Grounding Installation Details

January 2002

Process Industry PracticesElectrical

PIP ELIGD000Grounding Installation Details

PURPOSE AND USE OF PROCESS INDUSTRY PRACTICES

In an effort to minimize the cost of process industry facilities, this Practice hasbeen prepared from the technical requirements in the existing standards of majorindustrial users, contractors, or standards organizations. By harmonizing thesetechnical requirements into a single set of Practices, administrative, application, andengineering costs to both the purchaser and the manufacturer should be reduced. Whilethis Practice is expected to incorporate the majority of requirements of most users,individual applications may involve requirements that will be appended to and takeprecedence over this Practice. Determinations concerning fitness for purpose andparticular matters or application of the Practice to particular project or engineeringsituations should not be made solely on information contained in these materials. Theuse of trade names from time to time should not be viewed as an expression ofpreference but rather recognized as normal usage in the trade. Other brands having thesame specifications are equally correct and may be substituted for those named. AllPractices or guidelines are intended to be consistent with applicable laws andregulations including OSHA requirements. To the extent these Practices or guidelinesshould conflict with OSHA or other applicable laws or regulations, such laws orregulations must be followed. Consult an appropriate professional before applying oracting on any material contained in or suggested by the Practice.

This Practice is subject to revision at any time by the responsible Function Team andwill be reviewed every 5 years. This Practice will be revised, reaffirmed, or withdrawn.Information on whether this Practice has been revised may be found at www.pip.org.

© Process Industry Practices (PIP), Construction Industry Institute, TheUniversity of Texas at Austin, 3925 West Braker Lane (R4500), Austin,Texas 78759. PIP member companies and subscribers may copy this Practicefor their internal use. Changes, overlays, addenda, or modifications of anykind are not permitted within any PIP Practice without the express writtenauthorization of PIP.

PIP will not consider requests for interpretations (inquiries) for this Practice.

Not printed with State funds

January 2002

Process Industry Practices Page 1 of 6

Process Industry PracticesElectrical

PIP ELIGD000Grounding Installation Details

Table of Contents

1. Introduction..................................51.1 Purpose ............................................. 51.2 Scope................................................. 5

2. References ...................................52.1 Industry Codes and Standards .......... 5

3. General Information.....................53.1 Category Index................................... 53.2 User Guidance................................... 6

List of DetailsELIGD082 – Building Column - Bolted

Compression Connection to ColumnWeb

ELIGD083 – Building Column - BoltedCompression Connection to ColumnFlange

ELIGD084 – Building Column-Welded Taband Bolted Compression Connection

ELIGD086 – Grounding Pad Set inConcrete

ELIGD101 – Structural Column - CrimpedConnection #2 AWG GroundConnection with Protective Sleeve

ELIGD102 – Structural Column - CrimpedConnection #2 AWG GroundConnection without Protective Sleeve

ELIGD103 – Structural Column - CrimpedConnection #2/0 AWG GroundConnection with Protective Sleeve

ELIGD104 – Structural Column - CrimpedConnection #2/0 AWG GroundConnection without Protective Sleeve

ELIGD113 – Structural Column - BoltedCompression Connection #2 AWGGround Connection with ProtectiveSleeve

ELIGD114 – Structural Column - BoltedCompression Connection #2 AWGGround Connection without ProtectiveSleeve

ELIGD115 – Structural Column - BoltedCompression Connection #2/0 AWGGround Connection with ProtectiveSleeve

ELIGD116 – Structural Column - BoltedCompression Connection #2/0 AWGGround Connection without ProtectiveSleeve

ELIGD117 – Fire Proofed StructuralColumn - Bolted CompressionConnection #2 AWG GroundConnection with Protective Sleeve

PIP ELIGD000Grounding Installation Details January 2002

Page 2 of 6 Process Industry Practices

ELIGD118 – Fire Proofed StructuralColumn - Bolted CompressionConnection #2 AWG GroundConnection without Protective Sleeve

ELIGD119 – Fire Proofed StructuralColumn - Bolted CompressionConnection #2/0 AWG GroundConnection with Protective Sleeve

ELIGD120 – Fire Proofed StructuralColumn - Bolted CompressionConnection #2/0 AWG GroundConnection without Protective Sleeve

ELIGD202 – Metallic Cable Tray Bonding -Bonding of Channel to Tray by Cable

ELIGD206 – Metallic Cable Tray Bonding -Bonding of Cable Tray by Cable

ELIGD210 – Metallic Cable Tray Bonding -1/2" Conduit Bonded to Cable Tray byConduit Clamp

ELIGD211 – Metallic Cable Tray Bonding -3/4" Conduit Bonded to Cable Tray byConduit Clamp

ELIGD212 – Metallic Cable Tray Bonding -1" Conduit Bonded to Cable Tray byConduit Clamp

ELIGD213 – Metallic Cable Tray Bonding -1-1/4" Conduit Bonded to Cable Trayby Conduit Clamp






ELIGD219 – Cable Tray Bonding - Bondingof 1/2" Conduit with GroundingBushing to Cable Tray or Channel byCable

ELIGD220 – Cable Tray Bonding - Bondingof 3/4" Conduit with GroundingBushing to Cable Tray or Channel byCable

ELIGD221 – Cable Tray Bonding - Bondingof 1" Conduit with Grounding Bushingto Cable Tray or Channel by Cable

ELIGD222 – Cable Tray Bonding - Bondingof 1-1/4" Conduit with GroundingBushing to Cable Tray or Channel byCable






ELIGD228 – Cable Tray Bonding - Bondingof 1/2" Conduit with Grounding Clampto Cable Tray or Channel by Cable

ELIGD229 – Cable Tray Bonding - Bondingof 3/4" Conduit with Grounding Clampto Cable Tray or Channel by Cable

ELIGD230 – Cable Tray Bonding - Bondingof 1" Conduit with Grounding Clamp toCable Tray or Channel by Cable

ELIGD231 – Cable Tray Bonding - Bondingof 1-1/4" Conduit with GroundingClamp to Cable Tray or Channel byCable

ELIGD232 – Cable Tray Bonding - Bondingof 1-1/2" Conduit with GroundingClamp to Cable Tray or Channel byCable

ELIGD233 – Cable Tray Bonding - Bondingof 2" Conduit with Grounding Clamp toCable Tray of Channel by Cable

ELIGD234 – Cable Tray Bonding - Bondingof 2-1/2" Conduit with GroundingClamp to Cable Tray of Channel byCable



ELIGD239 – Metallic Cable Tray Bonding -Cable Tray with Expansion orAdjustable Splice Plate

PIP ELIGD000January 2002 Grounding Installation Details


ELIGD250 – Power Transformer withGround Pad #2/0 Connection withProtective Sleeve

ELIGD251 – Power Transformer withGround Pad #2/0 Connection withoutProtective Sleeve

ELIGD252 – Power Transformer withGround Pad #4/0 Connection withProtective Sleeve

ELIGD253 – Power Transformer withGround Pad #4/0 Connection withoutProtective Sleeve

ELIGD257 – Lighting Transformer withGrounding Electrode Connection atPanel and with Protective Sleeve

ELIGD258 – Lighting Transformer withGrounding Electrode Connection atPanel and without Protective Sleeve

ELIGD259 – Lighting Transformer withGrounding Electrode Connection atTransformer and with ProtectiveSleeve

ELIGD260 – Lighting Transformer withGrounding Electrode Connection atTransformer and without ProtectiveSleeve

ELIGD303 – Motor Bonding Jumper #2without Protective Sleeve

ELIGD304 – Motor Bonding Jumper #2/0without Protective Sleeve

ELIGD313 – Motor Bonding Jumper #2 withProtective Sleeve

ELIGD314 – Motor Bonding Jumper #2/0with Protective Sleeve

ELIGD400 – 3/4" Ground Rod withCompression Connection

ELIGD401 – Ground Well with MechanicalConnection, 3/4" Ground Rod andPolyethylene Pipe Well

ELIGD402 – 3/4" Ground Rod withCompression Connection and TwoGround Wires

ELIGD403 – Ground Well with MechanicalConnection, Two Ground Wires, 3/4"Ground Rod and Polyethylene PipeWell

ELIGD404 – 10' Ground Rod CompressionConnection to #2/0 - #4/0 AWG Wire

ELIGD405 – Multiple Ground RodInstallation with CompressionConnection to #2/0 - #4/0 AWG Wire

ELIGD406 – Compression SpliceConnection #2/0 to #2/0

ELIGD407 – Compression SpliceConnection #4/0 to #4/0

ELIGD408 – Compression Tap Connection#2/0 Run - #2 Tap

ELIGD409 – Compression Tap Connection#2/0 Run - #2/0 Tap

ELIGD410 – Compression Tap Connection#4/0 Run - #2 Tap



ELIGD413 – Compression Cross Section#2/0 to #2/0

ELIGD414 – Compression CrossConnection #4/0 to #4/0

ELIGD415 – Compression Connection toRebar #2 Wire to 3/8" - 1/2" Rebar

ELIGD416 – Compression Connection toRebar #2 Wire to 5/8" - 3/4" Rebar

ELIGD417 – 1" Ground Rod withCompression Connection

ELIGD418 – Ground Well with MechanicalConnection, 1" Ground Rod andPolyethylene Pipe Well

ELIGD419 – Ground Rod withCompression Connection, TwoGround Wires and 1" Ground Rod

ELIGD420 – Ground Well with MechanicalConnection, Two Ground Wires, 1"Ground Rod and Polyethylene PipeWell

ELIGD421 – 1" x 10' Ground RodCompression Connection to#2/0 - #4/0 AWG Wire

ELIGD422 – Multiple Ground RodInstallation with CompressionConnection to #2/0 - #4/0 AWG Wire

ELIGD423 – Ground Well with MechanicalConnection, 3/4" Ground Rod andClay Tile Well

ELIGD424 – Ground Well with MechanicalConnection, Two Ground Wires, 3/4"Ground Rod and Clay Tile Well

ELIGD425 – Ground Well with MechanicalConnection, 1" Ground Rod and ClayTile Well

ELIGD426 – Ground Well with MechanicalConnection, Two Ground Wires, 1"Ground Rod and Clay Tile Well

ELIGD450 – Ground Bus Bar Attached toStructural Steel 12" Long with DrillingsOnly - Not Isolated

ELIGD451 – Wall Mounted Ground Bus Bar18" Long with Drillings Only - NotIsolated

PIP ELIGD000Grounding Installation Details January 2002


ELIGD452 – Wall Mounted Ground Bus Bar24" Long with Drillings Only - NotIsolated

ELIGD454 – MCC and Switchgear GroundBus #2/0 Ground Wire

ELIGD455 – MCC and Switchgear GroundBus #4/0 Ground Wire

ELIGD456 – Ground Bus Bar Attached toStructural Steel 12" Long with ServicePost Connectors-Not Isolated

ELIGD457 – Wall Mounted Ground Bus Bar18" Long with Service PostConnectors - Not Isolated

ELIGD458 – Wall Mounted Ground Bus Bar24" Long with Service PostConnectors - Not Isolated

ELIGD460 – Ground Bus Bar Attached toStructural Steel 12" Long with DrillingsOnly-Isolated

ELIGD461 – Wall Mounted Ground Bus Bar18" Long with Drillings Only - Isolated

ELIGD462 – Wall Mounted Ground Bus Bar24" Long with Drillings Only - Isolated

ELIGD466 – Ground Bus Bar Attached toStructural Steel 12" Long with ServicePost Connectors-Isolated

ELIGD467 – Wall Mounted Ground Bus Bar18" Long with Service PostConnectors - Isolated

ELIGD468 – Wall Mounted Ground Bus Bar24" Long with Service PostConnectors - Isolated

ELIGD500 – Pad Mounted Vessels andEquipment #2 Ground Connection withProtective Sleeve

ELIGD501 – Pad Mounted Vessels andEquipment #2 Ground Connectionwithout Protective Sleeve

ELIGD502 – Pad Mounted Vessels andEquipment #2/0 Ground Connectionwith Protective Sleeve

ELIGD503 – Pad Mounted Vessels andEquipment #2/0 Ground Connectionwithout Protective Sleeve

ELIGD601 – Fence Grounding - 2" Post,Fabric and Barbed Wire

ELIGD602 – Fence Grounding - 2-1/2"Post, Fabric and Barbed Wire

ELIGD603 – Fence Grounding - GateELIGD604 – Fence Grounding - 2" PostELIGD605 – Fence Grounding - 2-1/2" Post

PIP ELIGD000January 2002 Grounding Installation Details


1. Introduction

1.1 Purpose

The purpose of this Practice is to provide the typical information needed forconstruction of grounding systems in chemical and refining facilities. The bondingand grounding design and installation shall be in accordance with the NationalElectrical Code.

1.2 Scope

These installation details include power system and equipment grounding, staticgrounding protection for equipment in classified locations, grounding electrodeconnections, and step and touch potential grounding.

Not included in the scope of this Practice are lightning protection, computer andcontrol system grounding, and cathodic protection.

2. References

Applicable requirements in the latest edition (or the edition indicated) of the followingindustry codes, standards, and references shall be considered an integral part of this Practice.

2.1 Industry Codes and Standards

• National Fire Prevention Association (NFPA)

– NFPA 70 - National Electrical Code (NEC)

3. General Information

3.1 Category Index

Detail Number Grounding Detail Category

ELIGD060 – ELIGD099 Buildings

ELIGD100 – ELIGD149 Structural Columns

ELIGD150 – ELIGD199

ELIGD200 – ELIGD249 Cable Tray

ELIGD250 – ELIGD299 Substations and Transformers

ELIGD300 – ELIGD349 Motors


ELIGD400 – ELIGD449 Earth Terminals

ELIGD450 – ELIGD499 Ground Bus

ELIGD500 – ELIGD549 Vessels, Tanks, and Pipelines


ELIGD600 – ELIGD649 Fences

ELIGD650 – ELIGD699 Miscellaneous

PIP ELIGD000 STEERING TEAM BALLOTGrounding Installation Details 2/29/00


3.2 User Guidance

The details are provided for specific cases. They are unique for specific wire andconduit sizes, with or without protective sleeves, etc. The intent is that the details bereferenced individually as required and that only the needed details be issued to thefield. The details applicable to a particular project should be selected.

The title block can be modified to add project reference information. Themanufacturer’s name and catalog number, code numbers, and/or materials ofconstruction may be added to the bill of materials table on each detail.

PIP does not permit the figures in these details to be modified unless the PIP logoand all references to PIP are deleted from the detail. PIP’s intent is to preventmodification of these details through both the software used, when practical, andthrough exercise of its copyright control of the use of the documents.

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Grounding Installation Details