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Upper stud
test port
Lower stud
test port
Upper stud
test port
Lower stud
test port
Elementary diagram
An elementary diagram of the primary
circuit is provided on the front panel of each
ground and test device. This diagram
provides a quick reference to the
arrangement of the device and should be
studied prior to each use to confirm that the
device chosen conforms to the user's
requirements.
Grounding
switch
Ground
Grounding
switch
Ground
Verify connections of upper studs and lower
studs in the switchgear circuit breaker
compartment. Device type B is designed to
ground lower studs, and device type D is
designed to ground upper studs. Confirm
that the device selected will ground the
desired studs in the switchgear
compartment.
Figure 8: Elementary diagram for
device arranged to ground lower
studs type B
Upper stud
(dummy)
Lower stud
(conductive)
Figure 9: Elementary diagram for
device arranged to ground upper
studs type D
Upper stud
(conductive)
Lower stud
(dummy)
17
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