Normal Operating Condition of Electrical Equipment
Did you ever stop to think of the vast number of switches and circuit breakers found in the world? They are found in virtually every market and application around the globe. Operation of those circuit breakers and switches is a common task. It is probably very conservative to say that they are being operated tens of thousands of times each day. Even so, prior to moving the handle workers should always assess the risk and confirm that the equipment is in normal operating condition. Normal Operati ng Condition Clearly the likelihood of arc flash incident is high when employees are working on or near exposed live parts. Live parts are considered to be exposed when they are not suitably guarded, isolated, or insulated. Normal operation of enclosed equipment is not likely to result in an arc flash provided it is in a normal operating condition. So how do we define normal operating condition? A great start is found in the Standard for Electrical Sa...