WAJD Learning

Module 1 of 2 · 40 minutes

What you may legally do, and what must be certified

By the end of this module you will be able to

  • Explain Part P and identify notifiable work
  • Describe the three routes to compliance for notifiable work
  • Explain what BS 7671 is and what it is not
  • Recognise an installation that is unsafe rather than merely old

Work through it

1 interactive for this module, built on the WAJD Teach engine. Nothing moves until you ask it to, and every one has a written version if you would rather read it.

Amara Am I allowed to do electrical work in my own house?

Nadia Yes, which surprises people, and it is a heavily qualified yes. Part P of the Building Regulations covers fixed electrical installations in dwellings in England and Wales, and some work is notifiable.

Amara Meaning?

Nadia Meaning building control has to be involved. A new circuit is notifiable. A consumer unit replacement is notifiable. And work in a special location, which in practice means within the zones around a bath or a shower, is notifiable.

Amara And changing a socket?

Nadia Not notifiable, on an existing circuit outside a special location. But hear the distinction, because this is where people go wrong. Non notifiable does not mean unregulated. It still has to comply with the standard and it still has to be tested.

Amara So how do I lawfully do notifiable work?

Nadia Three routes. Use an electrician registered with a government authorised scheme, who self certifies and notifies for you. Notify building control yourself before you start, pay their fee and let them inspect. Or use a registered third party certifier, which is rare.

Amara And the fourth route, which is doing it and saying nothing?

Nadia Is not a route. And it catches people years later, not at the time. It shows up in a conveyancing search when you sell, it can hold up the sale, and it can invalidate your insurance if there is a fire.

Amara Which route is actually cheapest?

Nadia Almost always the registered electrician. People assume notifying building control themselves saves money and it very often costs more, because the fee is substantial and they may require third party testing anyway.

Amara Where does BS 7671 fit? People quote it like law.

Nadia It is not law. BS 7671, the IET Wiring Regulations, is the national standard. Complying with it is the accepted way of showing you have complied with the Electricity at Work Regulations and with Part P, which are the legal bits.

Amara Does that mean my old wiring is now illegal?

Nadia No, and this matters because people get frightened into unnecessary rewires. The standard changes, and an installation that complied when it was built does not become illegal when a new edition lands.

Amara Then how do I tell old from dangerous?

Nadia That distinction is the most useful thing in this module. Old but often fine: no RCD on every circuit, an older metal consumer unit, sound wiring in pre 2004 colours.

Amara And dangerous?

Nadia Rubber or lead sheathed cable, which is pre 1970 and perishes until the insulation literally crumbles off in your hand. No earthing to metal accessories. Scorching or arcing marks at the fuse board. Any sign of amateur additions in a bathroom.

Amara What about the smaller signs?

Nadia A socket that is warm to the touch. A burning smell you cannot place. Cracked accessories. Any of those, stop using that circuit and get somebody in. Warm sockets are loose connections, and loose connections are how electrical fires start.

Amara So what is the honest advice?

Nadia Learn this properly so you understand your own house, can judge a quote, and can spot something dangerous. Then use a registered electrician for anything notifiable. That is not me being cautious for the sake of it. It is cheaper, it is certified, and it does not surface when you try to sell.

The written material

Part P, in plain terms

Part P of the Building Regulations applies to fixed electrical installations in dwellings in England and Wales. Wales and England differ slightly in detail; Scotland and Northern Ireland have their own equivalent regimes.

Some domestic electrical work is notifiable, which means building control must be involved. Notifiable work includes a new circuit, a consumer unit replacement, and work in a special location such as within the zones around a bath or shower.

Everything else, such as replacing a socket or a light fitting on an existing circuit outside a special location, is non notifiable. That does not mean unregulated: all work must still comply with the standard.

  • Notifiable: a new circuit, a consumer unit change, work in a special location
  • Non notifiable: like for like replacement on an existing circuit outside special locations
  • Non notifiable does not mean unregulated, and it still must comply and be tested
  • Scotland and Northern Ireland operate separate but comparable regimes

Three lawful routes for notifiable work

Use a registered competent person. An electrician registered with a government authorised scheme self certifies the work and notifies building control on your behalf. This is the normal route and usually the cheapest.

Notify building control before you start. They inspect and charge a fee, which is frequently more than an electrician would have charged, and they may require a third party to test it.

Use a registered third party certifier. Less common.

What is not a route is doing it yourself and saying nothing. Unnotified notifiable work is a breach of the Building Regulations. It surfaces during a conveyancing search, it can hold up a sale, and it can invalidate insurance after a fire.

BS 7671 is a standard, not a law

BS 7671, the IET Wiring Regulations, currently the 18th Edition with amendments, is the national standard for electrical installation. It is not statute. Compliance with it is the accepted way of demonstrating compliance with the Electricity at Work Regulations 1989 and with Part P.

It changes. Recent editions substantially expanded RCD protection requirements, introduced arc fault detection devices in some circumstances, and changed consumer unit construction requirements to non combustible enclosures. An installation compliant when built does not become illegal when the standard changes, which is why an old installation is not automatically unsafe.

Old versus dangerous

Old and dangerous are different, and confusing them wastes money or costs lives depending on which way you get it wrong.

Old but often acceptable: a sound installation without RCD protection on every circuit, a metal clad consumer unit of an older type, or wiring in good condition without modern cable colours.

Genuinely dangerous and needing action: rubber or lead sheathed cable, which perishes and crumbles and dates from before about 1970. No earthing to metal accessories. A fuse board with signs of overheating, scorching or arcing. Any sign of DIY additions in a bathroom. Cracked accessories, burning smells, and sockets that are warm to the touch.

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