Table of Contents
Foreword
Section1-SCOPE
Section2-REFERENCES
Section3-GENERAL
3.1SuccessfulOperationofPanelboards
3.2QualifiedPersonnel
3.3DefinitionofQualifiedPersonnel
3.3.1Requirements
3.3.2EstablishedSafetyPractices
3.3.3ProtectiveEquipment
3.3.4FirstAid
3.4SuitableRatings
Section4-INSTALLATIONOFPANELBOARDCABINETS(BOXES)
4.1InstallationInstructions
4.2LocationinBuilding
4.3FlammableMaterial
4.4UnusualServiceConditions
4.5IndoorDampLocations
4.6WetLocations
4.7ClearancefromCeiling
4.8SpacearoundtheCabinet
4.9MountingofCabinet
4.10FlushMountinginWall
4.11UnusedOpeningsinCabinet
4.12GroundingofPanelboardCabinets
Section5-INSTALLATIONOFCONDUITANDCONDUCTORS
5.1ConduitsInstallation
5.2KnockoutsRemoval
5.2.1FirstStep-RemoveCenterKnockout
5.2.2NextStep-RemoveRings
5.3NationalElectricalCode,Article300
5.4ConductorLength
5.5ExerciseCare
5.6NationalElectricalCode,Section725.54
Section6-INSTALLATIONOFPANELBOARD
6.1ProperStorage
6.2Unpacking
6.3Inspection
6.4Care
6.4.1Cleaning
6.5Manufacturer'sInstructions
6.6Installation
6.6.1AlignmentDevices
6.6.2Panelboard
6.6.3FlangeofDeadfrontShield
6.7LineAndBranchConductors
6.7.1Conductors
6.8PanelboardGrounding
6.8.1EquipmentGroundingConductors
6.9ProperTypeOrClassAndRating
6.10Debris
6.11StepsInSection7
Section7-STEPSTOBETAKENBEFOREENERGIZING
7.1AccessibleElectricalConnections
7.2BlocksandPackingMaterials
7.3Switches,CircuitBreakers,andOtherOperatingMechanisms
7.4ShortCircuitsandGroundFaults
7.5GroundFaultProtectionSystem
7.6AdjustableTimeCurrentTripDeviceSettings
7.7GroundingConnections
7.8ForeignMaterial
Section8-INSTALLATIONOFCABINETFRONT
8.1CabinetFrontorTrimPackage
8.2Unpacking
8.3CoversandDoors
8.4Touch-Up
8.5FrontAlignment
Section9-ENERGIZINGEQUIPMENT
9.1QualifiedPersonnel
9.2LoadonthePanelboard
9.3EnergizedinSequence
9.4LoadsSuchasLightingCircuits,Contactors,Heaters,
andMotors
Section10-MAINTENANCE
10.1MaintenanceProgram
10.2PanelboardWhichHasBeenCarryingItsRegularLoad
foratLeast3Hours
10.3InspectPanelboardOnceEachYear
10.4AccumulationofDustandDirt
10.4.1VisibleElectricalJointsandTerminals
10.4.2ConductorsandConnections
10.4.3FuseClipContactPressureandContactMeans
10.4.4PlugFuses
10.4.5ConditionsWhichCausedOverheating
10.5ProperAmpere,Voltage,andInterruptingRatings
10.5.1MechanismsFreeandinProperWorkingOrder
10.6OperationofallMechanicalComponents
10.6.1SwitchOperatingMechanisms
10.6.2IntegrityofElectricalandMechanicalInterlocks
10.6.3MissingorBrokenParts
10.6.4Manufacturer'sInstructions
10.6.5AccessibleCopperElectricalContacts,Blades,
andJaws
10.7DamagedInsulatingMaterialandAssemblies
10.8MoistureorSignsofPreviousWetnessorDripping
10.8.1ConduitsWhichHaveDrippedCondensate
10.8.2CracksorOpenings
10.8.3InsulatingMaterialWhichisDamporWet
10.8.4ComponentDevicesWhichShowEvidenceofMoisture
Damage
10.9BeforeCleanupandCorrectiveActionisAttempted
10.10SevereElectricalShortCircuit
10.11GroundFaultProtectionSystem
10.12InsulationResistance
10.12.1SevereShortCircuit
10.12.2PartsReplaced
10.12.3PanelboardExposedtoHighHumidity
Section11-PERMISSIBLELOADINGOFPANELBOARDS
11.1NationalElectricalCode
11.2HarmonicsinElectricalSystem Abstract
Covers single panelboards or groups of panel units suitable for assembly in the form of single panelboards, including buses, and with or without switches or automatic overload protective devices (fuses or circuit breakers) or both.
