Periodic Inspection & Testing FAQ

1. What is a periodic inspection?
A periodic inspection is a regular inspection on the condition of an existing electrical system. The periodic inspection aims to identify any faults or deficiencies within the system which pose either an immediate risk or one which could potentially develop. A periodic inspection involves both fixed wire testing and electrical testing of consumer units, fuse boxes, etc.

2. Why is a periodic inspection needed?
All electrical installations deteriorate over time and as such, they require regular inspection and testing to ensure it is safe for continued use.

3. How often is a periodic inspection needed?
The period between periodic inspections varies depending on the type of electrical installation and its setting. For example, a domestic installation should be tested every ten years, where as a commercial installation should be tested every five years. When you have an electrical installation undertaken, the testing electrician should be able to advise you as to when the next test is due.

4. Who should carry out a periodic inspection?
In order to ensure your electrical installation and all fixed wiring is safe for continued use, it is advisable to have a qualified testing electrician carry out the electrical testing. Make sure the electrician you employ is accredited by NAPIT, the National Association for Professional Inspectors & Testers or a similar organisation.

5. What happens during a periodic inspection?
The testing electrician will need to power down parts of your electrical installation in order to put test currents through the wiring. This will highlight any issues with earthing, resistance and any other issues which may be present. This type of testing is done in accordance to IEE Wiring Regulations, BS7671. The testing electrician will also check your fuse boxes, plug sockets, light switches, etc. In some older properties, the electrical cables may still be coated in rubber; which was phased out in the 1960's. These would need to be replaced with PVC insulated cable which has a much longer life span than those coated in rubber.

6. Will electrical testing cause disruption to the power?
Yes. However an experienced testing electrician will be able to minimise any disruption to either the power, or workflow.

7. What is an electrical inspection condition report?
Formerly known as a Periodic Inspection Report (PIR), an Electrical Inspection Condition Report (EICR) is the resulting paperwork which details the condition of your electrical installation, along with any immediate work which may be required.

8. How will I know when my next inspection and test is due?
Your testing electrician will be able to advise you when the next test is due. This should also be stated in any paperwork the testing electrician leaves you after conducting both electrical and fixed wire testing.