The side ends of the dense busbar trunking should be lined with double-sided adhesive tape for safety reasons. The tape must be insulated to prevent damage to the busbar's insulation layer. When applying the insulating tape, the double-sided adhesive strip should extend beyond the side end by a certain length, typically 5 millimeters, matching the height of the sideboard. At the midpoint of the sideboard, an insulating tape strip should be applied every 3 decimeters, with the length also consistent with the height of the sideboard.