There are 3-bathroom zones that have been identified by the 18th edition IET wiring regulations and all applicable British standards : Zone 0 – Is defined as any area in a bathroom that can hold water. So, any area inside the bath, basin or shower tray.
Bathroom Zone 1
Zone 1 is the area above the bath or shower tray to a height of 2.25m from the floor. Any fitting used in this zone must have a minimum rating of IPx4* , which means it is protected against water spray from all directions.
Zone 0 is quite basically, anywhere inside a bath, basin or shower itself. It's defined as 'any area within a bathroom that can hold water'. Any fitting or appliance used within zone 0 must be a maximum of 12 volts (SELV) and fully protected against both partial and total immersion in water (minimum rating of IPX7).
The first digit indicates the level of protection from solids, so you can ignore the first digit when looking for bathroom lights. It is the second digit you want to pay attention to, as this indicates how water resistant the light is.
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.
Zone 1 is the area above the bath or shower to a height of 2.25m from the floor. In this zone, a minimum rating of IP45 is required but it is generally accepted that IP65 is to be used. It's also worth noting that most shower lights are rated at IP65 as standard.
Zone 0: Explosive atmosphere for more than 1000h/yr. Zone 1: Explosive atmosphere for more than 10, but less than 1000 h/yr. Zone 2: Explosive atmosphere for less than 10h/yr, but still sufficiently likely as to require controls over ignition sources.
Wet rooms must apply to Zone 0.
Shaver Sockets
In relation to bathroom zones, shaver socket regulations state that one must be placed at least 3m horizontally from the boundary of zone 1.
Zone 2 for a bathroom is the same height as zone 1 (2.25m) extended to 0.6m around the bath. The extent of the zones in a bath or shower room can be limited by floors, ceilings and walls. For more detailed information see BS 7671 diagrams 701.1 & 701.2.
to do a "number one": to pee, to urinate idiom. to do a "number two": to poop, to defecate idiom. "Number one" and "number two" are expressions often used by parents and children when talking about going to the bathroom.
I was wondering about the origin of using the terms "number one" and "number two" for going to the bathroom (for those unaware, number one is urinating, number two is defecating, at least in the US). I have used it several times myself without actually thinking about it and heard plenty of others use it as well.
Dividing panels, half-height walls, translucent enclosures, doors and even cabinet are some of the architectural and decorative options that are available for creating separate spaces in the bathroom, which is particularly useful if the room is shared.
Extractor fans installed within zone 1 must be at least IPX4. the SELV transformers and isolators fitted outside of zone 0, 1 & 2. Applies to the area beyond Zones 0 and 1, 0.6m horizontally and up to 2.25m vertically, including any recessed window with a sill next to the bath.
Light Functionality In The Bathroom
Whilst light switches are strictly not allowed in bathrooms, a pull cord can be used in any location in the bathroom.
The size of the room doesn't make a huge difference, nor does it matter where it's located in your house. This means you can convert a small bathroom into a wetroom. Rather than limit your conversion to the ground floor, you could install a wetroom upstairs.
As a 'wet room' is a free-standing space that does not have any unit attached to it, we refer to the projected line as Zone 0, rather than being linked to any sort of physical entity. This measurement starts from the ground level and is then 10 cm from this. Zone 1 is considered the length up to the 2.25 m upper level.
A switch should be at least 0.6 m from the edge of the bath or shower (outside the zones) and must be suitable for the location.
While zone 1 will keep you active, you'll receive more health benefits from zone 2, such as increased cardiorespiratory fitness, fat loss, and increased blood flow.
According to Luks, zone 2 training should make up about 80 percent of your overall cardio training, with around 20 percent reserved for sprints or higher-intensity workouts. “Elite athletes use polarized training (the 80/20 rule) to optimize aerobic and performance gains, and achieve optimal recovery,” says Luks.
The definition of Zone 2 is a hazardous area classified as an atmosphere where a mixture of air and flammable substances in the form of gas, vapour or mist is not likely to occur in normal operation, but if it does occur, will persist for a short period only.
When it comes to bathroom lighting, the requisite IP rating is determined by measuring its proximity to a water source or receptacle. Spaces directly above a shower or bath are considered “Zone 1” while those within 60cm of a water source are “Zone 2”; both require a rating of at least IPX4 (so IP44 is acceptable).
To eliminate shadows under the chin, eyes, and cheeks, fixtures should be mounted on either side of the vanity mirror (or on the mirror's surface, if it's large), 36 to 40 inches apart. The center of each fixture should be roughly at eye level, or about 66 inches above the floor.
Still wondering if you need special lights for bathrooms? Unless you're installing an LED shower light or wiring fixtures in close proximity to your shower, you can use dry-rated lights for most bathroom locations.