底坑内应当设置2P+PE型电源插座的翻译：Pits should be set at the end of 2P+PE-type power outlet 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

The end of the pit should be set to 2p + pe of type power outlet

Pits should be set at the end of 2P+PE-type power outlet

In the foundation pit must establish the 2P+PE power source plug

The pit should be set 2 P + PE power outlet

Pits should be set at the end of 2P+PE-type power outlet