While performing the duties of this job, the employee is occasionally required to stand, walk, sit, use hands to finger, handle, or feel objects, tools or controls, reach with hands and arms, climb stairs, balance, stoop, kneel, crouch or crawl, talk or hear. Plans and performs work requiring a thorough knowledge of electrical/electronic and mechanical theories and principles, writing specifications, local and national electrical codes, properties of various materials, and principles of operation and application of electronic equipment.