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Grounding, Grounding -6 – Gasboy Atlas Fuel Systems Installation Manual User Manual

Page 68

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Reference Information

Wiring

Page 7-6 MDE-4331M Atlas® Fuel Systems Installation Manual · September 2014

Grounding

Following are the grounding requirements for the unit:

• NFPA 70 requires connecting the following to the system ground:

-

Consoles

-

Relay control boxes

-

Pumps and dispensers

-

Circuit breaker panel

-

STPs

-

Electronic leak detectors

• Gasboy requires connecting each pump/dispenser to an equipment-grounding conductor

(see

Figure 7-2

) located in the conduit, as per NFPA 70, Article 250. Following applies to

the ground conductor:
-

Use a wire that is not smaller than 12 AWG.

-

Use a wire with green or green and yellow striped insulation.

-

Connect to the green grounding screw in the J-box.

-

Ground the providing power under NFPA 70, Article 250.

-

Bond the neutral bus to an approved grounding electrode.

Figure 7-2: Grounding Plan

Main Circuit
Breaker Panel

Pump/dispenser
Circuit Breaker Panel

Gilbarco

Console

Isolated Ground
Power Outlet
(Hubbel IG5261)

Insulated
Grounding
Conductor

Pump/dispenser J-box

Conduit

Metal Conduit

Grounding
Electrode

= Ground
Bond

Notes:

Conduit

Rigid Metal
Conduit

Ground Surface

Rigid Metal
Conduit

Adapter

Refer to NEC
and/or local
codes for
appropriate
conduit
requirements.

Grounding Plan (Typical)

2 Feet

Ground Bus

Neutral Bus

Neutral Bus

Ground Bus

Ground Screw

12AWG Green Ground Wire

White Neutral Wire

Switched Neutral
Circuit Breaker