The electrical safety climate in the united states was different 20 years ago. Many companies did not have well-developed electrical safety programs and written electrical work procedures. Electrical workers were not trained in arc-flash hazards and were not provided with arc-flash personal protective equipment (PPE). Unprotected workers were expected to perform work on and near energized circuits and equipment. Currently, most companies have established electrical safety programs and provide arc-flash training and PPE to their employees. Yet electrical injuries still occur. Electrical injuries can be attributed to 1) wellintended electrical safety programs falling short in their implementation and/or 2) workers failing to recognize the severe injury potential in a situation perceived as a low-level hazard. This article addresses some reasons why electrical safety programs fail to protect workers. It also discusses the potential arc-flash hazards associated with low-magnitude fault currents, which are illustrated through calculations.

中文翻译：

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电气安全与电气事故预防脱节

美国的电气安全环境与 20 年前不同。许多公司没有完善的电气安全计划和书面电气工作程序。电气工人没有接受过电弧闪光危险方面的培训，也没有提供电弧闪光个人防护设备 (PPE)。未受保护的工人应在带电电路和设备上及其附近工作。目前，大多数公司都制定了电气安全计划，并为其员工提供电弧闪光培训和个人防护装备。然而，电伤仍然时有发生。电伤可归因于 1) 良好的电气安全计划未能实施和/或 2) 工人未能认识到在被视为低级危险的情况下的严重伤害可能性。本文介绍了电气安全计划未能保护工人的一些原因。它还讨论了与低幅度故障电流相关的潜在电弧闪光危害，这些危害通过计算进行了说明。