Do I need to use trunking ?

[MTBOO]

Hi
Having underfloor (laminate) heating mats installed those foil mat types . Doing some work in preparation for electrician to come in and wire it all up. installed patress box next to double socket ready for fused spur and one above it for the heating controller. Need to know if I need to install trunking to protect cable. Cables will be in safe zone but room is converted garage with plasterboard and pinkish type insulation behind it. I have put in white plastic round teunking for cable from top control box down to FCU but for small distance between FCU and floor, do I need any. Cable can just hang down to floor but not sure if I need anything. Bit fiddly to get something in in the lower part. Cable will be directly behind plasterboard up against the insulation but in safe zone

 

[Strima]

Speak to your electrician.

 

[Pete999]

Hi
Having underfloor (laminate) heating mats installed those foil mat types . Doing some work in preparation for electrician to come in and wire it all up. installed patress box next to double socket ready for fused spur and one above it for the heating controller. Need to know if I need to install trunking to protect cable. Cables will be in safe zone but room is converted garage with plasterboard and pinkish type insulation behind it. I have put in white plastic round teunking for cable from top control box down to FCU but for small distance between FCU and floor, do I need any. Cable can just hang down to floor but not sure if I need anything. Bit fiddly to get something in in the lower part. Cable will be directly behind plasterboard up against the insulation but in safe zone

Leave it to the Electrician to decide mate.

 

[Octopus]

got any photos ?

 

[westward10]

Some work in preparation, sounds like you are going the whole ten yards.

 

[Dillb]

got any photos ?

Wrong site for that sort of stuff Murdoch.

 

[MTBOO]

Not on me... will need to take some later!

 

[Octopus]

Wonder who is laying the floor and doing the connections - I fault found a really NASTY set up like this late last year - YUK - and the up front RCD made things 10 x worse...

 

[MTBOO]

Hope that side of it is ok. We just had a new consumer unit fitted as the old one wasn’t even RCD protected. Expensive job this underfloor heating

 

[Pete999]

Hope that side of it is ok. We just had a new consumer unit fitted as the old one wasn’t even RCD protected. Expensive job this underfloor heating

Hope the sparky isn't a rip off type, good luck with the install.

 

[MTBOO]

I guess this boils down to whether you can run electric cable through the pink fluffy stuff without shielding . So what do the regs say about it ??

 

[buzzlightyear]

got any photos ?

yeah I can see the op on the floor in foil naked like a chicken.

 

[Pete999]

I guess this boils down to whether you can run electric cable through the pink fluffy stuff without shielding . So what do the regs say about it ??

You can, but you will need to derate the cable when doing calculations

 

[MTBOO]

Nice!!
Google says if the cables are not more than 50mm in the wall they should be mechanically protected and/or backed up by RCD. Since the cable is just behind the plasterboard and curvy it is RCD protected at the CU and we are going off a fused spur I’m going to assume plastic trunking just behind the plasterboard will be ok.

 

[Octopus]

Expensive job this underfloor heating

Hum ......... shouldn't be too much unless you own a castle