A periodic Inspection is a test and inspection to ascertain the condition of an existing electrical installations, to identify any deficiencies against HRN EN 60364 which is the Croatian standards for electrical installations.

All non-domestic electrical installations should be subject to a regular programme of testing and inspection to comply with current legislation. You must ensure that all necessary precautions are being taken to reduce the risk of injury or death through electrical failure.

There are many good reasons for adopting periodic testing. You may need to inspect and test to comply with the HRN EN 60364. Or if you have recently acquired ownership or tenancy of business / workplace premises you may wish to ensure the installation is safe. If you suspect there is a fault or risk of failure, you must take steps to inspect the affected circuits urgently.

The Inspection and Test Service
Following a visual appraisal and verification of the entire electrical installation, the following test procedures are applied where appropriate, in order to ascertain the safety of electrical installation :

• Continuity – to ascertain that the earthing is continuous throughout the circuit.
• Bonding Conductors Continuity – to ensure bonding is in place and effective.
• Ring Circuit Continuity – ascertains whether or not the ring is complete.
• Insulation Resistance – to test whether there has been any breakdown in insulation to the installation.
• Polarity – to check that the installation is correctly wired.
• Earth Fault Loop Impedance – to ascertain the Zs of the installation.
• Earth Electrode Resistance – applies to TT systems only, to test the earthing rods.
• RCD testing – to check that Residual Current Device disconnects the supply in the event of a fault.
• Functional testing of isolators and breakers – to ensure that they disconnect the supply.

Upon completion of the electrical testing, a detailed Periodic Inspection Report is supplied containing the following certification:

• Guidance Notes for recipients.
• Schedule of Inspection and Schedule of Test Results.

The engineer who carried out your testing will also talk through the results with you and explain if any remedial work is necessary in order to remedy an unsafe installation. If the electrical installation has any faults, they will be listed under the section of observations and recommendations.