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Hazard & Personal Protective Equipment

Safety becomes an important factor in the work environment in general and specifically the work of installation and maintenance of refrigeration equipment and air system. Safety in the workplace referred to in this session included two terms of safety personnel and safety apparatus. We know that the refrigeration equipment and procedures udaradapat operate fine when you get supply electrical energy ...

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Electrical Grounding

Electrical earthing wire (ground wire) used in electrical circuits to enable an electric current to flow back into the ground rather than flowing through the human body that has greater resistance dbandingkan with a grounding wire resistance. For example, if the conductor-voltage contact or stick to the framework of the HVAC units that are not equipped with grounding wire, and ...

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Beban Listrik

Beban listrik untuk keperluan lainnya antara lain heater atau elemen pemanas listrik. Pada peralatan refrigerasi dibedakan dua jenis heater, yaitu deforst heater dan mullion heater. Defrost heater diletakkan di evaporator, digunakan untuk mencairkan bunga es yang timbul di permukaan evaporator, sedang mullion heater diletakkan di sekeliling pintu refrigerator/freezer untuk mencegah agar rangka alat tidak berembun. Beban listrik lainnya adalah lampu ...

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Lightning Protection

Electrical circuit in an electrical power distribution structure is designed to operate at a certain current level as necessary. Every electrical circuit must be protected or gets protection, appropriate regulatory standards applicable locally, nationally, and internationally. Cable or conductor of each branch circuit protection must be to prevent the flow of current is greater than a predefined size. Electrical components ...

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Due to Shock Injury Electric Current

Often we think that the danger of electric shock can only be caused by a high voltage circuit. this is not true. Many cases of occupational accidents electric shock, which is fatal to until death caused by low voltage of 120 volts. If among us ever electric shock but safe did not have a bad result, the incident should not ...

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Voltage Step and Touch Voltage

During an interruption relation to the ground (ground fault), an electric current flowing through the grounding system to ground rod or other grounding system (the metal structure, grounding wire) and returned to the source of electrical power. The possibility of electric current flow can occur along the ground at a certain distance around the point where the ground gets reinforcement ...

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