Cambs PAT Recomendations

The Health & Safety Executive offers no absolute rules on the frequency of the testing and inspection of portable appliances. The Memorandum of Guidance on the Electricity at Work Regulations suggests that 'regular inspection of equipment is an essential part of any preventative maintenance program', but no attempt is made to specify the intervals of time implied by the word 'regular'.

The lack of clear guidance is due to different situations requiring different measures in order to meet the requirement that the danger is prevented. The factors which affect the frequency of testing must be assessed in all cases. Cambs-PAT (UK) Ltd are able to help determine the frequency of test intervals by assessing:

Equipment installed in a benign environment will suffer less damage than equipment in an arduous environment.

If the users report damage as and when it becomes evident, hazards will be avoided. Conversely, if equipment is likely to receive unreported abuse, more frequent inspection and testing is required

Equipment construction:
The safety of a Class 1 appliance is dependent upon a connection with earth of the electrical installation. If the flexible cable is damaged the connection with earth can be lost. Safety of Class 2 equipment is not dependent upon the fixed electrical installation

Equipment type:
Appliances which are hand-held are more likely to be damaged than fixed appliances. If they are Class 1 the risk of danger is increased, as the safety is dependent upon the continuity of the protective conductor from the plug to the appliance.


Cambs-PAT (UK) Ltd, 5 Forge Close, Eaton Socon, St Neots, Cambridgeshire, PE19 8TP
Telephone : 01480 405 100 Fax : 01480 473 330 email :

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