Suggested intervals between periodic tests and inspections of electrical installations in domestic and commercial premises is detailed below.

The maximum interval between inspections for the electrical installation of a Domestic premises is 10years, Commercial premises 5years, Educational establishments 5years.

Other types of premises – Hospitals is 5years, Industrial premises 3years, Cinemas 1year,   Places of Public Entertainment  1year,  Agricultural and Horticultural 3years.

Caravans require inspections every 3years and Caravan Sites 1year.

Emergency lighting, certain tests are required every 3 months and Fire Alarm Systems 1year.

Temporary Installations require to be tested every 3months.