On 19/03/2019 15:40, Tricky Dicky wrote:
I am running 50mm X 50mm plastic trunking round the perimeter of garage at ceiling level and planning to drop conduit down to switches and sockets. How do I feed cables from the CU into the trunking and retain the fireproof integrity of the CU? Do I need to use glands or are there alternatives. I was thinking of using galvanised couplers and brass male bushes to attach to the CU and trunking and then filling the space with intumescent sealer once the cables are in situ. I will be using anti droop clips in the trunking.

https://www.screwfix.com/p/d-line-sa...ck-of-12/2286j

How far apart do they need to be and do I only need to use them just above doorways or the full extent of the trunking?

Nothing wrong with intumescent sealant where the cables enter the CU
(about £3.50 for a tube of Fire Mate at Toolstation.

As for the spacings of the clips. That's easy. Imaging the trunking just
instantly disappears and then just fit the clips where you need them to
keep all the cables roughly held up to the ceiling.


--
Adam