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Can anyone exactly explain what is the difference between maintained & non maintained emergency lights in Central Battery System ?

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Question added by Nafseer Mohammed , Electrical Engineer , Kling Consult Saudi Arabia Engineering Consultancy
Date Posted: 2015/03/01
Hisham Sadeq
by Hisham Sadeq , BIM Manager , TXG - Technical Xperts Group

Maintained emergency lighting is required when a low level of light is required for safety reasons at all times the premises is in use. It remains on whether the normal lighting is on or off but Non-maintained emergency lighting is normally off when the normal lighting is on and only switches on if the normal lighting supply should fail like during a fire. (offices, shops factories, etc)

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