What defines a no load test?

• A. A visual inspection only
• B. No load test equals full load test
• C. Test at 50% of WLL
• D. Operational test prior to other tests to determine if the system is capable of safely operating through each functional mode, check all switches and stops

Answer: (D)

A no-load test is an initial operational check done with no external load applied, to verify that the system can be commanded through all functional modes and that safety devices, interlocks, switches, and stops respond correctly. This step is done before applying any load to catch control or safety issues without risking movement or damage. The option describing this as an operational test performed before other tests to determine safe operation through each functional mode and to check all switches and stops matches this purpose precisely. The other ideas fall short because a no-load test is more than a visual inspection, it is not the same as a full-load test, and it is not about testing at a partial (e.g., 50%) load.