A Neat Way to Join Your Outdoor Lighting CablesRunning a garden lighting circuit almost always means joining cables at some point, whether that's splitting a feed to reach two spike lights or extending a run further down a border. The JB1 is Collingwood's answer to doing that safely outdoors, a small sealed box that lets you connect and branch cables without any exposed wiring in the ground.The Parallel VersionThis is the parallel wired JB1, which means every output runs independently off the same input rather than in a chain. If one connected fitting is unplugged or develops a fault, the others keep working as normal. The box itself is moulded in blue plastic with four yellow cable glands, one marked IN and three marked OUT, and the wiring layout is printed straight onto the lid so you can see how it's connected without digging out a manual.How It Works 1 input and 1 to 3 outputs, wired in parallel Link additional JB1s together to add more outputs as your circuit grows Combined load across linked boxes is capped at 150W total, or your LED driver's rated output if that's lower Maximum input of 30V DC at up to 5A, with a maximum conductor size of 1mm² Cable glands accept a cable diameter of 5 to 6.5mm, sized specifically for H05RN-F cable Where It's UsedThe JB1 sits downstream of your LED driver, out in the garden rather than indoors. It's built for buried, wet, or otherwise exposed spots, tucked into a flower bed to branch off a couple of spike lights, run under decking to reach a step light, or fixed inline along a path lighting circuit. It's a practical way to add one or two extra fittings partway through an existing run instead of pulling a fresh cable all the way back to the driver.Collingwood LightingCollingwood has focused on LED technology since 2002, designing and manufacturing its products from Sywell in Northamptonshire. The brand says it was among the first to bring fully waterproof, sealed for life LED products to the UK electrical wholesale market, and small connectors like the JB1 are where that approach really counts, since a poor seal underground undoes everything else in the circuit. Collingwood has also been awarded a Gold medal by EcoVadis, placing it in the top 5% of companies assessed globally for sustainability.Good to Know Rated IP68, sealed against dust and continuous submersion, so it's suited to buried or wet outdoor locations Carries a 1 year warranty Designed to work only with H05RN-F cable, the type used across Collingwood's outdoor range If you need to extend a run to reach it, Collingwood's WCR275 black 2 core rubber cable is a suitable pairing Dimensions: 95mm length x 95mm width x 30mm depth. Weight: 0.1kg Questions People AskCan I use the JB1 with any outdoor cable?No. It's built around H05RN-F cable specifically, the type used throughout Collingwood's outdoor range, so the glands and conductor size are matched to it.How many fittings can one JB1 handle?Each JB1 has 1 input and up to 3 outputs. You can link further JB1s together for more outputs, as long as the total load stays within 150W or your driver's rated output.Is it safe to bury the JB1 in soil?Yes. It's rated IP68, meaning it's sealed against dust and can withstand continuous submersion, which makes it suitable for burial or other wet outdoor spots.What happens if I go over the 150W limit across linked boxes?You risk overloading the driver or the connections in the JB1 itself. Keep the combined load within your driver's rated output and the JB1's 150W total across any linked run.What if my cable run doesn't reach the JB1?Collingwood's WCR275 black 2 core rubber cable is designed to extend a run and pair with the JB1.
