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Hello, with regard to underfloor heating mats, the new regs 753.411.3.2 state, "in the case of heating units delivered without exposed conductive parts, a suitable conductive covering, for example a grid with a spacing of not more than 30mm shall be provided on site as an exsposed-conductive-part above the floor heating elements ". the unit I use has an earthed screen around the cables. Whats the purpose of the above, it wont provide any mechanical protection ?. can someone enlighten me, Cheers Drayton.
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