Figures for Review Earthing
Transcript of Figures for Review Earthing
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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