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:
phemens

Montreal, Canada

Senior Member

Joined: 09/18/2006

View Profile


Offline
Posted: 08/28/19 10:49am Link  |  Quote  |  Print  |  Notify Moderator

Interesting product. Unfortunately for us poor canucks the shipping cost exceeds the product cost....

MEXICOWANDERER wrote:

[image]


DLO
Diesel locomotive cable

https://skycraftsurplus.com/20-awg-dlo-2-kv-black-blk-20-awg-rp5878.html

It is the best quality cable I have ever used. Notice the multi sheathing. The outermost layer may be a much as 10-times tougher to cut or abrade than the stuff West Marine or Genuine Dealz, sell.

The inner layers are water and gas-proof. Acid proof, chemical proof.

I use RED shrink tubing to ID positive cables. DLO cable is black.

The tin plating is three times as thick as what's on, Anchor Wire

Rope stranding for best ampacity.

And Skycraft sells it at 50% off.

But 30' is the minimum purchase of 2/0 size

3/0 rated terminals highly recommended because 2/0 won't fit. Way too tight.

Far and away better cable than simple welding cable which has sheathing that has no cut or abrasion resistance.

Skycraft is in FL. The wire ships from a west coast warehouse.



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

Lwiddis

Morro Bay, CA

Senior Member

Joined: 08/12/2016

View Profile



Good Sam RV Club Member

Offline
Posted: 08/28/19 11:05am Link  |  Quote  |  Print  |  Notify Moderator

Very interesting, Mex.


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, 300 watts solar-parallel & MPPT, Trojan T-125s. TALL pole for flags. Prefer USFS, COE, BLM, NPS, TVA, USF&WS, state & county camps. Bicyclist! 14 year Army vet - 11B40 then 11A - (MOS 1542 & 1560)


2oldman

Ca

Senior Member

Joined: 04/15/2001

View Profile


Online
Posted: 08/28/19 11:19am Link  |  Quote  |  Print  |  Notify Moderator

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.

phemens

Montreal, Canada

Senior Member

Joined: 09/18/2006

View Profile


Offline
Posted: 08/28/19 11:41am Link  |  Quote  |  Print  |  Notify Moderator

well, the fat cables are already sunk cost, and with Lithium the voltage isn't really a factor. I don't have any long wire runs, my longest cable is the one from the bus to the inverter and that's 2 feet (vs. 1.5 feet for each of the batteries). No business case there for me [emoticon]

2oldman

Ca

Senior Member

Joined: 04/15/2001

View Profile


Online
Posted: 08/28/19 11:43am Link  |  Quote  |  Print  |  Notify Moderator

phemens wrote:

and with Lithium the voltage isn't really a factor.
No, but the amperage is.

phemens

Montreal, Canada

Senior Member

Joined: 09/18/2006

View Profile


Offline
Posted: 08/28/19 12:31pm Link  |  Quote  |  Print  |  Notify Moderator

For amperage I can draw max 100 amps per battery, in parallel that gives me 500 amps theoretical. Max draw from the inverter is about 250 amps (excluding very short duration peak 6000 watts but I'll never reach that with any equipment I'm currently carrying).

Chris Bryant

Arden, North Carolina

Senior Member

Joined: 03/26/2003

View Profile



Posted: 08/28/19 12:38pm Link  |  Quote  |  Print  |  Notify Moderator

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.


-- Chris Bryant

MEXICOWANDERER

las peñas, michoacan, mexico

Senior Member

Joined: 06/01/2007

View Profile


Offline
Posted: 08/28/19 12:59pm Link  |  Quote  |  Print  |  Notify Moderator

Hyper amperage may affect ampacity but batteries automatically lose that as their load is increased.

With a 200 amp inverter draw from 4 three cell gc220's and the inverter 10 feet distant from the batteries an increase from 2/0 to 4/0 cabling may allow for perhaps a 10 amp increase. Irrelevant. Some of the limiting factors are design limits of battery values with regard to CCA

My system is 24 cells 28 volts and 350 MCM cable. Utter maximum of 720 amperes charge rate with the generator itself as the limiter >17 Kw. There is almost zero voltage drop. Similarly under design limit extraction by the 4024 inverter voltage drop throughout the system is <.9 volts.

2oldman

Ca

Senior Member

Joined: 04/15/2001

View Profile


Online
Posted: 08/28/19 01:04pm Link  |  Quote  |  Print  |  Notify Moderator

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 that would depend on the charge amperage, which is not likely to be hundreds of amps. And it's just one battery, not a bank.

* This post was edited 08/28/19 01:12pm by 2oldman *

MEXICOWANDERER

las peñas, michoacan, mexico

Senior Member

Joined: 06/01/2007

View Profile


Offline
Posted: 08/28/19 01:20pm Link  |  Quote  |  Print  |  Notify Moderator

[image]

Too little emphasis is given to the integrity of the lug to buss and the lug to the battery interface. With hyper amperage, these junctions are given insufficient importance.

My buss are 30" x 6" by 3/4". Gold plated by AFSCO Oakland CA. Half inch by 16 TPI 316 stainless steel hardware. f I remember correctly, both buss bars cost in excess of 400 dollars just for the gold.

I traded a redesigned 20SI Delco alternator for the plating job. It charges at 22 amps at dead idle when nothing else would. Stainless serrated 316 nuts are used.

Volt drop total is an aggregate value.

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.