Inspection and testing of portable and fixed electrical appliances is routinely carried out across UK workplaces. More properly, this type of electrical inspection is called in-service inspection and testing of electrical equipment, and the IET Code of Practice 4th Edition currently governs these inspection procedures, requiring in Regulation 4(2), that:
'as may be necessary to prevent danger, all systems shall be maintained to prevent, so far as is reasonably practicable, such danger'.
Regular inspection of equipment is an essential part of any preventative maintenance programme. The Electricity at Work Regulations recommends that maintenance, including test results, should be kept throughout the working life of the electrical equipment to enable the condition of the equipment to be monitored; and to empower the duty holder responsible for the inspection and testing regime to assess the future frequency required between formal visual inspections and any combined inspections and test.
All electrical equipment in an installation, whether permanently connected or connected by a plug and socket outlet should be inspected and tested in accordance with the recommendations contained in the Code of Practice for In-service Inspection and Testing of Electrical Equipment 4th Edition.