1. 配电盘：闪光灯 strobes | 配电盘 Switchboards | 电开关 Switches, electric
2. 电话接线：multiline phones 多线电话 | switchboards 电话接线 | scheduling 行程安排
3. 交换机：? Devices for isolation and switching ?装置和隔离开关 | ? Switchboards ?交换机The Progra | SELECTION AND INSTALLATION OF 选择与安装WIRING SYSTEMS布线系统
4. 配电板：Generator's Interlocking 发电机连锁 | SWITCHBOARDS配电板 | Main Switchboard主配电板