Cable Management

Cable Management for Solar, 12V and 24V Systems

Good cable management keeps wiring protected, tidy and easy to service for its whole working life. This range covers the three main points where cabling is exposed: where it passes through a roof or wall, where it runs through chassis rails, engine bays or cabinetry, and where it is terminated at lugs and connectors. It suits solar installs on caravans, RVs, boats, 4WDs, trucks, tiny homes and off-grid sheds.

Roof and Wall Entry Protection

Solar cable has to pass through the roof somewhere, and that penetration needs to be sealed and shielded from UV and road vibration. Our cable entry covers include clamshell styles in small, medium, large and XL sizes, finished in black, white or stainless steel to match the roof. There are also lightweight ABS covers with one or two cable glands, and dedicated solar connector entry covers that let MC4-style connectors pass through. For lighter-duty pass-throughs, a 20mm multiple gland rubber grommet with 2 x 6mm holes provides a neat, protected route for twin cables.

Split Tube Conduit for Cable Runs

Black split tube flexible conduit guards cable against abrasion, sharp edges and heat along chassis rails, through engine bays and behind panels. The slit design lets you lay cable in after it has been routed, which makes retrofits and additions much simpler. Internal diameters run from 7mm to 36mm. Each size is sold per metre, and rolls of up to 200m are available for workshop and fleet use.

Glue-Lined Heat Shrink for Sealed Terminations

Hellermann Tyton 3:1 dual wall heat shrink has an adhesive lining that melts and flows as it shrinks. This seals the joint against moisture and gives strain relief at crimped lugs and splices. Red and black options let you mark positive and negative at a glance. Each length is 1.2m. For shrink ratios, sizing and application tips, see our technical guide to dual wall adhesive-lined heat shrink tubing.

Compatibility Notes

• Heat shrink to cable size: 9-3mm suits 8B&S, 12-4mm suits 6B&S, 18-6mm suits 25mm² to 70mm², and 24-8mm suits 95mm². The 6-2mm size suits smaller automotive cable and connector joints.
• Conduit sizing: Choose an internal diameter slightly larger than the combined bundle so the split closes fully. Allow extra room for future circuits.
• Entry cover selection: Match gland count and hole size to your solar cable. Twin-core runs usually suit a single gland, while separate positive and negative leads suit two-gland covers. Use connector covers where plugs must pass through intact.
• Mounting: Fit roof covers to a clean, flat surface with a suitable roof-grade sealant or adhesive tape. Avoid fasteners that may penetrate fibreglass or aluminium skins unsealed.
• Marine and 4WD use: Pair glue-lined heat shrink with tinned lugs on any terminals exposed to salt, spray or dust.

Protect your wiring from the roof entry to the battery terminal. Pick the entry cover, conduit size and heat shrink that suit your cable gauge and order them together to finish your solar or 12V install properly the first time.