When entering the elevator pit is required, firstly turn on the main switch IG in the control cabinet, and then switch the safety rod to the working position;

当要求进入电梯底坑的时候，必须首先打开控制柜中主开关IG，然后把安全杆转到工作位置；

youdao

Until they can develop a strong enough battery, a process he predicts will take three to five years, Formula E drivers will simply switch cars during pit stops so the depleted battery can be recharged.

FORBES: Could Formula Racing Really Go Electric? We're About To Find Out