Ground Connections - Toshiba HV6FS Instruction Manual

INSTALLATION

GROUND CONNECTIONS

The circuit breaker must be grounded in
accordance with the requirements of the National
Electrical Code, Article 250 or applicable local
standards.
Proper grounding
WARNING
connections must be made
to the circuit breaker before
incoming power is applied.
It is very important that the circuit breaker and its
enclosure be adequately grounded to protect the
operator from injury in the event of short circuits
or other abnormal occurrences and to ensure
that the metal parts of the equipment, other than
live parts, remain at ground potential.
For MU type circuit breakers, the ground terminal
is on the left side of the operating mechanism as
viewed from the rear of the breaker. To make
the ground connection, first remove the fastening
M6 hex head bolt and crimp-on terminal
(provided with the breaker) and crimp the
terminal to the end of the ground wire (Fig. 18).
Then, reattach the terminal using the same bolt
previously removed and torque to 50-65 kgf-cm
(43-56 in-lb).
For ML type circuit breakers, the ground terminal
is on the left side of the terminal block as viewed
from the rear of the breaker (Fig. 19). The same
instructions as for the MU breaker above should
be followed to attach the ground wire.
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Fig. 18 Ground Connection for MU Type
Breaker
Fig. 19 Ground Connection for ML Type
Breakers
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