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?
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...