Outdoor lighting lamps and lanterns must set an RCD protection?

【 Students question] Outdoor lighting lamps and lanterns must set an RCD protection?

　　【 Answer 】 ( 1) For city road lighting lamps and lanterns, shall implement the 'city road lighting design standard' CJJ45 - 2006. If they set the RCD, power distribution system must be taken into account comprehensively, and the short circuit grounding resistance and sensitivity, and many other factors to determine.

　　( 2) Landscape lighting, building an executable specification for design of civil construction electrical JGJ16 - 2008. 10. 9. 3. Article 4, namely '( Architectural landscape lighting) Branch circuit shall be installed outdoor 'residual current protective device.

RCD easy mistrip and its solution, two class

( 1) Normal lighting circuit leakage current is too large. At this time can use double insulation cable, choose the product with high protection grade or shorten the length of the line, reducing the amount of lamps installed in the loop, etc.

　　( 2) Leakage current rating RCD itself is wrong choice. RCD if used as a direct contact with the additional protection of or indirect contact with protection, residual current action should not be more than 30 ma; RCD if used only as a improve circuit short circuit sensitivity, RCD rating can choose more than 30 ma.

the above content are according to the students the problems in the practical work of finishing, for your reference, if there is any question, please timely communication, correct.

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