If an electric heater is rated at 15,000 W, and the voltage used is 240 V, what size breaker in amps would be required?

A) 140 B) 62.5 C) 50 D) 75


B

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All of the following are common lockout/tagout safeguards, except _____.

a. lock and tag all electrical equipment b. never operate any device, valve, switch, or piece of equipment that has a lock or tag attached to it c. use only tags that have been approved for your job site d. tag motorized vehicles only when there will be multiple users

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Which of the following statements about zoned systems is correct?

A) One thermostat controls all the motorized valves in the system. B) Zoned systems are only used for commercial buildings. C) Water flow in zoned systems is controlled by a motorized valve. D) Individual zone temperature control is not available in zoned systems.

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If three 75 W lamps are connected in parallel across a 125 V source, IT equals ________

A) 180 mA B) 1.8 A C) 18 A D) 18 mA

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Jigs are fixed or moving devices that are used to hold the fixtures in place.

Answer the following statement true (T) or false (F)

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