The paper presents the causes of harmonics current and overload hazard of neutral line and phase line by harmonics in electrical line.

阐述了电气回路中谐波电流产生的原因及其引起中性线和相线过载的危险。

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To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical ground .

为了尽量减小点击的危险，仪器的底座和机柜必须连接到地线。

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It focuses on products that pose a fire, electrical, chemical, or mechanical hazard, or that can injure children.

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Childs said service orders on at least two occasions warned of the hazard in Maseth's quarters, and "two simple electrical 101s" should have been checked out by electricians.

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