shall be provided with a clearly identified and readily accessible switch or other acceptable means, located remote from the

dispensing devices, to disconnect simultaneously from the source of supply, all conductors of the circuits,including the grounded conductor, if any.
Single-pole breakers utilizing handle ties shall not be permitted.

(B) Attended Self-Service Motor Fuel Dispensing Fa- cilities. Emergency controls as specified in 514.11(A) shall be installed at a location acceptable to the authority having jurisdiction, but controls shall not be more than 30 m (100 ft) from dispensers. [30A:6.7.1]

(C) Unattended Self-Service Motor Fuel Dispensing

Facilities. Emergency controls as specified in

514.11(A) shall be installed at a location acceptable to
the authority having jurisdiction, but the control shall
be more than 6 m (20 ft) but less than 30 m (100 ft)
from the dispensers. Additional emergency controls
shall be installed on each group of dispensers or the
outdoor equipment used to control the dispensers.
Emergency controls shall shut off all power to all
dispensing equipment at the station. Controls shall be
manually reset only in a manner approved by the
authority having jurisdiction. [30A:6.7.2]
FPN: For additional information, see 6.7.1 and 6.7.2 of NFPA 30A-2008, Code for Motor Fuel Dispensing Facilities and Repair Garages.

514.13 Provisions for Maintenance and Service of Dispensing Equipment. Each dispensing device shall be provided with a means to remove all external voltage sources, including feedback, during periods of maintenance and service of the dispensing equipment. The location of this means shall be permitted to be other than inside or adjacent to the dispensing device. The means shall be capable of being locked in the open position.

514.16 Grounding and Bonding. All metal raceways, the metal armor or metallic sheath on cables, and all non-current-carrying metal parts of fixed portable electrical equipment, regardless of voltage, shall be grounded and bonded. Grounding and bonding in Class I locations shall comply with 501.30.