1.Which method is most suitable for joining two conduit sections?
1.连接两段导管的最佳方法是什么？
2.Minimum burial depth of PVC under a parking lot?
2.停车场下PVC管的最小埋深是多少？
3.NEMA-1 subpanel must be installed:
3.NEMA-1配电箱必须安装在：
4.When designing a PV system for a 12-volt battery bank, which module voltage is most appropriate?
4.设计用于12伏电池组的光伏系统时，哪种组件电压最合适？
5.Max voltage drop for service entrance?
5.服务入口的最大电压降是多少？
6.Common wire colors in 480V, 3-phase, 3-wire:
6.480V、三相、三线制电路中常见的电线颜色是：
7.When rocky soil prevents driving a ground rod vertically, what is an acceptable installation method?
7.当岩石土壤阻碍接地棒垂直打入时，哪种安装方法可接受？
8.Boom-angle indicator inspection frequency?
8.吊臂角度指示器的检查频率是多少？
9.Maximum extension ladder allowed on site?
9.现场允许使用的最大伸缩梯长度是多少？
10.Fire extinguisher maintenance/testing interval?
10.灭火器的维护/测试周期是？
