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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Electrical installations of buildings Part 5:Selection and erection of electrical equipment Chapter 54:Earthing arrangements and protective conductors
WITHDRAWN published on 3.6.1997
Selected format:Electrical installations of buildings—Part 5-54:Selection and erection of electrical equipment-Earthing arrangements, protective conductors and protective bonding conductors
WITHDRAWN published on 14.5.2004
Selected format:Low-voltage electrical installations—Part 5-54: Selection and erection of electrical equipment—Earthing arrangements and protective conductors
WITHDRAWN published on 31.7.2017
Selected format:Electrical installations of buildings—Part 7-712:Requirements for special installations or locations—Solar photovoltaic (PV) power supply systems
WITHDRAWN published on 15.12.2008
Selected format:Low-voltage electrical installations—Part 5-56:Selection and erection of electrical equipment—Safety services
WITHDRAWN published on 31.7.2017
Selected format:Electrical installations of buildings Part 5:Selection and erection of electrical equipment Chapter 53:Switchgear and control gear
WITHDRAWN published on 26.12.1997
Selected format:Electrical installations of buildings—Part 4:Protection for safety—Chapter 43:Protection against over current
WITHDRAWN published on 3.1.2000
Selected format:Electrical installations of buildings—Part 5:Selection and erection of electric equipment—Chapter 52:Wiring systems
WITHDRAWN published on 3.1.2000
Selected format:Electrical installations of buildings Part 7:Requirements for special installations or locations Section 704:Construction and demolition site installations
WITHDRAWN published on 17.10.2000
Selected format:Low-voltage electrical installations—Part 7-704:Requirements for special installations or locations—Construction and demolition site installations
WITHDRAWN published on 21.4.2009
Selected format:Latest update: 2025-09-14 (Number of items: 2 232 183)
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