极性连续性测试
请教以下工厂检验中的一项“极性连续性测试”是什么意思，没有接触过。是不是测试确保插头宽插脚一定是接到电源线的零线，窄插脚一定要接到电源线的火线，确保过流保护装置是与火线相连的？
就这么简单？
Polarization Continuity Test
(a) Each flexible light provided with a 2-wire polarized attachment plug shall be tested for electrical continuity between the grounded (neutral) circuit supply conductor of the attachment plug (wider blade) and the load fitting, if employed. Electrical continuity shall also be verified between the ungrounded (hot) circuit supply conductor of the attachment plug (narrow blade) and the overcurrent-protective device.
(b) Any indicating device such as an ohmmeter, a battery-and-buzzer combination, or similar continuity testing device, shall be used to determine compliance with the continuity requirements in (a).
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