Bathroom Extractor Fan Wiring Regulations

Whether you have a large bathroom or a small one use the right size extractor fan for your bathroom based on the local building code.

Bathroom extractor fan wiring regulations. Extractor fans with an integral timer or timed switch need a 3 core and earth supply to allow the unit to run on after a light is switched off. A bathroom fan must carry at least 20 cubic feet per minute cfm all the time and 50 cfm intermittently according to the healthy house institute. All electrical works must be carried out by a fully qualified and registered professional electrician. This guide to bathroom zoning in accordance with iet wiring regulations 18th edition has been put together to provide guidance when installing an appliance such as an extractor fan in a location containing a bath or shower.

This is because many include a run on capability that is triggered by the operation of the light switch and it is not permitted to have a device powered from two separate circuits. This means that when installed and connected electrically the product should prevent. The bathroom zones for extractor fans uk electrical regulations divide the bathroom into 4 zones. These zones are determined by their proximity to water humidity and condensation and the likelihood of the electrical items installed in those areas getting wet.

According to the requirements for electrical installations iee wiring regulations 18th edition it is necessary to fit ventilation products that meet a minimum of ipx4 in zones 1 and 2 of a bathroom. Extractor fans in bathrooms are frequently powered from a lighting circuit. Iee regulations for bathrooms bathrooms are defined as areas of increased electrical hazard.