____________________contactors are sometime used in duct heaters for silent operation.
Correct Answer:
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Q4: The fan control for a duct heater
Q5: How can the technician measure the amperage
Q6: What is the purpose of a sail
Q7: _ heaters are room heaters that plug
Q8: The size of the conductor is chosen
Q10: Where is the boiler thermostat typically mounted
Q11: The circuit is protected by a fuse
Q12: The _ usually has a line-voltage thermostat
Q13: Safety control for the overtemperature protecton are
Q14: There are two types of wiring diagrams
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