SC Refrigeration Practice Questions - South Carolina Refrigeration Contractor Examination Exam

Before opening an electrically driven condensing unit for mechanical work, OSHA-required practice is to:

Leave the disconnect on so gauges still have power Isolate energy sources and apply lockout/tagout so the equipment cannot be re-energized while you are working Tape a note on the thermostat only Pull the thermostat cover and rely on the occupant's promise not to touch it

Correct Answer:

Isolate energy sources and apply lockout/tagout so the equipment cannot be re-energized while you are working

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