RV.Net Open Roads Forum: Tech Issues: Bus Bars - 150A rated ok?

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Tech Issues

Open Roads Forum  >  Tech Issues

 > Bus Bars - 150A rated ok?

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 5  
Prev  |  Next
Sponsored By:
GordonThree

Northern Michigan

Senior Member

Joined: 05/19/2013

View Profile


Offline
Posted: 08/28/19 01:45pm Link  |  Quote  |  Print  |  Notify Moderator

Why would a very low voltage DC application need cable as heavily insulated as that locomotive cable?


2013 KZ Sportsmen Classic 200, 20 ft TT
2017 Ram 2500 4x4, 6.4 HEMI, 4.10 / Auto

pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 08/28/19 02:19pm Link  |  Quote  |  Print  |  Notify Moderator

2oldman wrote:

Wish I could talk you into higher voltage so you wouldn't have to mess with this fat cable and long wire runs. But with 5 batteries that won't work so well.


X2


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

2oldman

Ca

Senior Member

Joined: 04/15/2001

View Profile


Offline
Posted: 08/28/19 02:21pm Link  |  Quote  |  Print  |  Notify Moderator

GordonThree wrote:

Why would a very low voltage DC application need cable as heavily insulated as that locomotive cable?
It doesn't. It appears that cable is designed for harsh duty like chemical spills and proximity to sharp things.

I was looking for busbars (distribution blocks) with screw terminals which makes connections very easy. When I was in the 4/0 business I used screw terminal blade connectors. Very nice. Never came loose.

time2roll

Southern California

Senior Member

Joined: 03/21/2005

View Profile



Good Sam RV Club Member


Posted: 08/28/19 03:13pm Link  |  Quote  |  Print  |  Notify Moderator

phemens wrote:

Ordered 2x Blue Seas 250A 4 post (for distribution), and 2x Blue Seas 250A 6 post for batteries. No more weak links (putting aside the human factor [emoticon]
Probably fine. I was about to recommend the 600 amp.


2001 F150 SuperCrew
2006 Keystone Springdale 249FWBHLS
675w Solar pictures back up

pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 08/28/19 03:55pm Link  |  Quote  |  Print  |  Notify Moderator

Hi Chris,

Yes, you are correct.

There are built in battery management systems which may (or may not) mitigate the differences.


Chris Bryant wrote:

If I am understanding correctly, the battery bank with the 4/0 cable will discharge and recharge faster, thus be stressed more.
I’m sure the difference can be calculated.


phemens

Montreal, Canada

Senior Member

Joined: 09/18/2006

View Profile


Offline
Posted: 08/28/19 04:03pm Link  |  Quote  |  Print  |  Notify Moderator

the 600 amp bars seemed a little bit overkill - 4 of them would pay for another battery! So far I've not seen a draw over 230 amps on the inverter, so I think 250 should be fine.


2012 Dutchman Denali 324LBS behind a 2006 Ford F-250 V10 out of Montreal
1 DW, 1 DD, 1 DS, 2 HD (Hyper Dogs)
1Kw solar, 500 AH LIFePO4, Yamaha EF2000 gen, Samlex 3000w Inverter

2oldman

Ca

Senior Member

Joined: 04/15/2001

View Profile


Offline
Posted: 08/28/19 04:28pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

(re: 4/0 cable vs 2/0) Yes, you are correct.

There are built in battery management systems which may (or may not) mitigate the differences.
I think I have to question your answer piano.

Assuming the charge rate is say, 100amps, that's 20 amp/battery. Are you saying the slightly different resistance of the 4/0 vs 2/0 is going to make any significant difference?

As for discharge, yes, at hundreds of amps there could be a bit more difference.

wa8yxm

Wherever I happen to park

Senior Member

Joined: 07/04/2006

View Profile


Offline
Posted: 08/28/19 04:34pm Link  |  Quote  |  Print  |  Notify Moderator

Let me put it this way. 3,000 watt inverter draws close to 300 amps perhaps a tad more at startup but at full load it will be sucking roughly 300 amps (Divide by 10.. note it is not accurate at thousands of watts but it's close enough for estimating load) My 2000 watt can hit 220 amps.


Home is where I park it.
Kenwood TS-2000 housed in a 2005 Damon Intruder 377


pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 08/28/19 06:36pm Link  |  Quote  |  Print  |  Notify Moderator

2oldman,

If there is a difference in resistance--then it affects how the batteries charge. LI? Well I don't know. But flooded or agm--for sure it makes a small difference.

time2roll

Southern California

Senior Member

Joined: 03/21/2005

View Profile



Good Sam RV Club Member


Posted: 08/28/19 07:22pm Link  |  Quote  |  Print  |  Notify Moderator

phemens wrote:

the 600 amp bars seemed a little bit overkill - 4 of them would pay for another battery! So far I've not seen a draw over 230 amps on the inverter, so I think 250 should be fine.
Seems odd to have 4 bus bars.

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 5  
Prev  |  Next

Open Roads Forum  >  Tech Issues

 > Bus Bars - 150A rated ok?
Search:   Advanced Search

Search only in Tech Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2020 CWI, Inc. © 2020 Good Sam Enterprises, LLC. All Rights Reserved.