Supervision Scope of a Second-Class Chief Electrical Engineer

A second-class chief electrical engineer may supervise the construction, maintenance, and operation of business-use electrical installations below a specified voltage.

Work and voltage limit

A second-class chief electrical engineer may supervise the construction, maintenance, and operation of business-use electrical installations with a voltage of less than 170,000 volts.

Official sources

The following official Tokyo Denki University materials were used to prepare this page.

2025 Student Handbook — School of Engineering (2025 academic year) — PDF page 147
2026 Student Handbook — School of Engineering II (2026 academic year) — PDF page 109