What Size Circuit Breaker is Recommended for 8 Gauge Wire
Updated 01/05/2015 | Published 01/04/2015
Products Featured in This Question
Question:
Rewiring older travel trailer. I have a 40amp converter/charger going to an old style resettable breaker on an 8 ga wire. The wire from my battery to this is also 8 ga. 1. What size /type of breaker do I need 2. Can I mount it in my battery box, or does it need to be upstream charger side of both my battery and my TV pigtail also wired to charge my house batt.? Also the existing junction box needs to be replaced...any suggestions?
asked by: David B
Expert Reply:
The circuit breaker I recommend is the 40-amp circuit breaker # 9510, it is .66 inches long and may fit inside a junction box easier. However, the place I would mount it is between the charger and the battery on the trailer side.
The junction box I recommend is the Pollack # PK52249 as it provides neat, clean mounting point for multiple circuit breakers. The measurements are 7-1/2 inches long and 2-1/2 tall. See diagram to the right.
Product Page this Question was Asked From
Pollak Circuit Breaker - 60 Amp - Surface Mount - Manual Reset - Plastic - Type III
- Accessories and Parts
- Wiring
- Circuit Breaker
- 60 Amp
- Pollak
more information >
Continue Researching
- Shop: Trailer Wiring
- Search Results: junction box
- Video: Detailed Breakdown of the Pollak 7-Circuit-Breaker Junction Box
- Search Results: 7 way plug
- Video: Review of the EZ Connector Magnetic 7-Way Trailer Connectors w/ Watertight Seal
- Shop: EZ Connector Magnetic 7-Way Trailer Connectors w/ Watertight Seal - Hardwire - Vehicle/Trailer End
- Shop: EZ Connector Magnetic 7-Way Trailer Connector with 4' Long Cable - Watertight Seal - Trailer End
- Shop: Pollak 7-Circuit-Breaker Junction Box
- Shop: Trailer Wiring Junction Box - 7 Color Coded Terminals - ABS
- Search Results: coiled cable
- Search Results: 7 way connector coiled cable
- Shop: EZ Connector Magnetic 7-Way Trailer Connector - Hardwire - Vehicle End
- Shop: Pollak 6-Pole, Round Pin, Plastic Wiring Socket w/ Rubber Boot - Vehicle End
- Shop: etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector
- Shop: Vehicle Tow Bar Wiring
- Q&A: Battery Management System To Charge All Batteries Types On A Trailer From Solar, Shore, and Vehicle
- Video: A Closer Look at the 30 amp. In-Line Circuit Breaker
- Q&A: Trailer Brake Lights Kick Off While Running Lights Are On
- Q&A: What Are The Dimensions Of The Pollak 7-Circuit-Breaker Junction Box # PK52249
- Q&A: Why Are Their 7 and 10 Terminal Junction Boxes Made for Trailer Wiring
- Q&A: Recommended Wiring, Junction Box, And Breakaway Kit For 18-Ft Tandem Flat Bed Trailer
- Q&A: Converting European 7 Way on Trailer to Work with US 4 Way on Lexus GX460
- Q&A: Recommended Flat Tow Braking System for a Jeep Wrangler
- Article: Brake Controller Installation on a Ford Full-Size Van