Electricians tricks and tips, it's useful

How to die.....

the exposed copper contacts are the part that gets me every time. one wrong move and youre learning a lesson the hard way.

确实有用，但电工内容最怕“看懂了就敢上手”。若不标明电压场景、断电验电步骤和适用边界，技巧越简洁，误用风险反而越高。