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Frequency of Periodic Inspection

Legislation requires fixed wiring testing be carried out every one to five years in most workplaces. In compliance with the Electricity at Work Regulations of 1989, all work activities and rented accommodation must take precautions to avoid the risk of death or personal injury. Electrical Wiring Regulations also suggest time intervals for various electrical installations and these are listed at the foot of this page.

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It is important to appreciate that the regular inspection and testing of all electrical installations is a requirement of the Electricity at Work Regulations. The time interval concerned will, of course, depend on the type of installation and on the way in which it is used. The table below shows the suggested intervals between periodic tests and inspections.

 

Suggested intervals between
periodic tests and inspections

Type of installation

Maximum period between inspections

Domestic premises

10 years

Commercial premises

5 years

Educational establishments

5 years

Hospitals

5 years

Industrial premises

3 years

Cinemas

1 year*

Churches

5 years

Leisure complexes

1 year

Places of public entertainment

1 year

Theatres, etc.

1 year*

Agricultural and horticultural

3 years

Caravans

3 years

Caravan sites

1 year*

Emergency lighting

3 years

Fire alarm systems

1 year

Launderettes

1 year*

Petrol filling stations

1 year*

Public Houses

5 years

Marinas

1 Year

Highway power supplies

6 years

Temporary installation

3 months

Where maximum periods are marked * 
there is a legal requirement for retests at these intervals