As previously pointed out, the employer has a duty to maintain his electrical System so as to prevent danger but the regulation does not outline the method by which this can be achieved.   Although safety testing was not detailed specifically, the implication is that the only means of accurately determining when the maintenance the system is required is to perform regular inspection and testing of the system. No electrical installation, no matter how carefully designed and erected, can be expected to last forever. Deterioration will take place due to normal wear and tear. With this in mind the ETCI recommend that installations be inspected periodically. The time interval between inspections will depend on the type of installation and on the way in which it is used. Below is a list of suggested testing intervals.

SUGGESTED INTERVALS BETWEEN

PERIODIC TESTS AND INSPECTIONS

TYPE OF INSTALLATION   MAX. PERIOD BETWEEN INSPECTIONS

Domestic  Premises                                 

Commercial Premises                         

Educational Establishments           

Hospitals                                             

Industrial Premises                               

Cinemas                                         

Places of Public Entertainment         

Agricultural and Horticultural       

Caravans                                             

Caravan Sites                               

Emergency Lighting                   

Fire Alarm Systems                     

Launderettes                                     

Petrol Filling Stations                   

Highway Power Supplies               

Temporary Installations                   

10 Years

5 Years

5 Years

5 Years

3 Years

1 Year

1 Year

3 Years

3 Years

1 Year

3 Years

1 Year

1 Year

1 Year

6 Years

3 Months