All electrical installations require periodic testing and inspection to ensure they are safe for continued use. The fixed installation will comprise the incoming supply cables, switchgear, distribution boards, fixed cabling of the installation and the socket outlets, fused connection units, lighting connections etc. This is a separate issue than the testing of portable electrical equipment. Fixed electrical equipment will also need inspection and testing and it should be ensured that relevant tests and inspections are undertaken, either at the same time as the fixed electrical inspection or as part of other planned maintenance and inspection.