Thread Tools Search this Thread Display Modes
Old 01-02-2015, 11:04 PM   #1
4 Rivet Member
trekerboy's Avatar
1979 31' Excella 500
Charlevoix , Michigan
Join Date: Aug 2014
Posts: 340
Inline Resettable DC Circuit Breaker and Distribution Block

I'm guessing Lewster and the rest of the regulars on this forum will have a lot to say on this one!

I'm in the process of designing the electrical system for our '79 Excella 500 renovation. I'll be using a bank of 6V batteries tied together in Series-Parallel to provide 12V power. Before running the 12V line to the DC distribution panel (of which I'm using this WFCO 8930/50 AC/DC combo unit) I want to place a fuse and voltage meter inline. Here's a graphic to illustrate what I'm talking about...

Click image for larger version

Name:	Screen Shot 2015-01-02 at 11.29.40 PM.png
Views:	128
Size:	214.8 KB
ID:	229704

Related to this diagram, I have a few questions:
  1. For the fuse, I'm considering a resettable "breaker" instead of a traditional glass fuse that was installed in the camper originally. Here's the resettable unit I'm considering on eBay. Do you foresee any problem using a resettable breaker like this instead of a regular fuse? Also, since my camper wiring is 30Amp, I'm guessing I should use a 30Amp breaker here... is that correct?
  2. For the Voltage Meter, I don't need anything fancy, just something to give me a readout when I've got my head in the box instead of having to run to the front of the camper to see the other display. For this, I'm considering this unit on eBay. Do you foresee any problems with this type of voltage meter being placed inline between the fuse/breaker and DC distribution panel? Or should I look at something that's NOT inline, like this unit?
  3. For the Series-Parallel wiring inside the box of 6V batteries, Lewster recommended the use of AWG 4/0 "Welding Cable" to connect all the batteries. What gauge wire should I be using for the cables that come from the battery bank to the fuse, voltage meter, then to the DC distribution panel? I know it depends on distance, and for that reason everything (inverter, charger, transfer switch, DC distribution panel, battery bank) will be very close together, within a few feet. Do I need AWG 4/0 all the way to the DC Distribution panel, or can I use a smaller gauge once I'm outside the battery bank?
  4. Lastly, and Inverter related question, and I think I know the answer to this but want a sense check from the folks here... Should I connect my inverter directly to my battery bank (before any fuses/breakers) or should it be connected after the fuse/breaker My inverter/charger has built in resettable breakers for both AC and DC circuits.
trekerboy is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Broken Fuse Block In Distribution Panel - How Best To Repair montanaandy Batteries, Univolts, Converters & Inverters 12 06-01-2015 09:01 PM
What is this and is it important- inline fuse? RichHog Lights - Interior & Exterior 3 09-04-2014 11:21 PM
Air conditioning and the 30 amp circuit breaker in a 2014 27FB Rocinante Batteries, Univolts, Converters & Inverters 15 07-08-2014 10:37 PM
Question about ground block for Dometic circuit board Lothlorian Electrical - Systems, Generators, Batteries & Solar 2 08-27-2011 11:28 AM
New circuit breaker strip FrankR Electrical - Systems, Generators, Batteries & Solar 0 03-27-2002 11:25 PM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:31 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.