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Guidance Notes Lighting in Bathrooms (UK) Bathroom Lighting Zone Regulations This note is designed to help you decide on the correct type and location of light fittings in a bathroom. There are specific regulations that must be adhered to when installing lighting in wet areas. Bathrooms are divided into zones, with different requirements in each zone. This document should be used in conjunction with BS7671 special locations Please see fig 1.1 and fig 2.1 for definitions IP rating Ingress Protection Ratings are used to identify fittings that are constructed to prevent specific objects or materials entering the electrical parts of a luminaire. Whilst this may be for many reasons, in bathrooms this is primarily concerned with safety issues resulting from water ingress. Each zone will require specific levels of ingress protection, dependent upon the likely risk of submersion, splashing or water vapour penetration. IP rating = (Ingress Protection rating) The higher the IP rating the more protected the light will be. The rating refers to the light fittings ability to prevent solids and/or fluids entering the fitting enclosure. An IP rating has 2 numbers after it for example IP 55 The first number relates to protection from ingress or impact from solid material entering the light fitting (Dust, tools, fingers). The second number relates to protection from fluids entering the light fitting (water). These ratings are determined by specific tests. Sometimes you will see IPx4 or IP4x. The (x) is used when the corresponding number is not required. For example: IP2x (the industry standard finger test) denotes that you cannot touch or gain access to live parts with your finger. Date: 28/10/2013 Author: Dave Grant Revision: VR.2.1 Fig (1.1) Protection Against Solid Objects & Dust First Description / Test Number 0 No Protection Protection against solid 1 objects over 50mm, e.g. accidental touch by hands. Protection against solid 2 objects over 12mm, e.g. fingers. Protection against solid 3 objects over 2.5mm (tools / wires). Protection against solid 4 objects over 1mm (tools / wires / small wires). Protection against dust 5 limited ingress (no harmful deposit). 6 Totally protected against dust. Protection Against Fluids Second Number 0 Description / Test No Protection 1 Protection against vertically falling drops of water. 2 Protection against direct sprays of water up to 15 degrees from the vertical. 3 Protection against sprays to 60 degrees from the vertical. 4 5 6 7 8 Protection against water sprayed from all directions limited ingress permitted. Protection against low pressure jets of water from all direction limited ingress permitted. Protection against strong jets of water, e.g. for use on ship decks - limited ingress permitted. Protection against the effects of immersion between 15cm and 1m. Protection against long periods of immersion under pressure. Every light fitting should have an IP rating. PhotonStar products typically have a minimum of IP20, with the rating labelled clearly on the data sheet and written in the product description text. Bathroom fittings must have a higher IP rating than lights you may use in your kitchen or sitting room. Once you have the correct IP rating for your location and light fitting it must now comply with the different zones in your bathroom area. A minimum rating or IPx5 are the areas of ZONES 1 and 2 (Protection against low pressure jets of water from all direction - limited ingress permitted) this is the most important factor when choosing a light for your bathroom. The guidelines for bathroom lights above should help you decide which zone and what the requirements are for the positioning of fittings with in the Document: Guidance notes Date: 28/10/2013 Author: Dave Grant Revision: VR.2.1 Fig (2.1) Zones 0 Minimum degree of protection IPX7 1 IPX4 (IPX5 if water jets) 2 IPX4 (IPX5 if water jets) Outside zones IPXXB or IP2X Current using equipment Only 12V AC rms or 30V ripple free DC SELV, the safety source installed outside the zones 25 V a.c rms or 60V ripple free d.c SELV or PELV, the safety source installed outside the zones. The following mains voltage fixed, permanently connected equipment allowed: whirlpool units, electric showers, shower pumps, ventilation equipment, towel rails, water heaters, luminaires. Fixed permanently connected equipment allowed, General rules apply. General rules apply Taken from on-site guide BS 7671:2008(2011) Document: Guidance notes Date: 28/10/2013 Author: Dave Grant Revision: VR.2.1 Switchgear and accessories None allowed Only 12 V a.c rms or 30 v ripple –free d.c SELV switches, the safety source installed outside the zones. Only switches and sockets of SELV circuits allowed, the source being outside the zones, and shaver supply units complying with BS EN 61558-2-5 if fixed where direct spray is unlikely Accessories, SELV socket-outlets and shaver supply units to BS EN 61558-2-5 allowed. Socketoutlets allowed 3m horizontally from the boundary zone 1 Bathroom Area. The lighting in a bathroom should be as bright and even as possible without any glare to the eye. Please refer to BS EN 60529 IP codes and note that this is only a guide and should be used in conjunction with BS7671 amendment 1, also a competent person should be tasked with the works as per EAWR 1989. Document: Guidance notes Date: 28/10/2013 Author: Dave Grant Revision: VR.2.1