I have removed an old wired alarm unit, I want to put the cables into the void in ceiling, is it safe to isolate the circuit and attach junction boxes to the cables then push up into the void?
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Debox 16A 2SL In-line Junction Box White - Screwfix
Order online at Screwfix.com. All-in-1, maintenance-free, screwless in-line junction box. With 16A, 4-pole screwless terminal block. Accommodates flat or round profile cable. Includes 2 x locking clips. Pre-cut lead-in cable entry and removable keyhole fixing lugs. Saves time and money. FREE...