They must have normal vision, and good color perception to distinguish between various colored wires. Finger and manual dexterity is needed for using hand and power tools. Many employers require applicants to pass a physical examination as a condition of employment. Electricians usually work with little or no supervision. Employers furnish heavy tools such as pipe threaders and conduit benders and most test meters and power tools.
Some municipalities require electricians to be licensed.
Working Conditions Electricians on new building construction often work outside in noisy surroundings. In old buildings, they may work in cramped, dirty, poorly ventilated spaces. They should have their own transportation. Construction electrical work is not as affected by seasonal conditions as other building activities. Maintenance Electricians usually work in completed structures, which may vary from clean, air-conditioned offices to noisy, dirty factory areas.