Contents cont'd - hdbk109220040011

DOE-HDBK-1092-2004

7.4.15

REMOVING INSULATING GOODS FROM CONDUCTORS..........................................7-8

7.4.16

CLEANING AND INSPECTING .......................................................................................7-8

7.5

PROTECTIVE GROUNDING OF LINES AND EQUIPMENT ....................................................7-8

7.5.1

PURPOSE........................................................................................................................7-8

7.5.1.1

REDUCE THE POTENTIAL VOLTAGE DIFFERENCES ACROSS THE WORKER..7-9

7.5.2

APPLICATION .................................................................................................................7-9

7.5.2.1

DEENERGIZED LINES ...............................................................................................7-9

7.5.2.2

NEW CONSTRUCTION OR DISMANTLING OF FACILITIES..................................7-10

7.5.2.3

MINIMUM APPROACH DISTANCE FROM UNGROUNDED CONDUCTORS ........7-10

7.5.2.4

VISIBLE THREE-PHASE SHORT AND GROUND REQUIRED ...............................7-10

7.5.2.5

GROUND CIRCUIT ...................................................................................................7-10

7.5.3

GROUNDING EQUIPMENT ..........................................................................................7-11

7.5.3.1

AVAILABILITY ...........................................................................................................7-11

7.5.3.2

APPROVED CAPACITY............................................................................................7-11

7.5.3.3

GROUNDING CABLES AND HARDWARE ..............................................................7-11

7.5.3.4

GROUNDING CABLES .............................................................................................7-11

7.5.3.4.1

STRANDING .........................................................................................................7-11

7.5.3.4.2

JACKETS ..............................................................................................................7-11

7.5.3.4.3

FERRULES ...........................................................................................................7-12

7.5.3.4.4

HANDLING OF GROUNDING CABLE .................................................................7-12

7.5.3.4.5

SIZE OF GROUNDING CABLE ............................................................................7-12

7.5.3.4.6

GROUNDING CABLE LENGTH............................................................................7-12

7.5.3.4.7

GROUNDING CLAMPS ........................................................................................7-12

7.5.3.4.7.1

CLAMP TYPES...............................................................................................7-12

7.5.3.4.7.2

CLAMP JAWS.................................................................................................7-13

7.5.3.4.8

GROUNDING CLUSTER BARS ...........................................................................7-13

7.5.3.4.9

TEMPORARY GROUND RODS ...........................................................................7-13

7.5.4

TESTING BEFORE INSTALLING GROUNDS ..............................................................7-14

7.5.5

ATTACHING AND REMOVING GROUNDS .................................................................7-14

7.5.6.1

WORK LOCATION ....................................................................................................7-14

7.5.6.3

OTHER LOCATIONS ................................................................................................7-15

7.5.7

TESTING WITHOUT GROUNDS ..................................................................................7-15

7.5.8

GROUND PERSONNEL................................................................................................7-15

7.6

INSTALLING OR REMOVING CONDUCTORS ......................................................................7-15

7.6.1

WORKING ON ENERGIZED LINE OR EQUIPMENT ...................................................7-15

7.6.2

STRINGING OR REMOVING DEENERGIZED CONDUCTORS..................................7-16

7.6.3

STRINGING ADJACENT TO ENERGIZED LINES .......................................................7-17