Consequently legislation under, The Electricity at Work Act (1989) requires all electrical installations to be maintained in a safe condition and therefore must be periodically inspected & tested to ensure safety. Electricity at Work Regulations 1989 places a legal responsibility on employers and employees, as duty holders, to endure that electrical systems used at work under their control are safe. To achieve compliance with the legal requirements of the Electricity at Work Regulations 1989 requires proof that an electrical system is safe, which involves amongst other things, proper inspection and testing of a system by competent people and the creation and maintenance of records.