London Electrical Inspection & Testing

Frequency of Inspections

The frequency of the periodic inspection and testing must be determined taking into account:

1. the type of installation
2. its use and operation
3. the frequency and quality of maintenance
4. the external influences to which it is subjected.

It is recommended that periodic inspection and testing is carried out at least every:

1. 10 years for a domestic installation
2. 5 years for a commercial installation
3. 1 year for swimming pools

Other instances when a periodic inspection should be carried out are:

1. When a property is being prepared to be let
2. Prior to selling a property or when buying a previously occupied property

Scope

The requirement of BS7671 IEE Wiring Regulations, for periodic Inspection and Testing is for INSPECTION comprising careful scrutiny of the installation without dismantling, or with partial dismantling as required, together with a sequence of tests (as detailed below) considered appropriate by the person carrying out the inspection and testing.