Risk Class 3 covers people who are involved in hazardous professions like people who work in mines, people involved in the installation of high tension wires etc.. (policybazaar.com)
People engaged in risky professions like working in mines, installing high tension wires etc. are covered in Class 3. (coverfox.com)
But high - tension wires take a toll, even on a clear day. (si.com)