Forum Catalogue Edition 9.3 jan 2024 - Flipbook - Page 429
BATHROOM ZONING
WHAT IS BATHROOM ZONING?
All bathroom lighting installations must comply to the guidelines set out in Amendment 1 of the 17th edition of the
IEE Wiring Regulations (BS7671). The bathroom is divided into zones, with prescribed minimum IP ratings for the light
fittings in each zone. To illustrate IP zoning regulations, the bathroom area is divided up into areas or ‘ZONES’. Light
fittings are then assigned an ‘IP rating’ which indicates how much protection they provide against ingress of water and
other particles. Each zone has a minimum IP requirement that must be met if a fitting is to be installed in this area.
Zone 0 ≥IPX7
Zone 1 ≥IPX5
Inside bath or shower. Only 12V AC rms
The area above the bath or shower up to a
or 30V ripple-free DC SELV fittings with a
height of 2.25 metres. Fittings must be rated at
minimum rating of IPX7 (protected against
IPX5 or higher (protected from jets of water).
immersion in water). Transformers must be
sited outside Zones 0,1,2.
Zone 2 ≥IPX4
Outside Zones 0, 1 & 2
Covers an area 0.6 metres wide immediately
Covers any area outside Zones 0, 1 and 2. There
next to, and all around Zone 1. The 60cm area
is no IP requirement in this zone. Bathrooms
around washbasins should also be treated as
are allowed to contain a socket outlet, this
zone 2. The minimum rating is IPX4. If there
must be located 3 metres outside Zone 1.
is a likelihood of water jets being used for
Lighting circuits and any socket-outlet circuit
cleaning purposes in Zone 2, a minimum of
in a room containing a bath and/or shower
IPX5 is required.
must be provided with 30mA RCD protection.
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