Are there any types of 6mm T&E that are more flexible than the standard type of T&E. I want to thread 5m of 6mm T&E back through trunking containing other cables.

Can you put a leader through the trunking, in anything suitable to get from A to B. Then pull the correct cable through after taping the two parts together?

Yes otherwise known as a fish tape or fish wire. One of my most used and "couldn't do without" tools.

But if this is "Trunking" you take the lid off. I think you mean "conduit"?

There are different types of cable that are more flexible, but I'm not aware of a more flexible than normal twin+earth cable.

What sort of "trunking" are we talking about? Can you explain the 5m run so we can understand the challenge? You'll get a better response about type of cable and how to pull it (rods, Cobra, etc.)

Depending on what the cable is for, what else is in the trunking/duct/conduit, the size of the duct, protection required, etc...

• 6491X conduit singles might work - ususally 7-cores but you can get even more flexible than that

• Tri-rated panel cables are quite flexible

• HO7RN-F Heavy Duty Rubber cable like the type used on quality extension leads might work

But I suspect the 6mm2 T+E could be pulled that distance with the right tools and preparation unless there are some major issues.

"Flexible" is only an advantage to go around a very tight bend. But it is harder to push a flexible cable through than a stiff one, so presumably if you are thinking of more flexible cables, you are also thinking of pulling them through so have some kind of fish wire etc already available?

2 hours ago, ProDave said:

Yes otherwise known as a fish tape or fish wire. One of my most used and "couldn't do without" tools.

But if this is "Trunking" you take the lid off. I think you mean "conduit"?

I've got some 4mm fibre glass rods which I was going to use for the fishing bit. It is 2 x 1 trunking, but the lid won't come off because it's covered with plasterboard. I was hoping to make life as easy as possible for myself because I've always found anything larger than 4mm a sod to pull through conduit. Life would have been easier if I had thought further ahead.

2 hours ago, garrymartin said:

There are different types of cable that are more flexible, but I'm not aware of a more flexible than normal twin+earth cable.

What sort of "trunking" are we talking about? Can you explain the 5m run so we can understand the challenge? You'll get a better response about type of cable and how to pull it (rods, Cobra, etc.)

Depending on what the cable is for, what else is in the trunking/duct/conduit, the size of the duct, protection required, etc...

• 6491X conduit singles might work - ususally 7-cores but you can get even more flexible than that

• Tri-rated panel cables are quite flexible

• HO7RN-F Heavy Duty Rubber cable like the type used on quality extension leads might work

But I suspect the 6mm2 T+E could be pulled that distance with the right tools and preparation unless there are some major issues.

I had HO7RN-F at the back of my mind, as I think I have used it in the past. The trunking is in the ceiling, but not accessible. One end is curved up into the loft and the other end is curved down into the room. I should have thought ahead a bit more and installed it with the other cables. It may not be required, but if it is, then doing it now will be easier. Is it acceptable to connect a home battery system using HO7RN-F cable.