No, a standard residential submersible sump pump is not designed to run continuously for 24 hours straight. While a pump may cycle on and off frequently over a 24-hour period during severe flooding, running uninterrupted for an entire day will cause the motor to overheat severely, degrade internal windings, and suffer permanent thermal burnout. Continuous running indicates a stuck float switch or a failed check valve. Verification: Check if the pump is actively pumping water out or running dry on a stuck switch.
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