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An electrical code is a set of regulations for the design and installation of electrical wiring in a building. The intention of a code is to provide standards to ensure electrical wiring systems that are safe for people and property.
An insulation monitoring device monitors the ungrounded system between an active phase conductor and earth. It is intended to give an alert or disconnect the power supply when the resistance between the two conductors drops below a set value, usually 50 kΩ. The main advantage is that the ungrounded or floating system allows a continuous operation of important consumers such as medical, chemical, military, etc.
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In electrical power distribution, armoured cable usually means steel wire armoured cable (SWA) which is a hard-wearing power cable designed for the supply of mains electricity. It is one of a number of armoured electrical cables – which include 11 kV Cable and 33 kV Cable – and is found in underground systems, power networks and cable ducting.
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IEC 60204-1 / EN 60204 Safety of machinery – Electrical equipment of machines – Part 1: General requirements
References
- 1 2 3 4 5 6 7 IEC 61140:2016 Chapter 4.2
- ↑ IEC Standard Voltages, IEC 60038
- ↑ Requirements for Electrical Installations. IET Wiring Regulations , BS 7671, British Standards Institute (BSI), London, 2018+A1:2020
- ↑ "NFPA 79: Electrical Standard for Industrial Machinery". www.nfpa.org. Retrieved 2021-08-04.
- ↑ "NFPA 70E®: Standard for Electrical Safety in the Workplace®". www.nfpa.org. Retrieved 2021-08-04.
