CSA C22 No.42图12插座孔电气连接测试针B|测试针|Figure12 Test pin B
标准：CSA C22 No.42-10 General use receptacles, attachment plugs, and similar wiring devices（或最新版）要求；
使用说明：Following the test in Clause 8.7.6, test pin B (see Figure12) shall be fully inserted to the ring stop and electrical continuity with the grounding terminal determined by an ohmmeter or a battery-operated light. The electrical continuity shall be maintained while moving the test pin B by hand, without exerting undue pressure, to reach the limits of pin movement in all directions and without loss of contact between the ring stop and the adapter, current tap, or cord connector, as applicable.
CSA C22 No.42量规汇总清单方便查询各量规: http://www.ag17.wang/product/CSA_C22.2_No.42_gauge_list.html