Why do we need to post a safety warning sign on the power distribution box?

The reasons for posting safety warning signs on the distribution box are as follows:

To play a role in safety warning, because the distribution box belongs to the electrical equipment, in operation will be charged, in order to play a safety warning, to post safety warning signs on the distribution box.

National safety standards require that safety warning signs must be posted to ensure personal safety.

Distribution safety warning signs are as follows: