Electrical Regulations Bathroom Extractor Fans

Zone 2 zone 2 for a bathroom is the same height as zone 1 2 25m extended to 0 6m around the bath.

Electrical regulations bathroom extractor fans.

Extractor fans installed within zone 1 must be at least ipx4. Initially it was a compulsory requirement to have a local supplementary bonding but this requirement has been relaxed provided you have met the rest of the requirements. Electrical requirements a point to note is that for any bathroom extractor fan installation to be successful all the circuits in bathrooms and showers need to have rcds. When this section is adopted by a community it essentially says that for venting purposes bathrooms must have windows that open.

This is because new builds are built to be more airtight so natural ventilation is much lower the ventilation requirements for a bathroom are 15 litres per second 54m3 per hour you might be wondering what the last point means. Bathroom exhaust fan venting code summary section r303 3. Hot water central heating or underfloor heating is the safest way of keeping a bathroom. An extractor fan is essential and will help cut down steam in the bathroom.

Bathroom heating all electric heaters and water heaters in a bathroom must be fixed and permanently wired. They must comply with providing the following ventilation airflow rates for intermittent extract minimum rates. Extractor fans are located in the bathroom ensuite kitchen and utility room. For utmost safety the transformer or power supply pack should be installed outside the bathroom area.

Some communities may require a vent fan even if there is a window in the bathroom. Bathrooms must have windows. Extractor fans installed within zone 1 must be fitted with 12v selv motors with the selv transformers and isolators fitted outside of zone 0 1 2. The bathroom zones for extractor fans uk electrical regulations divide the bathroom into 4 zones.

Exhaust fan most communities require bathrooms to have either a window that can be opened or an electric vent fan that will exhaust moisture from the bathroom to the outdoors. In addition background ventilators trickle ventilators must comply with the total ventilator area mm depending upon the design air permeability. 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. Current building regulations require all kitchens and bathrooms to have adequate air extraction.

Applicable to both zone 1 or 2 a selv fans with a rating of ipx5 or above may also be installed in these areas. In this regard electrical extractor fans are a relatively cheap and easy to fit solution to quickly freshening a room without the potential for draughts. In new build bathrooms with a bath and shower mechanical ventilation is required in the form of an extractor fan.