1.What equipment does a relay fuse primarily protect?
1.继电器熔断器主要保护哪类设备？
2.What type of plug is shown in the diagram?
2.图中所示为何种类型的插头？
3.Where is the use of insulating foam sealants not permitted?
3.在何处不允许使用绝缘泡沫密封剂?
4.What is the full-load amperage of a 208V, 50HP, 3-phase squirrel-cage motor?
4.一台 208V、50HP、三相鼠笼式电动机的满载电流是多少？
5.Which color marking is required on conductors or busbars that carry the higher voltage to ground in specific systems?
5.在特定电气系统中，对于那些对地电压较高的导体或母线，必须使用哪种颜色的标记？
6.What is the maximum allowed overload protection percentage for a motor?
6.电动机允许的最大过载保护百分比是多少？
7.Which location is least suitable for installing a subpanel?
7.下列哪个位置最不适合安装配电分箱（Subpanel）？
8.What does GFDI stand for?
8.GFDI 是什么缩写的全称？
9.Which conductor type is approved for photovoltaic systems exceeding 1,000 volts?
9.哪种类型的导体获准用于电压超过 1000 伏的光伏发电系统？
10.Where is the operating mode typically shown on a generator?
10.发电机的运行模式通常标注在何处？
