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Author Topic: Rewiring my boat  (Read 2145 times)

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Ron Hill

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Re: Rewiring my boat
« Reply #15 on: March 08, 2021, 02:42:57 PM »

Antoni : What I did was to take plywood cut to size and fill the battery indentations so that the battery "floor" was level. 

Then I could screw in tie down strap brackets!!

A few thoughts
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Ron Hill

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Re: Rewiring my boat
« Reply #16 on: March 08, 2021, 02:45:37 PM »

Guys : BTW that "Battery Hold Down" Mainsheet tech note article was in the May 1998 issue!!

A thought
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LogoFreak

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Re: Rewiring my boat
« Reply #17 on: March 09, 2021, 05:49:02 AM »

Antoni : What I did was to take plywood cut to size and fill the battery indentations so that the battery "floor" was level. 

Then I could screw in tie down strap brackets!!

A few thoughts

Yes that’s exactly how it is on my boat but that plywood false floor is a bit rotten so I have to re do it. I think what I’ll do instead is make two pieces of plywood to fill the indentations for the batteries and make a flush floor. That way the batteries will sit 3/4” lower, give me a bit more room.

I will be cruising with this setup this year and learning about my power useage, the plan is to move to lithium for next season. I plan on building my own Lifepo4 pack with some Winston cells. I know a couple of people that have done that and are super happy. I know I can fit 700ah of lithium in that space.
« Last Edit: March 09, 2021, 05:52:57 AM by LogoFreak »
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Antoni - Vancouver BC
1992 Catalina 34 Tall rig fin keel mk 1.5 “Polonaise”
Hull number 1179

Ekutney

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Re: Rewiring my boat
« Reply #18 on: March 09, 2021, 07:49:05 AM »

I used two pieces of wood to make the bottom of the battery compartment a flat surface.
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Ed Kutney
1986 C34
S/V Grace #42 shoal keel
Universal M-25
Magothy River
Severna Park, MD

"No one could make a greater mistake than he who did nothing because he could do only a little."
Edmund Burke

Bill Shreeves

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Re: Rewiring my boat
« Reply #19 on: March 09, 2021, 03:27:57 PM »

Remember to balance the batteries.  Don’t pull/charge from one end.

Ken,
Are you saying the positive connection on the bank to the "house" or "load" etc. should not be the same positive terminal / bus connection for the charger/alternator?
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The only thing that always works on an old boat is the owner...

Bill Shreeves
s/v "Begnnings" 1987 Shoal Draft #333
M25XPB, Worton Creek, MD

KWKloeber

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Re: Rewiring my boat
« Reply #20 on: March 09, 2021, 04:11:09 PM »

Hey Bill

What I’m saying is that the positive and negative (load and charger) should not be from the same end of the battery bank.
At a minimum they can be at opposite ends of the bank (but a star connection arrangement is better.). See reply #14.
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Twenty years from now you'll be more disappointed by the things you didn't do, than by the ones you did.
So throw off the bowlines.  Sail away from the safe harbor.  Catch the tradewinds in your sails.
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LogoFreak

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Re: Rewiring my boat
« Reply #21 on: February 17, 2022, 06:33:36 PM »

Has anyone considered a 48V house bank? I know most have 12V systems but that’s easy to solve by adding a 48-12V dc to dc converter. The advantage to going to 48V house bank for me personally is that I have an electric epropulsion outboard that also has the ability to charge a battery bank under sail, also I can upgrade my windlass to a 48V model that will require far smaller wiring. Since I am upgrading all my electrical system I don’t see a down side. Does anyone?
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Antoni - Vancouver BC
1992 Catalina 34 Tall rig fin keel mk 1.5 “Polonaise”
Hull number 1179

Ron Hill

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Re: Rewiring my boat
« Reply #22 on: February 18, 2022, 02:42:13 PM »

Antoni : Probably more logical to go for a 24V system than a 48V system!

A thought
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LogoFreak

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Re: Rewiring my boat
« Reply #23 on: February 19, 2022, 01:10:00 PM »

Care to explain why? I'm not trying to convert the boat to 24v, only the house bank. Boat systems will remain on 12v, but will be supplied with a dc to dc converter. Only thing I would likely upgrade is the windlass to a 48v model as I intend to upgrade anyway as mine is on the small side of things.

Only thing I'm not sure about is if 48v house bank is a good thing for solar or not.
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Antoni - Vancouver BC
1992 Catalina 34 Tall rig fin keel mk 1.5 “Polonaise”
Hull number 1179

Stu Jackson

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Re: Rewiring my boat
« Reply #24 on: February 20, 2022, 12:50:29 PM »

LF, there are many more discussions about alternate energy systems over on Cruisers Forum, most likely because they deal with boats that are different than our great "but essentially coastal cruisers" C34.

I did a search on "48V" there, and came up with this (I haven't read it, but did note the first paragraph talked about an earlier discussion, too, which you should be able to find).

https://www.cruisersforum.com/forums/f14/2021-2022-updates-on-48v-for-main-system-bus-255007.html

Happy researching.  :D
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Stu Jackson, C34 IA Secretary, #224 1986, "Aquavite"  Cowichan Bay, BC  Maple Bay Marina  SR/FK, M25, Rocna 10 (22#) (NZ model)

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Ron Hill

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Re: Rewiring my boat
« Reply #25 on: February 20, 2022, 01:33:26 PM »

Guys : I did the same thing as Ed (post#4) and put 3 Gp29 AGM batteries (105 AH ea.) in the MK I battery compartment.  The third battery is turned side ways. I put a picture in the Mainsheet tech notes. 
I like the AGMs as they are no maintenance and very low self discharge.

A few thoughts
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LogoFreak

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Re: Rewiring my boat
« Reply #26 on: June 21, 2022, 09:11:38 PM »

Been waiting for this thing way too long, but it’s finally here! Time to get back to this part of the refit 😁
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Antoni - Vancouver BC
1992 Catalina 34 Tall rig fin keel mk 1.5 “Polonaise”
Hull number 1179

waughoo

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Re: Rewiring my boat
« Reply #27 on: June 21, 2022, 11:18:08 PM »

Nice!!  I have been waiting for an ELCI main AC panel to put in my aft laz right by the electrical service entrance.  It will be like christmas when it shows up (perhaps literally as well as figuartively).
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Alex - Seattle, WA
91 mk1.5 #1120
Std rig w/wing keel
Universal M35
Belafonte
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