Can I connect two 8B&S extension leads together to get more length?

Yes, Anderson-style connectors make daisy-chaining leads simple and secure. However, keep in mind that total cable distance directly increases electrical resistance. While heavy-duty 8B&S cable handles runs up to 10m–15m with minimal loss for moderate loads, chaining multiple cables for high-draw appliances (such as large inverters) will compound voltage drop. For best performance, choose a single lead matching your required distance.

Why use 8B&S cable instead of standard 6mm automotive wire?

Wire sizing terminology can be misleading. Standard "6mm automotive cable" actually refers to the outer insulation diameter, which often contains only ~4.5mm² of copper. In contrast, 8B&S features 7.9mm² of pure copper conductor area—nearly 75% more conductive material. This extra thickness dramatically cuts electrical resistance, prevents heat buildup, and stops fridges or solar panels from underperforming over distance.

Do I still need an inline fuse when using an 8B&S extension lead?

Absolutely. While 8B&S cable is rated for continuous current up to 50A, a fuse protects your wiring and vehicle battery against dead shorts caused by pinched cables, physical damage, or component failure. Always install an inline fuse (such as a 40A or 50A Maxi fuse) as close as possible to the positive battery terminal or power supply before the extension run.

Why Voltage Drop Is Killing Your 12V Setup (And Why Cable Gauge Matter

Every camper has experienced it: your 12V fridge starts error-coding, your camp lights flicker, or your solar regulator claims your battery is fully charged while your fridge compressor refuses to kick in. In most cases, your battery and fridge are completely fine. The real culprit is voltage drop caused by undersized wiring.

What is Voltage Drop?

Direct current (DC) electricity faces natural resistance as it travels along a copper wire. Over longer distances, or under heavy electrical loads, that resistance causes usable voltage to drop before reaching your appliance.

A 12V compressor fridge, for instance, requires clean, consistent power. When your battery sits at 12.6V but resistance along a thin cable drops the voltage at the plug down to 10.5V, the fridge’s internal low-voltage cutoff trips to protect the battery. The result? Spoiled food and warm drinks.

Why 8B&S Cable Is the Sweet Spot

Many off-the-shelf extension leads use standard 3mm or 4mm automotive wire (often around 12 to 16 AWG). While fine for small LED camp lights, they create severe resistance when powering higher-draw accessories or extending solar runs.

8B&S cable (~8 AWG / 7.9mm² cross-section) delivers significantly less electrical resistance:

Minimal Voltage Loss: Keeps voltage stable across 2.5m, 5m, or 10m runs.
Higher Current Capacity: Safely handles up to 50A continuous loads without overheating.
Maximum Solar Harvest: Allows you to park your 4WD in the shade while placing your solar blanket or folding panel 5m to 10m away in full sun, without sacrificing precious amps.

Choosing the Right Length for Your Rig

1m Lead: Perfect for clean, short links between battery boxes, control hubs, and DCDC chargers where space is tight.
2.5m Lead: The go-to length for running a fridge inside a canopy, wagon, or camper trailer.
5m & 10m Leads: Essential for remote solar setups. Extend your folding solar panel or solar blanket into peak sunlight while keeping your vehicle cool under campsite shade.

Browse the KickAss range of KickAss 8B&S Extension Leads.

Plug-and-Play Anderson Connections

Twisted bare wires and cigarette sockets rattle loose on corrugated tracks and introduce high resistance. Pre-crimped genuine-style Anderson connectors lock securely in place, withstand extreme vibration, and ensure an airtight, low-resistance electrical connection every time.

Camp Tip: Pair your extension leads with a KickAss Inline Maxi Fuse close to your power source to ensure your vehicle and wiring stay protected against accidental shorts.