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My humble opinion on the mismatch of wires and cables

2013-09-22
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Abstract: At present, there are situations in low-voltage power distribution systems that do not meet the requirements of overcurrent protection in the current national standard (Low Voltage Power Distribution Design Specification (GB50054-95)). This paper discusses this issue and proposes that electrical technicians should follow the promulgation of standards in a timely manner, correctly understand the standards, and reasonably apply them in low-voltage power distribution systems. The current carrying capacity of wires and cables must be selectively matched with protective devices so that the lines are protected by protective devices. This is the current national standard (Low Voltage Power Distribution Design Specification (hereinafter referred to as the \"Low Voltage Standard\"), which stipulates overcurrent protection, that is, to match wires and cables with protective devices. This is a problem that every project will encounter. At present, many people have ignored this problem. According to different situations, there are roughly two types of mismatch between wires and cables and protective devices. The following analyzes them one by one.

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