Quick answer
An EICR tests every circuit, but it doesn't always mean opening up every single socket. Industry guidance allows the inspector to inspect a sample of accessories, such as sockets, switches and light fittings, on each circuit, and to increase the sample if they find problems. The extent and any sampling must be agreed and recorded on the report.
What is always checked
- the consumer unit and every circuit breaker, fuse and RCD
- test results for every circuit: continuity, insulation resistance, polarity and earth fault loop impedance
- RCD operation
- earthing and main bonding to gas and water pipes
- a visual check of the sockets, switches and fittings in every room for damage, scorching or overheating
What sampling means
On a typical domestic circuit, the inspector removes and checks a proportion of the accessories, such as the socket faceplates and the connections behind them. Ring circuits are tested end to end, which shows up problems across the whole ring. If the sample turns up loose connections, heat damage or DIY work, the inspector increases the sample, up to every accessory on that circuit if needed. The amount of sampling is stated in the "extent and limitations" section of the report.
Why it matters which company you use
A report that tests only a handful of circuits, or samples so lightly that problems are missed, may not stand up if a council or insurer questions it. Our prices are fixed by the number of circuits precisely because we test every one. See EICR prices.
Can I ask for every socket to be checked?
Yes. If you want a 100% inspection of accessories, for example in an older property or after DIY work, tell us when you book and we will confirm whether it affects the price.