UFC 3-560-01
6 December 2006
Including change 1, 7 December 2006
Figure 7-2. Insulated and Uninsulated Aerial Lift Vehicle Grounding Connections
Insulated aerial lift
Uninsulated aerial lift
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TEMPORARY GROUNDING OF UNDERGROUND LINES. Ground all
possible sources of power (including transformer backfeed). Omission of grounds will
be permitted only if their application decreases the work hazard. Install protective
grounds at equipment terminations or ground by spiking cable (using an approved tool)
prior to work on the cable. Use approved ground sets of the type shown on Figure 7-3.
Figure 7-3. Underground System Grounding Sets
Live-front pad-mount
Cable clamps with
Elbow grounding
Cable spiking
equipment
a penetrating
set
grounding jumper
grounding set
grounding spike
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OPENING OR SPLICING DEENERGIZED CONDUCTORS. Conductors may
be spliced at ground level, from aerial lift equipment utilizing ground mats (uninsulated
aerial lifts), or from insulating platforms (insulated aerial lifts). Grounding for conductive
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