According to NFPA 58, Liquefied Petroleum Gas Code, the emergency power shut-off system for an LP-Gas dispensing station must include a clearly identified and accessible switch or circuit breaker. This control must be located at a distance not less than 20 ft (6.1 m) and not more than 100 ft (30 m) from the dispensing device(s). This specified range ensures the shut-off is far enough from a potential immediate hazard at the dispenser to be safely accessed, yet close enough to be operated quickly in an emergency.

B. 150 ft (45.7 m): This distance exceeds the maximum allowable distance of 100 ft, making it non-compliant with the code.

C. 200 ft (60.9 m): This distance is double the maximum permitted by the standard, which could dangerously delay an emergency shutdown.

D. 250 ft (76.2 m): This distance is significantly greater than the code-mandated maximum, rendering it an unsafe and non-compliant installation.

1. NFPA 58, Liquefied Petroleum Gas Code, 2020 Edition, Section 6.26.5.1(D). This section states, "A clearly identified and accessible switch(es) or circuit breaker(s) shall be provided at a location not less than 20 ft (6.1 m) nor more than 100 ft (30 m) from the dispensing device(s) to shut off the power in the event of a fire, accident, or other emergency."