Question 301Electricity/Electronics - QMED70% to pass
Before working on an electric cargo winch master switch or controller, what should be done?
AI Explanation
The correct answer is A) open the circuit breaker in the power supply and tag-out.
This is the correct answer because it is a critical safety procedure to de-energize the electrical system before working on any components. Opening the circuit breaker and tagging it out ensures that the system cannot be inadvertently energized while personnel are working on it, preventing the risk of electrical shock or other hazards.
The other options are incorrect because they do not properly address the safety concerns. Heating the switch box, spraying the gasket with solvent, or draining condensate would not de-energize the system, and could potentially introduce other safety issues.
Related Questions
#299 Which of the following represents the accepted method of cleaning dust and foreign particles from electrical equipment while limiting damage to electric components? #300 What damage may occur to the components of a winch master control switch, if the cover gasket becomes deteriorated? #302 In the illustration shown, what type of protection is provided to the potable pump drive motor? Illustration EL-0043 #303 Low horsepower, polyphase, induction motors can be started with full voltage by means of which kind of starter? #304 As shown in the illustration, which of the following conditions will occur as a result of a momentary loss of power? Illustration EL-0017