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What Are The Specific Requirements You Need If You’re Having Electrical Renovations Or Rewiring?


What Are The Specific Requirements You Need If You’re Having Electrical Renovations Or Rewiring?

Understanding the specific requirements needed when having an electrician carry out electrical renovations or rewiring done in your home can be difficult and confusing. Faulty electrics in your home can be a serious fire hazard or it can lead to injury, electrocution or death. In the UK, electrics falls under Part P of the building regulations and, while existing wiring installations are not covered under these regulations, any significant alterations or new additions to the wiring in your home are.

Understanding Rewiring

Unless the wiring in your home is the modern PVCu coated type, rewiring is more than likely necessary. Rewiring your home is a very large and complicated process which requires a skilled and licensed electrician to carry out. Most home rewiring projects are performed in two stages. The first stage is the installation of the cables and wiring, and the second stage includes the fitting of sockets, switches and lights and everything is made ‘live’.

Requirements You Need If You’re Having Renovations Or Rewiring

There are some specific requirements specified in the BS-7671 you will need to follow if you are having renovations or rewiring done to your home. These include:

  • All cables buried in walls to run either vertically or horizontally from sockets.
  • Any renovation work that creates an alteration requires rewiring a portion, and in some cases, all, of the property, including upgrading the consumer unit.
  • All new wiring will have to conform to Part P: Electrical Safety.
  • All existing wiring in a renovation project must be improved to ensure that it is able to carry the additional loads safely and it should be earthed to current requirements.

I.E.E. Wiring Regulations

     When rewiring areas such as bathrooms, there are mandatory requirements of the I.E.E. Wiring regulations (BS 7671: 2001 Section 601) that must be followed. These are important safety standards which are measured in separate zones. Each zone is based on the perceived degree of risk of electric shock. These zones include:

  • Zone 0: Inside the bath or shower. Any fittings used here must be SELV (max 12V) and be rated IPX7 (protected against immersion in water).
  • Zone 1: Above the bath or shower to a height of 2.25m. A minimum rating of IPX4 is required.
  • Zone 2: The area stretching to 0.6m outside the bath or shower and above the bath or shower if over 2.25m. An IP rating of at least IPX4 is required.
  • Zone 3: Anywhere outside zones 0, 1 and 2. Where water jets are not to be used for cleaning purposes, the general rules of BS7671 apply. For detailed information, refer to the I.E.E. Wiring regulations (BS 7671: 2001 Section 601).

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