Ultimate DIY Busbar System (100mm²)
Print Profile(1)
Description
Ultimate DIY Busbar System (100mm²) | High-Current Power Distro
This is a professional-grade, 5-part modular busbar system designed for extreme DIY electrical builds (RV, Solar, Marine). It uses a massive 100mm² copper core (20x5mm) and includes specialized tools for perfect assembly.
What's in the Box? (5 STL Files)
- Busbar Body: Main structural base designed for 4 bolts: 2x M8x30 and 2x M8x25.
- Top Cover (+): Safety lid with embossed "PLUS" marking for easy identification.
- Top Cover (-): Safety lid with embossed "MINUS" marking.
- Bolt Cap: Inserts to seat and secure the screws connecting the Top to the Body.
- HoleAligner (Tool): A precision drilling jig. Use this to mark and drill perfectly centered holes in your 20x5mm copper bar. No more misaligned bolts!
Hardware Requirements
To assemble this beast, you will need:
- Copper Bar: 100mm x 20mm x 5mm (M1E Z4 / Cu-ETP).
- Main Bolts: 2x M8x30mm and 2x M8x25mm (Stainless Steel recommended).
- Assembly: 4x M8 Washers and Spring Washers for vibration resistance (crucial for vans!).
Technical Performance (12V/24V/48V DC)
- Rated Current: 250A (Continuous).
- Maximum Load: 320A (Max continuous with ASA/PC housing).
- Surge Capacity: 500A (Short bursts).
- Resistance: Ultra-low voltage drop due to $100mm^2$ cross-section.
Recommended Print Settings
- Material: ASA is mandatory (UV and High-Temp resistant). Avoid PLA/PETG for high-current applications.
- Walls: 4+ loops for structural strength.
- Infill: 40% (Gyroid) or higher.
- Support: Minimal supports may be needed for the Bolt Cap depending on your printer's bridging performance.
Assembly Tips
- Use the HoleAligner to mark the copper bar. Use a center punch before drilling.
- Start with a 3mm pilot hole, then finish with an 8.5mm or 9mm drill bit for the copper.
- Deburr the holes in the copper to ensure a flat, low-resistance connection with the lugs.
- Torque the M8 bolts to 8-10 Nm.
Safety Disclaimer
Designed for high-current systems. Always use a main fuse. Build and use at your own risk.
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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