Is it a formal job for power supply bureau to climb telephone poles?

No, it's a contract worker, also called an electric migrant worker.

The difference between the two is that regular workers usually enter through campus recruitment channels, and employees who pass the unified and written examinations and sign labor contracts with power grid companies. Can enjoy all the benefits of the company.

Agricultural electrician refers to an electrician formally employed in the form of a contract. The vast majority of employers are rural power service companies with assets contact with power supply enterprises. Generally, all provinces and cities recruit by themselves, which is different from the unified examination of school recruitment.