Currently, we feel that electric energy is common in the environment of our lives. Because plural, sometimes some of us forget or tidakmenyadari where electricity nearby. Only when there is a sudden blackout of PLN, they’ve realized how very important the existence of electrical energy in the vicinity. It is difficult to imagine, if the phase of modern life as we experience today without electricity.
Let us reflect for a moment, in any part of our lives, electricity plays an important role. Start of activities of life in their homes to other life activities, such as working in an office, shopping, recreation, and health maintenance activities of the body. Our house is filled with a variety of electrical appliances for personal purposes, such as toothbrushes, shavers, hair dryers, for culinary purposes, such as mixers, blenders, rice cookers, toasters, for the purpose of food preservation, such as refrigerators and freezers, and for the purposes residential comforts such as exhaust fans and room air conditioning.
Many orangbekerja location that uses a large-scale electrical equipment. Typically the equipment is operated with high voltage. Whatever he does, they are near the source of dangerous electrical voltage. The most important element to keep in mind when dealing with the electrical circuit is watched carefully. It is impossible for the technician / mechanic refrigeration and ventilation equipment can perform a proper tracking interference when the equipment does not get electric power supply.
So it should not be not, have to work using safe procedures when the equipment is still bertegangan.Meskipun many distractions tracking procedure can be performed when the mains power supply to the equipment disconnected, for example, checks the condition of electric motors, relays, contactors, transformers and other electrical equipment, but in others opportunity, tracking interference must be done when the equipment is connected to a voltage source, for example, check the incoming voltage to the equipment, check the voltage on a device or component, or check the voltage drop at the relay contact pair.
One thing that is most important, refrigeration and HVAC technicians need to learn how to work safely around the equipment while still receiving mains power supply. The professional technicians should not be afraid of electricity, but they should always be careful in work and should not be careless when you’re working on that still-voltage equipment. So the technician or mechanic refrigeration and HVAC must understand how to work safely without accidents.
Working with the safety is a necessity to prevent accidents, such as the danger of electric shock, fire, explosion, mechanical breakdown, and accidents in the workplace. Perhaps, the greatest danger is exposed to electric shock. Electric current flowing through the human body exceeds 10 miliamper within a few seconds can cause paralysis to the victim.
When the current flowing at 100 miliamper or greater within two seconds or more can be fatal. The higher the voltage, the greater the current that can flow through the human body. A shock hazard increases with increasing voltage. Personnel working in high voltage areas, should get a good job training and are equipped with safety equipment self-sufficient.
When our skin is sweaty or wet, then the body resistance to electrical currents to be down drastically. When that happens, hit by electric shock on the nominal voltage can be fatal. Therefore, the need to understand safety procedures, among others:
(1) Understanding the dangers and how to avoid electric shock
(2) Ensure there is a good electrical grounding system.
(3) To ensure the electrical safety system in good condition and properly
(4) Apply lockout procedures while working in the area of voltage.