Wayne Reliance G6101D, Installation & Operation Manual

Page: 17 / 44

920943 Rev E July 2014 13
3.3.3 Circuit Breakers & Emergency Electrical Disconnect

The power to the dispenser should be on a separate dedicated breaker. Two (2) dispensers
may be grouped together on a common breaker if the submersible pump has its own
breaker. It is not recommended to group more than two (2) remote dispensers to the same
breaker, because you lose the ability to isolate the power to the dispenser in case of
problems.

If multiple remote dispensers provide power to the same submersible pump, then the
dispenser breakers must be on the same phase of power or damage to the equipment may
result.

Both legs of any AC circuit must be broken.

Install the correct breaker size based upon the model and/or voltage setting.

In addition to the circuit breaker requirements, in accordance with local, state, and federal
regulations, the fueling site should include a clearly identified emergency electrical
disconnect switch that simultaneously removes power to all of the electrical equipment
installed in the hazardous classified areas of the fuel site, including, but not limited to, the
fuel dispensers, submersible pumps, and fuel management systems. The switch should be
located within a convenient distance of the fueling equipment and all employees and fuel
site users should be trained on the location and function of the emergency switch.
3.3.4 Grounding

All dispensers and electrical connection boxes must be grounded per NFPA 70.

Connect a ground wire between the AC junction box ground lug and the main electrical
service panel.

Make sure a ground rod is properly installed and wired to the ground bus strip of the main
electrical service panel in accordance with the National Electrical Code. Unless prohibited by
local regulations, it is recommended that the neutral and ground bus strips be tied together.
3.3.5 Wiring

All wiring should be UL-Listed, gasoline- and oil-resistant wire.

All AC wire terminations must be made in the AC junction box. Take care when handling the
junction box cover. Keep the mating flange clean and free of burrs and scratches. Make sure
all wire connections are tightly spliced and secured with a wire nut. Use electrical tape to
close the open end of the wire nut. After completing the wiring terminations, securely fasten
the junction box cover using all of the supplied bolts.
3.3.5.1 Wire Size

For remote dispensers using a submersible starter relay, 12 AWG wire is recommended for
most applications for the control lines (pump feed, return, submersible drive). The wire
gauge for the submersible pump should be determined by the size of the motor and the
length of the run according to the manufacturer’s installation instructions.

The DC wire size for the optional pulser lines must be 18 AWG. Reference the installation
instructions of the fuel management system manufacturer regarding the ability to run the DC
wires with AC wires and the necessary wire specifications (shielding, etc.).