The guardrail outside the window can store electricity

11 of the New York City Mechanical Code (MC) require guard railings (‘guards’) to be provided where components of a mechanical system, mechanical equipment and mechanical devices requiring service are located. When guardrail systems are used at hoisting areas, a chain, gate or removable guardrail section shall be placed across the access opening between guardrail sections when hoisting operations are not taking place. To clarify the use of guards and personal fall arrest systems to facilitate solar panel maintenance. An important exception exists when working above dangerous equipment, such as chemical vats or electrical machinery, where protection is required regardless of height, since these hazards can cause serious injury upon contact. Additionally, stairways with 4 or more steps must have a stair rail system with a handrail.