Chapter 9, Table 5 — conductor dimensions

Correct: B — 500.8(C)(4)

Table 500.8(C)(4), Classification of Maximum Surface Temperature, is hosted at 500.8(C)(4), which governs equipment temperature marking and specifies use of the T-code table. 500.8(D)(1) addresses how Class I temperature is determined, not the T-code table itself, and 500.8(C)(3) covers material classification groups, not temperature.

Correct: B — 511.3(D)

511.3(D) hosts Table 511.3(D), which covers major repair garages where vehicles using lighter-than-air gaseous fuels like natural gas or hydrogen are repaired or stored. 511.3(C) instead governs heavier-than-air fuels such as LPG or Class I liquids, which don't apply to a natural-gas facility.

Correct: D — 511.3(C)

511.3(C) hosts Table 511.3(C), specifically addressing major and minor repair garages where vehicles using Class I liquids or heavier-than-air gaseous fuels such as LPG are repaired. 511.3(D) applies only to lighter-than-air fuels, which doesn't fit LPG.