Electrical Installations in Bathrooms

We all take the bathroom for granted. Lets face it, we do. Of all the rooms in a house it is quite likely to be the least used and sometimes least appreciated. But we spend a lot of money redesigning and then ultimately refitting them.

One thing that is often overlooked on a refit is the electrics in a bathroom. A lot of people don’t realise that the electrical installation in a bathroom is subject to quite rigid and onerous regulations. And rightly so. The risk of electric shock in a bathroom is heightened due to the presence of water and damp conditions.

The wiring regulations even has a section dedicated to “Locations Containing a Bath or Shower”. This section has a whole host of information regarding what the electrician can install, where it can be installed and more importantly how it needs to be installed so that it is compliant with the wiring regulations. So, lets briefly look at some of the criteria!


The picture above shows the various areas of a bathroom split into zones. These zones are known as 0,1 and 2. Within the measured areas of these zones, the regulations must be adhered to in order to install the correct type of electrical equipment. This means that any electrical equipment must be suitable for use for the zone that it is to be installed into.


A new change was introduced into the last version of the regulations regarding Residual Current Devices in bathrooms. All electrical circuits including electric showers, lighting etc now require RCD protection.


This is a question that i am often asked, “Can i install a 230v mains voltage light in my bathroom?”. The simple answer is, yes – provided that the circuit is RCD protected and the light fitting  is suitable for use within a bathroom. If the light fitting is to be installed above a bath or shower then they must be IPX4 rated.

All of this is a bit daunting to the homeowner, and to be fair, why would you need to know about it all?

If you are thinking of carrying out your next bathroom refit, or indeed thinking of carrying out any form of electrical work in your existing bathroom, make sure that you use a Part P registered electrician to carry out the work. In many cases, the electrical work carried out in a bathroom may well be notifiable to the local authority building control office in order to comply with Part P requirements.

Glynn Garner Electrical Ltd are listed as a Part P registered competent person authorised to carry out all electrical work in a domestic property.  I am fully insured and registered as a full scope contractor with Napit. I also carry JIB Approved grade status.

So click on the REQUEST A QUOTE button today for a free no obligation estimate!