HOLT Electricians Practice Exam

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Resistance type heating elements in electric heating equipment shall be protected at not more than what amperage?

40 amperes
50 amperes
60 amperes
70 amperes

The correct answer is: 60 amperes

Resistance type heating elements are designed to convert electrical energy into heat energy through resistance. It is crucial to protect these elements to prevent overheating or damage due to overcurrent. The standard for protecting these heating elements generally involves ensuring that the maximum allowable current does not exceed a certain threshold. In this case, a maximum protection limit of 60 amperes is specified for resistance type heating elements in electric heating equipment. This limit is established to ensure the safe operation of the heating elements, taking into account the thermal characteristics and the heat generation capacity of the materials involved. Exceeding this amperage can lead to overheating, potential failure of the heating system, and even fire hazards. Maintaining the protection of resistance type heating elements at or below 60 amperes is critical for both operational safety and efficiency, as it helps to ensure that the equipment operates within its designed safe limits. This understanding is important for electricians and technicians, as it guides the selection of appropriate protective devices and contributes to overall safety in electrical installations involving heating elements.