When turning off the electrical power at a disconnect panel to work on an electrical circuit, what should you do to ensure that no one will turn the power on until you have finished and are ready?
What will be an ideal response?
Lock the panel with a lock that has one key and keep this key on your person.
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Which of the following is the primary cause of corrosion in ferrous piping systems?
A) Alkalinity. B) Oxygen. C) Calcium salts.
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What is the difference between suckers and water sprouts?
What will be an ideal response?
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A defective blower motor draws more current than a good motor because ________
A) The speed of the motor increases B) The CEMF decreases C) The airflow slows down, which decreases the cooling of the motor D) Both A and C
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What is the e-e of pipe L?
Fill in the blank(s) with the appropriate word(s).
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