Laminated Foil Underfloor Heating

[specs]

Cheers Telectrix. Looking forward to a chat with there tech team....

Not sure if this helps or not. but its all I could find on the subject. I have never heard or seen the one you describe and would be interested to hear the outcome.

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Earthing Grid





You are here: Home » FAQs » Heat Mat Glossary » Earthing Grid
An earthing grid is a metallic structure that must be installed above an unsuitably earthed heating system when it is used in a wet area such as a bathroom. The earthing grid is connected to an RCD and this ensures that the system is switched off if there is damage to the floor.
In bathrooms it is a legal requirement to place earthing grids above many systems if including carbon films, some heating ribbons and any normal heating cables if they are not fully earth protected. Earthing grids add to the cost and time of an installation and it is always preferable to use a system with a fully integrated earth rather than having to install a separate earthing grid.

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[shazbutz]

The more I read the more that it is as simple as 753.411.3.2. Good job the floor is far from fully down and is floating. The natural progression on this question now - where do I get the 30mm grid. Just searched CEF and local independent wholesaler with no joy.

 

[specs]

So what did the tech dept say. they must have answered the phone by now

 

[specs]

I am interested in this as I have never come across a system without an earth, and I find it hard to believe that anyone would choose a system that would require an earth grid purely on cost grounds.

 

[shazbutz]

It's a long story! The Swedish manufacturers, despite multiple emails from me requesting an answer from their technical and design team failed to respond at all. The UK team's answer was pretty much no earthing arrangements as long as not in a wet room and must be protected by a 30mA RCD. When I pushed the requirements stated in BS7671, the response was pretty much; " yeah we have had a few enquiries about that but an earthing grid is not required."
The system was not selected on cost but the most appropriate for the construction of the kitchen floor and layout. The grid went in but played hell with the previously established levels so there was much huffing and puffing from the builder. I remain surprised that there is no reference to earthing in promotional clips, installation instructions or in quite a long YouTube video of an installation. Lesson learned!

 

[specs]

thanks for getting back, it's good to know the result of your endeavours if only to warn others about the product and the lack of backup from the manufactures .I for one now know to steer clear .