Screw cable clips

Since it's "cables" [plural] is there scope for clamping parallel cables with a single strip of metal or wood screwed at each end over a sandwich of rubber/foam? I think I've even seen products to so but I've failed to find one in a quick look.

Possibly... that kind of clamp exists. Not quite this, but similar for multiple thicker cables:

Theo

Fit 20mm oval or round conduit and screw the conduit clips at greater spacing, then stuff the cables through the conduit.

Unless you carrying heavy current through those cables there should not be a problem. There is table of derating I believe in the Part XVII etc stuff.

Unless you live in an ancient house with old oak roof timbers it should be possible to fit normal clips by tapping the initial fix then using a hardwood block between hammer and pin head, or even use a hammer head intended for driving polytop pins.

They do wall plugs for cable clips

Self-adhesive trunking?

Just use All-Rround band. Plastic coated and cut it to length.

I got some cable clips from somewhere which are like a strip of plastic doubled back on itself and a screw hole through both ends. I have tried searching for them and can't find them. If these will be of use let me know and I will do a more thorough search for you.

you mean like these?

That might look a bit of a bodge on the trusses, but it does have a certain merit when buried amongst the loft insulation (easier to fish out the cable, easier to trace, fewer fix points..). I might give that a go for some runs, thanks.

Theo

Does the glue hold up in the hot environment of a loft?

I've had double sided foam tape and 3M commando strips fail at the glue boundary in the recent 40C hot days. In both instances the the items being held in place were previously OK for over a year. Both were out of doors, protected from all but horizontal rain and in direct sunlight for around half the day.

I'd screw them in, and then use occasional metal cable clips to offer fire support (not strictly needed but no harm). A screw or nail every metre or so is much better than normal cable clip spacing to avoid sags. I wouldn't rely on glue, although trunking along floor joists wouldn't go anywhere if the glue did fail.

Theo

P clips.

Bill

yes, the clue was in the URL as q=P+cable+clips+and+screws&atb :-)

I didn't go on the URL; I used my encyclopaedic knowledge of cable fixing methods.

Bill

Yes exactly :)

Good old-fashioned buckle clips with a small round-head or panel-head screw through the hole?

Owain

Ahem, cable buried in the insulation?

What's the problem with my 1.5mm T&E under c. 500mm of insulation in the loft for lighting?

I've encountered banding. You know that plastic stuff with a metal clamp that goes around things. of course this was only on wood where you can get all the way around!

Brian