Employers should not allow work to be done on electrical circuits unless an effective lock-out/tag-out program is in place. No work should be done on energized electrical circuits. Circuits must be shut off, locked out, and tagged out. Even then, you must test the circuit before beginning work to confirm that it is de-energized ("dead").
Working on energized ("hot") circuits is one of the most dangerous things any worker could do. If someone turns on a circuit without warning, you can be shocked, burned, or electrocuted.
Do not do any tasks that you are not trained to do or that you do not feel comfortable doing! 2. When working on electrical circuits, even low-voltage circuits, the circuits must be _____.
Before ANY equipment inspections or repairs-even on so-called low-voltage circuits-the current must be turned off at the switch box, and the switch must be padlocked in the OFF position. At the same time, the equipment must be securely tagged to warn everyone that work is being performed.
Energized Electrical Work – Work on equipment that has not been de-energized. Exposed Fixed Circuit Part – Means that the bare conductor or other circuit part is stationary and will not move.
It's a written permit to work for an electrical worker to use when he or she is doing something that normally could be done on de-energized equipment. This can also act as a management tool to stop people from working energized when they don't need to be.
Steam, air, and hydraulic lines are de-energized by bleeding, draining, and cleaning out so that no pressure remains in lines or reservoir tanks. Mechanisms under load or pressure, such as springs, are de-energized by releasing and blocking them.
Article 130.2 of NFPA 70E requires equipment and machinery greater than 50 volts to be placed into an “electrically safe work condition” before maintenance or repair work begins. This means completely de-energizing equipment, conductors or circuits before an employee begins work.
These items include the equipment and circuits involved in a task, necessary safe work practices, mandatory PPE, the exposed energy sources, knowledge of and proper guarding/marking of the distance of the electrical boundaries (arc flash or shock boundaries), and a job briefing.
Testing for voltage, measuring current, or testing for absence of voltage is energized electrical work. Racking in or out power circuit breakers or installing temporary protective grounds is energized electrical work. Operating energized electrical equipment in a normal state is not energized electrical work.
Such protective measures, such as guarding, isolating or insulating, shall prevent the qualified person performing the work from contacting the lines with any part of their body or indirectly through conductive material, tools, or equipment.
Insulating material: When you are required to work with or near energized electrical equipment, place insulating material between you and energized components. For example, wear special rubber gloves designed to withstand high voltages. Protective sleeves and shoulder protection may also be used.
Definition of de-energize transitive verb. : to disconnect from a source of electricity : shut off the power to.
There are two categories of “working on”: Diagnostic (testing) is taking readings or measurements of electrical equipment with approved test equipment that does not require making any physical change to the equipment; repair is any physical alteration of electrical equipment (such as making or tightening connections, ...
The person is insulated from the energized part by using the proper gloves, with sleeves if necessary, rated for the voltage involved, or b.)...Overhead Lines.Voltage to GroundDistance50kV or below10 feetOver 50kV10 feet (plus 4 in. for each 10kV over 50kV)
Working near energized circuits. Working on live circuits means actually touching energized parts. Working near live circuits means working close enough to energized parts to put you at risk even though you may be working on de-energized parts.