514 – Motor Fuel Dispensing Facilities

514.11(A) – Motor Fuel Dispensing Facilities

Change at a Glance:

The grounded conductor should be disconnected simultaneously with the all the other conductors when the emergency disconnect is activated. Revisions also make it clear that the equipment grounding conductors should not be disconnected by the emergency disconnect.

514.11 Circuit Disconnects. (Motor Fuel Dispensing Facilities)

(A) Emergency Electrical Disconnects. Fuel dispensing systems shall be provided with one or more clearly identified emergency shutoff devices or electrical disconnects. Such devices or disconnects shall be installed in approved locations but not less than 6 m (20 ft) or more than 30 m (100 ft) from the fuel dispensing devices that they serve. Emergency shutoff devices or electrical disconnects shall disconnect power to all dispensing devices; to all remote pumps serving the dispensing devices; to all associated power, control, and signal circuits; and to all other electrical equipment in the hazardous (classified) locations surrounding the fuel dispensing devices. When more than one emergency shutoff device or electrical disconnect is provided, all devices shall be interconnected. Resetting from an emergency shutoff condition shall require manual intervention and the manner of resetting shall be approved by the authority having jurisdiction. [30A:6.7]
The emergency shutoff device shall disconnect simultaneously from the source of supply, all conductors of the circuits, including the grounded conductor, if any. Equipment grounding conductors shall remain connected.
Exception: Intrinsically safe electrical equipment need not meet this requirement. [30A:6.7]