) are for that. If power is need at remote sections of the boat additional sub-panels with both ground and hot (with breakers/fuses) installed in that area.

My boat does have a positive buss bar for the house batteries that allows the windlass and the generator starter to be taken off before the main hot cable goes to the master panel.

Then there are several sub-panels : one for lower station electronics and stereo, another under the aft deck for electric reels, wash down pump, fuel polisher. Another set of sub-panels for each engine handle all the electric losds needed to run the engines ( each engine it’s own) for things like exhaust overheat alarm, fuel shutoff solenoid, hour meter, synchronizer, instrument gauges. All too much to try snd run directly off the key switch. Key switch turns on a solenoid and powers up the little run panels and takes the load off the key switch and makes fusing each much easier than a bunch of inline fuses that are a hassle to deal with.
Squanderbucks is offline   Reply With Quote
Old 23-09-2021, 08:51   #7
Registered User

Join Date: Aug 2020
Posts: 29
Re: Where’s the positive bus bar on my Catalina 42?

Squanderbucks. Love the name!

Thanks much for taking the time to reply.
OrignalBudman is offline   Reply With Quote
Reply

Tags
catalina

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
LiFePO4: charge bus, load bus, buffer battery s/v Jedi Lithium Power Systems 3 07-07-2020 16:19
Galvanic isolators on positive side of 12V bus phorvati Electrical: Batteries, Generators & Solar 8 04-06-2018 15:04
Bus Bar? jhnhll Marine Electronics 36 15-01-2015 18:26
Interconnecting/Bus Bar Battery Cable Lengths - Some Closure jordiebsocal Electrical: Batteries, Generators & Solar 19 18-08-2014 11:40
Cable Size for AC Grounding Bus to DC Neg Main Bus ? Beausoleil Electrical: Batteries, Generators & Solar 1 26-10-2010 11:19

Advertise Here


All times are GMT -7. The time now is 07:24.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.