Electrical Design Specifications

You need to write down the standard name and number; otherwise, how can it be made clear? Maybe some can be used, while others cannot. For example, the Code for Building Design GB50016 is applicable to industrial and civil buildings

JGJT16-2018 specifies that the emergency lighting used for fire fighting operations in civil building electrical design must have a duration of no less than 180 minutes; however, no corresponding requirement can be found in GB51309-2018, which is why this issue arises

Ahaha, this sea friend still needs to look at the fire safety design specifications! Regarding the requirement of 3 hours (180 minutes), please refer to clause 6.3.7.5 of GB17945-2010 Fire Emergency Lighting and Evacuation Signaling Systems; the backup power supply should be able to ensure the proper operation of the emergency lighting controller for at least 3 hours ； Clause 9.1.2 of the \"GB50160-2008 (2018 edition) Code for Fire Protection Design of Petrochemical Enterprises\":......Batteries can be used as a backup power source for lighting, and the continuous power supply time shall not be less than 3 hours. Furthermore, if they are requirements set by civil building design codes (the most basic codes), then generally speaking they represent the minimum requirements (for the petrochemical industry), and compliance with them is essentially mandatory!

This sea friend has some explanations regarding clause 3.4.7 of the \"GB 51309-2018 Technical Standards for Fire Emergency Lighting and Evacuation Signaling Systems\"! Clause 3.4.7 requires that the main power supply for the emergency lighting controller shall be supplied by the fire protection power supply ； The built-in battery power of the controller should enable it to operate for at least 3 hours after the main power supply is interrupted.

This is a non-centralized control type; there is no controller