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NECA 331 Figures 1

Figure 3.1(c). Grounding of AC Power System

Figure 3.1(d). Service Equipment Grounding Connections

Figure 3.2. Ground Clamp on Water Pipe

Figure 3.3. Cable to Steel or Cast Iron Connections

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NECA 331 Figures 2

Figure 3.4(b). Rebar Embedded in Concrete

Figure 3.4(c).UFER Ground Detail

Figure 3.4(a). Foundation Rebar Ground Connection

Figure 3.4(e). Welded Connections for Direct Soil Burial

Figure 3.4(d). Copper Wire as Concrete-Encased Electrode

Figure 3.4(g). Jumper for Rebar Mat

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NECA 331 Figures 3

Figure 3.4(h). Bonding of Anchor Bolts to Rebar

Figure 3.5. Cable Connecting to Ground Ring

Figure 3.6. GroundRod with Wire Pigtail

Figure 3.6.1(g). Splice Methods for Ground Rods

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NECA 331 Figures 4

Figure 3.6.1(j). Screw/Welded Coupling for Ground Rod

Figure 3.6.2(a). ExothermicWelded Connections Madewith Single-Use Molds

Figure 3.6.2(b). ExothermicWelded Connections Madewith Multi-Use Molds

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NECA 331 Figures 5

Figure 3.7(a).Trench Installation with Ground Enhancement Material

Figure 3.7(b). Ground Rod Installation with Ground Enhancement Material

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NECA 331 Figures 6

Figure 3.7(c). Building Exterior Grounding Detail

Figure 3.7(d). Chemical Rod

Figure 4.1.1. Triad Ground Rod Details

Figure 4.1.2. Waterstop

Figure 4.1.3(a). Plastic Pipe for Inspection Well

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NECA 331 Figures 7

Figure 4.1.3(b). Clay Pipe for Inspection Well

Figure 4.1.3(d). Disconnect with Lugs

Figure 4.1.3(c). Commercial Box for Inspection Well

Figure 4.1.4. Prefabricated Wire Mesh

Figure 4.2(b). Flexible Jumper with Exothermic Welded

Connection

Figure 4.2(a). Grounding of Gates

Figure 4.2(c). ExothermicWelded Connection

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NECA 331 Figures 8

Figure 4.2(d). Bonding of Barbed Wire

Figure 4.3(a). Pull Box Cover Grounding

Figure 4.2(f). Typical Perimeter Fence Isolation Detail

Figure 4.3(e). Lighting Pole Grounding

Figure 4.3(g). Rail Siding Grounding

Figure 4.3(h). Water Pipe Bonding

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NECA 331 Figures 9

Figure 5.1.5(a). Building Steel Grounds

Figure 5.1.5(b). Grounding Bars Welded to Steel Column

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NECA 331 Figures 10

Figure 5.1.5(d). Bar Joist Bonding Detail

Figure 5.1.5(e). Structural Footer Bonding Detail

Figure 5.1.5(c). Expansion Joint Bonding Detail

Figure 5.1.5(f). Grounding System Routing

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NECA 331 Figures 11

Figure 5.1.5(g). Grounding Bar Placement

Figure 5.1.5(h.1). Flush Floor Grounding Plate

Figure 5.1.5(h.2). Equipment Grounding Plate at ConcreteColumn

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NECA 331 Figures 12

Figure 5.1.5(i). Prefabricated Grounding Plates

Figure 5.1.5(j).Grounding Plate on Stem Welded to Column

Figure 5.1.5(k). Light-Duty Grounding Provisions

Figure 5.1.5(l). Conductive Floor Ground Detail

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NECA 331 Figures 13

Figure 5.1.5(m). Bonding of Metal Doors and Frames

Figure 5.1.5(n). Cable Rack Grounding

Figure 5.2.2(a). Motor Grounding Detail

Figure 5.1.5(o). Metal Handrail Grounding

Figure 5.2.2(c). Removable Ground Detail

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NECA 331 Figures 14

Figure 5.2.2(d). Bonding Steel Cable Tray

Figure 5.2.3. Recommended Receptacle Mounting Positions

Figure 5.2.2(e). Bonding Aluminum Cable Tray

Figure 5.3(a). Floor-Mounted Ground Bus

Figure 5.3. Wall-Mounted Ground Bus

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NECA 331 Figures 15

Figure 5.3(b). Grounding Installed Around Doorways

Figure 5.3.(c) Grounding Bar Wall-Mounted

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NECA 331 Figures 16

Figure 6.2(k). Ground Connection Plate in SRG