Gasboy Atlas Fuel Systems Site Prep Manual - Manual (Page 16)

Site Preparation Electrical Requirements
Page 12 MDE-4333E Atlas Fuel Systems Site Preparation Manual · November 2011
Electrical Requirements
• DEF is non-flammable and creates no explosive vapors. Therefore, installation
requirements for DEF units differ from units that handle hazardous fuels. However,
electrical safety requirements are applicable. If a DEF unit is installed in the Class 1
Division 2 hazard zone of a pump/dispenser delivering flammable fluids, consult Gasboy
Technical Support to determine requirements for installing DEF units in that area.
Generally, the unit must be installed to comply with requirements for units handling
flammable fluids for the area within the hazard zone.
• Prepare sites according to NFPA 30A, NFPA 70, and applicable national, state, and local
codes/regulations.
• Use licensed electricians to make all electrical connections.
• Use a dedicated circuit/phase system. Wire all electronic units to the same power leg.
• Use an earth ground for circuits.
• Mount all circuit breaker panels and relay boxes securely to the wall.
• Use UL recognized/approved components and/or systems.
• Recommended voltages for pumping unit motors are 220VAC- single phase or
380VAC-3 phase.
• Route product wiring to protect from damage using conduit, as required.
Notes: 1) Pumping units require higher load levels than dispensers. For details, refer to
FE-356 Atlas Retail/Commercial Dispenser Field Wiring, FE-357 Atlas Pump
Retail/Commercial Field Wiring, and FE-361 Atlas Master & Satellite Field Wiring
Diagram.
2) Switched Neutral is not allowed in Canada.
Emergency Power Cutoff Switch
Spills and collisions expose highly flammable and explosive fuels. Failure to install and use
an Emergency Power Cutoff could result in severe injury or death. Observe all safety
precautions in this and other manuals.
WARNING
• NFPA 30A and Gasboy require that you install one or more emergency power
cutoff switches.
• An emergency power cutoff switch is a single control that removes AC power to all island
equipment (pumps/dispensers, STPs, canopies, lights, and so on).
Devices such as D-Boxes, Two-wire, and so on must be de-energized or have wiring
disconnected from the dispenser by the Emergency Stop or equivalent mechanism.
Third-party devices such as those supplying power to any form of communication to a
dispenser (intercoms, RS-485 communications, third-party controllers and such) must
also be de-energized or the wiring supplying that power be disconnected. Provision to
accommodate this must not introduce noise (RFI or electrical) into sensitive pump
dispenser electronic field wiring circuits during normal pump/dispenser operation.
De-energizing of the external equipment through the Emergency Stop or equivalent
device is recommended.
IMPORTANT INFORMATION