Sea-Dog 8021010
2/0 AWG • black jacket • 25-foot spool of tinned, fine-strand marine battery cable.
Sea-Dog 2/0 vs 4/0 AWG Marine Battery Cable Spool Guide
For higher-current marine battery runs, Sea-Dog supplies tinned-copper bulk cable in 2/0 and heavier 4/0 AWG sizes. These are unfinished spool products rather than factory-crimped battery leads. The correct gauge depends on load, cable length, voltage drop and installation requirements, while the part number identifies the supplied colour and length.
Compare available cable gauges and spool lengths
The exact MPN determines the wire size and the length supplied. All products listed are bulk, unassembled marine cable, not completed battery leads.
| Sea-Dog MPN | Wire gauge | Jacket colour | Spool length | End style |
|---|---|---|---|---|
| 8021010 | 2/0 AWG | Black | 25 ft | Unterminated bulk cable |
| 8021011 | 2/0 AWG | Black | 50 ft | Unterminated bulk cable |
| 8021012 | 2/0 AWG | Black | 100 ft | Unterminated bulk cable |
| 8021020 | 2/0 AWG | Red | 25 ft | Unterminated bulk cable |
| 8021021 | 2/0 AWG | Red | 50 ft | Unterminated bulk cable |
| 8021022 | 2/0 AWG | Red | 100 ft | Unterminated bulk cable |
| 8021031 | 2/0 AWG | Yellow | 50 ft | Unterminated bulk cable |
| 8021032 | 2/0 AWG | Yellow | 100 ft | Unterminated bulk cable |
| 8041010 | 4/0 AWG | Black | 25 ft | Unterminated bulk cable |
| 8041011 | 4/0 AWG | Black | 50 ft | Unterminated bulk cable |
| 8041020 | 4/0 AWG | Red | 25 ft | Unterminated bulk cable |
| 8041021 | 4/0 AWG | Red | 50 ft | Unterminated bulk cable |
| 8041022 | 4/0 AWG | Red | 100 ft | Unterminated bulk cable |
| 8041032 | 4/0 AWG | Yellow | 100 ft | Unterminated bulk cable |
Gauge selection matters. 2/0 AWG and 4/0 AWG both require equipment and lugs sized for their actual conductor diameters; 4/0 is the larger. No universal ampacity is stated here because permitted current depends on installation conditions, insulation temperature and cable length.
Common marine cable construction
Sea-Dog specifies annealed, finely stranded tinned copper for corrosion resistance and flexibility in marine installations. Its battery cable is oil-resistant, UL-listed boat cable, made in the USA, with a published 600V insulation rating and temperature ratings of 105°C dry / 75°C wet. This is bulk cable without fitted battery lugs, clamps or auxiliary wires.
The Sea-Dog battery cable manufacturer's chart identifies the gauges, colour combinations, spool lengths and standard packs.
Choosing cable for the intended electrical circuit
- Determine the required AWG size from the equipment specifications and the circuit's conductor-sizing calculation. Gauge alone does not establish a safe universal amp rating.
- Measure the complete routing length, including slack and service loops; select the manufacturer-listed spool length that will cover the installation.
- Use the correct insulation colour for the intended circuit and applicable marine wiring conventions, while verifying the actual polarity independently.
- Choose compatible lugs, correct crimping tools and adhesive heat shrink for the cable gauge and stud diameter. These bulk cables are supplied with bare, unterminated ends.
- Verify cable protection, overcurrent devices, abrasion prevention and approved routing before energizing the battery circuit.
Find the matching marine battery cable
These are online-order items supplied from warehouse inventory. NewRVParts does not offer in-person product viewing or pickup.
Black cable spools
Sea-Dog 8021011
2/0 AWG • black jacket • 50-foot spool of tinned, fine-strand marine battery cable.
Sea-Dog 8021012
2/0 AWG • black jacket • 100-foot spool of tinned, fine-strand marine battery cable.
Sea-Dog 8041010
4/0 AWG • black jacket • 25-foot spool of tinned, fine-strand marine battery cable.
Sea-Dog 8041011
4/0 AWG • black jacket • 50-foot spool of tinned, fine-strand marine battery cable.
Red cable spools
Sea-Dog 8021020
2/0 AWG • red jacket • 25-foot spool of tinned, fine-strand marine battery cable.
Sea-Dog 8021021
2/0 AWG • red jacket • 50-foot spool of tinned, fine-strand marine battery cable.
Sea-Dog 8021022
2/0 AWG • red jacket • 100-foot spool of tinned, fine-strand marine battery cable.
Sea-Dog 8041020
4/0 AWG • red jacket • 25-foot spool of tinned, fine-strand marine battery cable.
Sea-Dog 8041021
4/0 AWG • red jacket • 50-foot spool of tinned, fine-strand marine battery cable.
Sea-Dog 8041022
4/0 AWG • red jacket • 100-foot spool of tinned, fine-strand marine battery cable.
Yellow cable spools
Sea-Dog 8021031
2/0 AWG • yellow jacket • 50-foot spool of tinned, fine-strand marine battery cable.
Sea-Dog 8021032
2/0 AWG • yellow jacket • 100-foot spool of tinned, fine-strand marine battery cable.
Sea-Dog 8041032
4/0 AWG • yellow jacket • 100-foot spool of tinned, fine-strand marine battery cable.
Related marine battery wiring references
If you need a cable assembly with fitted lugs instead of bulk wire, compare Ancor marine battery cable assemblies and lug sizes. For making a correctly sized termination, see heat-shrink ring terminals by AWG and stud diameter. Sea-Dog's battery-terminal covers and cable-entry size reference covers protection around compatible finished connections.
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