golf cart battery installation - Page 2 - SailNet Community
 2Likes
Reply
 
LinkBack Thread Tools
post #11 of 17 Old 04-30-2014
Senior Member
 
Join Date: Aug 2006
Location: Arlington, VA
Posts: 1,848
Thanks: 0
Thanked 11 Times in 9 Posts
Rep Power: 10
   
Re: golf cart battery installation

Normally, just one fuse is used for the house bank, located as close to the batteries as possible. ABYC calls for within 7 inches.

For many, the MRBF (terminal) fuses will be very convenient. For some, they may not be, due to height restrictions or other reason. There's at least one report of corrosion possibly due to out gassing from flooded batteries.

Note that only three type of fuses are acceptable for direct connection to a house battery bank: the aforementioned MRBF, the ANL (with caveats as reported by MaineSail), and the Class-T fuses which come in larger sizes and are appropriate for, e.g., large inverters. Other fuses do not have a large enough ampere interrupt capacity (AIC)....should be at least 5,000 amps.

Also, only one type of breaker meets this specification: the new Blue Sea Systems series.

You mentioned earlier that you'd connect both wires to the positive end and both to the negative end of the new battery bank. Not sure what you are thinking, but only one connection at each end is required, especially if you're going to use 1/0 or 2/0 cabling. That cable should go to either position 1 or position 2 on your switch...whichever you plan to use all the time.

Bill
btrayfors is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #12 of 17 Old 04-30-2014 Thread Starter
Senior Member
 
Join Date: Jan 2010
Location: Boston, MA
Posts: 525
Thanks: 2
Thanked 1 Time in 1 Post
Rep Power: 6
 
Re: golf cart battery installation

Ok, one fuse for the bank it is That's easier on the wallet.

The two wires is because I'm not going to replace the wires from my existing two banks. They seem quite servicable and redoing them is time and money I don't want to expend. So I have two wires now, which are probably 1/0, and I'll hook them up in parallel. The wire gauge I was asking about before was for jumpers between the batteries.

1979 Gulfstar 37 Laissez Faire
rmeador is offline  
Quote Quick Reply Share with Facebook
post #13 of 17 Old 05-01-2014
Senior Member
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,346
Thanks: 5
Thanked 129 Times in 126 Posts
Rep Power: 11
   
Re: golf cart battery installation

A bit OT but about corrosion on fittings: Other than BoeShield I hadn't seen any anti-corrosion sprays on the market in ages. Last week I found one from Rustoluem, of all the odd folks, hiding with the spray paint cans. Apparently a thin wipeable film, meant for shovel blades, tools, whatever and I'm hoping good for anything including electrical connections.
hellosailor is offline  
Quote Quick Reply Share with Facebook
post #14 of 17 Old 05-02-2014
Senior Member
 
Join Date: May 2007
Location: Toronto, Canada
Posts: 370
Thanks: 0
Thanked 24 Times in 24 Posts
Rep Power: 9
 
Re: golf cart battery installation

Quote:
Originally Posted by rmeador View Post
...My system is a mix of 1/0 (or maybe 2/0) cables to the bank plus 4/0 from the combiner to the inverter/charger. I'm thinking the jumpers should be 1/0 or 2/0 but I'm not sure which. They'll be very short, probably only about a foot.

Thanks!
Just make sure you are sizing your cables correctly. 4/0 for a combiner to charger and 1/0 or 2/0 for a jumper are overkill.
Do you mean 1 AWG not 1/0 AWG maybe?
SVTatia is offline  
Quote Quick Reply Share with Facebook
post #15 of 17 Old 05-02-2014 Thread Starter
Senior Member
 
Join Date: Jan 2010
Location: Boston, MA
Posts: 525
Thanks: 2
Thanked 1 Time in 1 Post
Rep Power: 6
 
Re: golf cart battery installation

I don't think they're overkill. I sized the one to the inverter/charger using an online calculator. It can pull about 200A fully loaded, and it's probably a 6-8' from the combiner one way. This bank also feeds the engine starter and the autopilot, which are both heavy loads, though intermittent. I've actually been thinking that my battery cables to the combiner are a little on the small side, but since there are two of them I've decided it's good enough.

1979 Gulfstar 37 Laissez Faire
rmeador is offline  
Quote Quick Reply Share with Facebook
post #16 of 17 Old 05-06-2014
Senior Member
 
Join Date: Feb 2014
Posts: 142
Thanks: 1
Thanked 5 Times in 4 Posts
Rep Power: 2
 
Re: golf cart battery installation

One note: if you draw high amperage you may want to consider clamping to the post rather then bolting to the SS studs. They studs can heat up and melt out of the lead. There is simply not enough contact area.

Shockwave is offline  
Quote Quick Reply Share with Facebook
post #17 of 17 Old 05-06-2014
Senior Member
 
Maine Sail's Avatar
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,789
Thanks: 18
Thanked 205 Times in 154 Posts
Rep Power: 16
       
Re: golf cart battery installation

Quote:
Originally Posted by Shockwave View Post
One note: if you draw high amperage you may want to consider clamping to the post rather then bolting to the SS studs. They studs can heat up and melt out of the lead. There is simply not enough contact area.

I've got 400A bow thrusters using less than the contact area on a marine battery stud post... We have starters on 800HP diesels with less contact area than a marine stud battery post and they do fine...

The ONLY time I have seen melting of terminals is from improper installation of lugs (bad crimp), improper battery nut torque, improper lug stacking or SS flat washers inserted between ring and battery..

I've never once seen a melted stud post terminal, when properly installed.

I actually dislike clamp style terminals because they tend to creep and stretch over time and tend to get loose. Many of the large cranking batteries today don't even offer clamp posts they are bolt through because of this. If I had a dime for every "clamp" post what was pinched as tight as it would go, until both ears were touching, and I could still twist it by hand......

Heck I have a 100' "Deadliest Catch" off shore fishing boat I work on with a 12' long Caterpillar diesel that uses ring terminals and has been since the boat was built...

But beyond all that lets follow the logical progression of the DC circuit and what is in the circuit for the highest amperage loads we'd see on a sailboat..

Starter - Never seen a lead clamp post on one, for ring terminals only
Battery Switch - Never seen a lead clamp post on one, for ring terminals only
Windlass - Never seen a lead clamp post on one, for ring terminals only
Bow Thruster - Never seen a lead clamp post on one, for ring terminals only
Inverter or Inverter Charger - Never seen a lead clamp post on one, for ring terminals only
ANL, Class T, MRBF Bank Fusing - Never seen a lead clamp post on one, for ring terminals only
DC Watermaker - Never seen a lead clamp post on one, for ring terminals only
HO Alternator - Never seen a lead clamp post on one, for ring terminals only
HO Battery Charger - Never seen a lead clamp post on one, for ring terminals only
High Amp Shunts - Never seen a lead clamp post on one, for ring terminals only
High Amp Busbars - Never seen a lead clamp post on one, for ring terminals only
mitiempo likes this.

______
-Maine Sail / CS-36T


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




Images In Posts Property of Compass Marine Inc.



Last edited by Maine Sail; 05-06-2014 at 09:32 AM.
Maine Sail is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Golf Cart Batteries cb32863 Electrical Systems 21 11-26-2011 09:54 PM
Battery box for two golf cart batteries prroots Electrical Systems 18 02-10-2011 06:10 AM
battery box for golf cart batteries newcruiserP10M Gear & Maintenance 3 09-26-2010 10:54 AM
Considering going to golf cart batteries oomfh Gear & Maintenance 10 07-28-2010 02:46 PM
Golf cart batteries hathanger Gear & Maintenance 8 03-13-2005 03:23 PM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome