The Tycab 4mm 3 Core Marine Cable 30 m spool gives you enough length to wire lights, pumps and control gear across a small trailer boat or cabin cruiser without joins every 2 m. Three separate 4 mm² cores let you handle positives for two loads plus a common return in one jacket, handy when you are chasing circuits through 20 mm conduit runs or tight gunwale spaces. The fine-strand copper conductors in each 4 mm² core help keep voltage drop down on 12 V and 24 V marine systems over runs up to roughly 10 m. The marine-grade PVC insulation and outer sheath are built to handle typical bilge and cabin temperatures from around -20°C to 70°C. The 30 m spooled length is a smart buy if you are running several new circuits on one boat or wiring a couple of smaller setups in the shed.

• Tycab 4mm 3 Core Marine Cable

• 4 mm² cross-sectional area per core

• Three conductors within a single outer sheath

• Supplied on a continuous 30 m spool

• Suits 12V and 24V marine electrical systems

• Ideal for lights, pumps and control circuits

• Fine stranded copper conductors for lower resistance

• Marine-grade insulated and sheathed construction

• Compact profile for gunwale and conduit runs

• Part number CB004M3-030 in 4mm cable range

Q: Can this 4mm 3 core marine cable be used on both 12V and 24V systems?

Yes, this 4mm 3 core marine cable suits both 12V and 24V systems. The 4 mm² copper conductors handle typical accessory loads on either voltage. Lower resistance across each core helps keep voltage drop under control on longer circuits. Just match the circuit fuse size and load current to standard marine wiring practice.

Q: Is the 30m spooled length supplied as one continuous cable?

Yes, the 30m marine cable is supplied as one continuous length on a spool. A single unbroken run helps reduce connection points and potential weak spots in your wiring. It also gives you flexibility to cut exact lengths for each circuit. This is handy when planning switch panels and junction points around the boat.

Q: Can I run multiple accessories through this 3 core cable?

Yes, you can run multiple accessories through this 3 core cable if each core is sized correctly for the load. Many setups use one core for positive feed, one for a second circuit, and one as a shared return. Always calculate total current on each core. Keep within the current rating normally applied to 4 mm² marine cable.

Q: Is this cable suitable for concealed runs under decks and behind linings?

Yes, this cable is suitable for concealed runs under decks and behind linings. The marine-grade insulation and outer sheath are made for fixed wiring in protected spaces. Secure the cable with appropriate clips or saddles along the run. Avoid sharp edges or moving parts that could damage the sheath over time.