AMC 40mm² Black Flexible Battery Starter Cable 30m PVC40.30.B
PVC40.30.B
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AMC 40mm² Flexible Battery Cable
Black PVC Sheath | 30 Metre Reel | SKU PVC40.30.B
AMC flexible 40 mm² battery cable supplied as a continuous 30 metre black reel. Its fine-stranded conductor is designed to route more easily than rigid power cable in high-current battery, starter and distribution installations.
Key Features
- Fine-stranded flexible conductor for easier routing
- 40 mm² conductor cross-section
- Black PVC outer sheath
- 30 metre continuous reel
- Low resistance for correctly designed high-current circuits
Technical Specs
| Conductor size | 40 mm² |
| Nominal current rating | 300 A catalogue figure |
| Conductor construction | 539 × 0.30 mm strands |
| Length | 30 m (98.4 ft) |
| Colour | Black |
| Maximum outside diameter | 12.7 mm |
| Maximum resistance at 20°C | 0.00050 Ω/m |
Compatibility / Fitment Guide
This is a universal electrical cable, not an engine-specific part. Compatibility is established by electrical load, total circuit length, voltage drop, installation conditions and terminal size.
| System voltage | Low-voltage DC battery systems where 40 mm² cable is confirmed by calculation and equipment instructions. |
| Typical circuits | Battery negative returns, bonding to a specified negative bus, starter returns and high-current DC interconnects. Black is normally used for DC negative/return identification. |
| Required sizing check | Calculate with the maximum circuit current, the full positive-and-return conductor length, permitted voltage drop, duty cycle, ambient temperature and any bundling or engine-space derating. |
| Termination | Use crimp lugs made for 40 mm² cable and the terminal stud size. Crimp with the correct calibrated hex or hydraulic tooling, support the cable mechanically and seal exposed joints with adhesive-lined heat-shrink. |
| Polarity identification | Black normally identifies DC negative/return. Verify the existing vessel wiring convention; do not rely on colour alone on older or modified installations. |
| Do not select by | Engine horsepower or the catalogue amp figure alone. Confirm the engine/battery manufacturer's cable-size table and the applicable marine electrical standard before installation. |
Important: Do not infer that 40 mm² is suitable for every 300 A circuit. Long runs, continuous loads, hot engine spaces and bundled cable can require a larger cross-section.
Part Number Cross Reference
| AMC / manufacturer code | PVC40.30.B |
| 4Boats SKU | PVC40.30.B |
| Size / reel / colour | 40 mm² / 30 m / Black |
Use the exact SKU, conductor size, reel length and sheath colour when matching this product. Similar-looking cable from the same range may have a different cross-section or reel length.
Frequently Asked Questions
Can I choose this cable from the amp rating alone?
No. The stated figure is a nominal catalogue rating. Safe installation depends on circuit length, allowable voltage drop, duty, temperature, bundling, protection and the equipment manufacturer's instructions.
How is cable-run length measured?
For voltage-drop calculations use the complete current path: the positive feed plus the negative return, unless your chosen calculator explicitly asks for one-way length.
Are terminals included?
No. This listing is for cable on a reel. Select lugs separately to match the conductor cross-section and each terminal's stud diameter.
Can unused cable be installed as AC mains wiring?
No assumption should be made from conductor size alone. Use it only within the product's stated voltage/application rating and the applicable wiring standard.
Installation note: Isolate all power sources before work. Protect positive conductors as required by the equipment manufacturer and applicable marine standard, while observing any specific starter-circuit provisions.
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