Introduction to Electrical Inspection and Testing

The Periodic Inspection and Testing of an electricalinstallation can put added strain on an already
installation has been recognised as an essentialheavily loaded system thus leading to possible
part of ensuring compliance with the requirementsbreakdown, premature failure and in severe cases
of The Electricity At Work Regulations 1989.even fire.
As most electrical installations suffer damage andWith the introduction of the Electricity At Work
deterioration throughout their operational life anRegulations 1989 it has now become the legal
electrical inspection and test will be required toresponsibility of the owner (or the owners
confirm the safe operation of the installednominated person) of the electrical installation to
installation.prevent electrical accidents. The regulations call for
The decision for the inspection and test to takeall electrical systems and apparatus which are, or
place is usually instigated by a company assessingmay be, attached to the electrical installation, to
their Health and Safety policy. As it is abe maintained in a safe condition so that users
requirement of the Health and Safety At Workmay be protected from electrical shock or fire
Act 1974 that electrical systems installed in placeshazards.
of work comply with the requirements of TheRegulation 4 (2) of the Electricity At Work
Electricity At Work Regulations 1989, moreRegulations 1989 requires that all systems and
companies are introducing people and proceduresapparatus are maintained where this will prevent
to ensure that the company, where reasonablydanger. The prime method to accurately decide
practicable, introduce a Proactive Maintenancewhen maintenance is necessary to prevent
Programme and thus creates a safe workingdanger, is to perform regular inspections and
environment.tests; consequently it can be construed that there
Most electrical installations are designed andis a legal requirement to inspect and test. To
constructed to a very high standard. But once theensure the fixed wiring system is and continues
installation is in operation and under the control ofto function correctly and safely, it is essential that
the owner problems can occur due to thean inspection and test is completed.
following:a) on a change of ownership or tenancySome premises require electrical inspection and
of the premisesb) on a change of use of thetesting to take place on a regular basis and in
premisesc) after alterations or additions to thesome cases the electrical inspection and test is
original installationd) because of any significantmandatory. Mandatory inspection and testing is
change in the electrical loading of the installatione)usually a requirement of a local authority or forms
where there is reason to believe that damagepart of the conditions required to be fulfilled for
may have been caused to the installation.licensing purposes.
The extension and modification of an existing