1. Frequency of Tests

Frequency of Tests

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

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

The table below provides guidance on the recommended initial frequencies of inspections of electrical installations as well as routine checks.

Type of Installation Routine check Maximum period between
inspections and testing
as necessary
Reference
(see notes below)
General installation
Domestic N/A change of occupancy/10 years N/A
Domestic accommodation – rented houses and flats 1 year change of occupancy/5 years 1,2,10
Residential accommodation

(House of Multiple Occupation) – halls of residence, nurses accommodation, etc

1 year change of occupancy/5 years 1,2,10,11
Commercial 1 year change of occupancy/5 years 1,2
Educational establishments 6 months 5 years 1,2
Hospitals 1 year 5 years 1,2
Industrial 1 year 3 years 1,2
Residential accommodation at change of occupancy/ 1 5 years 1
Offices 1 year 5 years 1,2
Shops 1 year 5 years 1,2
Laboratories 1 year 5 years 1,2

 

Buildings open to the public
Hospitals and medical clinics – general areas 1 year 5 years 1,2
Hospitals and medical clinics – medical locations 6 months 1 year 9
Buildings open to the public
Cinemas 1 year 1-3 years 2,6,7
Church installations 1 year 5 years (quinquenially) 2
Leisure complexes 4 months 3 years 1,2,6
Places of public entertainment 1 year 5 years 1,2,6
Restaurants and hotels 1 year 5 years 1,2,6
Theatres 1 year 3 years 2,6,7
Public houses 1 year 5 years 1,2,6
Village halls/Community centres 1 year 5 years 1,2
External installations
Agricultural and horticultural 1 year 3 years 1,2
Caravan parks 6 months 1 year 1,2,6
Highway power supplies as convenient 6 years N/A
Marinas 4 months 1 year 1,2
Fish farms 4 months 1 year 1,2
Swimming pools 4 months 1 year N/A
Emergency lighting daily/monthly 3 years 2,3,4
Fire alarms daily/weekly/monthly 1 year 2,4,5
Laundrettes 1 month 1 year 1,2,6
Petrol filling stations 1 year 1 year 1,2,6
Construction site installations 3 months 3 months 1,2

 

Reference Key

  1. Particular attention must be taken to comply with S1 2002 No 2665. The Electricity Supply Regulations 1988.
  2. S1 1988 N0 635 The Electricity at Work Regulations.
  3. See BS5266: Part : 1988 Code of practice for the emergency lighting.
  4. Other intervals are recommended for testing operation of batteries and generators.
  5. See BS 5839: Part 1: 1988 Code of practice for system design installation and servicing.
  6. Local Authority Conditions of Licence.
  7. S1 1995 No 1129 (Clause 27) The Cinematography (Safety) Regulations

 

Source: IET Guidance Note 3 – Inspection & Testing

Many thanks for carrying out all of our portable appliance testing at such short notice, reliable as always. Richard Thomas, Company Director, ERFA

Call 01452 536315

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