Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 05-10-2022, 02:00 PM   #15
LoneTux's Avatar
Join Date: Aug 2015
Posts: 42
Originally Posted by Mudfrog View Post
Before closing,,, How did you load test the breakers? You stated 2 x 250 = 500. I'm trying to figure out how you worked them together to make a 500 amp protected circuit. Is the 1000W load correct?

Yeah it's complicated, I did not say everything in order to avoid unnecessary discussion.

Instead of 1 x 500 Amp circuit breaker I had 2 x 250Amp Circuit breakers protecting my inverter & 2 chargers.

The reason for this is that single 500Amp fuses were absolutely unavailable (maybe except some industrial solutions I had no access to) when I was designing the installation.

Generally I have 6 Exide Dual AGM Deep Cycle batteries, 180Ah / 1500Wh each, total 9000Wh / 1080Ah 12V.

1 Battery is in the usual battery compartment, 3 batteries are in front of the coach, 2 batteries are in the back of the coach for weight balancing (the GCWR/GVWR per axle weight limits are not as strict in the Europe as they are in the US though, so I am able to do that)

- The 3 batteries in front are protected by 2 x 200Amp fuses (or maybe 250Amp fuses, not completely sure)
- The 1 battery in the battery compartment under stairs is protected by 100 Amp fuse
- The 2 batteries mounted in the back are protected by 2 x 200Amp fuses
- All of the batteries are joined after the breakers to make one single circuit
- 8000 Watt Inverter is then connected to the joined single circuit through the protection of 2 x 250Amps breakers (total 500 Amp): I designed/predicted the maximum peak load on the inverter to be 6000 watts, which is 500Amps, hence the 500Amp breaker for peak load.

I also previously battle-tested the inverter with about 4200 Watt load with the car audio breakers and they worked at the time - years later their casings completely melted and got destroyed unfortunately.

The plastic was not designed for high temperatures at all. Shocking. What were they thinking?


Right now I think I will go for single MEGAVAL fuses since they are available in 500Amp versions currently.

I really hope these work, I am really annoyed by this.
LoneTux is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!


breaker, circuit breaker, rust

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
Air bags - do I care about them / should I plan for them immortl Trailer Towing and Tow Vehicles Discussion 11 06-13-2021 10:59 PM
Are my Positive Terminals hooked up right to the 250amp fuse CJ7365 RV Systems & Appliances 6 08-12-2016 08:07 AM
AAA, Don't trust Them! Docgeo General Discussion 14 10-24-2013 07:13 PM
If you can't trust Kellogg's who can you trust? Yaj Just Conversation 21 01-29-2012 08:27 AM
Does this seem suspicious? Bazimars Expandables, Hybrids, & Lightweights Discussion 4 08-10-2005 08:11 PM

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 06:49 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.