A Guide To Bathroom Zone Regulations

Zone 0 And Zone 1 Regulations:

Zone 0 is inside the bath or shower itself. Any fitting used in this zone must be low voltage (Max 12 Volts) and be rated at least IP67 which is total immersion proof.

Zone 1 is the area above the bath to a height of 2.25 metres from the floor. In this zone a minimum rating of IP44 is required. If the fitting is 240 Volts, a 30 mA residual current device (RCD) must also be used to protect the circuit in this zone.

Zone 2 And Zone 3 Regulations:

Zone 2 is the area stretching 0.6 metres outside the perimeter of the bath and a height of 2.25 metres from the floor. In this zone an IP rating of at least IP44 is required. In addition, it is good practice to consider the area around the wash basin (within a 60cm radius of any tap) as Zone 2.

Zone 3 is anywhere outside zones 0,1 and 2 (subject to specific limits) and where no water jet is likely to be used. No IP rating is required in Zone 3. In addition to the above, if there is a likelihood of water jets being used for cleaning purpose in zones 1,2 or 3, a fitting rated a minimium of IP65 must be used.

Full details can be found in the latest copy of the IEE wiring regulations.

All of the above infomation is for guidance only.