The mechanical and electrical facilities (distribution box, electric welding machine, etc.) on the construction site should be well protected against rain and grounding.
The mechanical and electrical facilities (distribution boxes, welding machines, etc.) at the construction site should do a good job of reliable rain prevention measures and grounding measures.
The mechanical and electrical facilities (distribution box, electric welding machine, etc.) on the construction site shall be provided with reliable rain proof measures and grounding measures.<br>