Home › Forums › Main Forum › Emergency lighting fixed wiring 3 or 5 years ? › Reply To: Emergency lighting fixed wiring 3 or 5 years ? at #3362264 Christian JonesParticipant The IET Guidance Note 3 Table 3.2 recommended initial frequencies of inspection of electrical installations – maximum period between inspection and testing. Special and specific installations – emergency lighting – routine daily/monthly and testing 3 years. I believe it may also mention fixed wiring testing in BS5266.