Ground Connections - Toshiba HV6AS Instruction Manual

Page 16

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 occurences and to ensure that
the metal parts of the equipment, other than live
parts, remain at ground potential.
For U and 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 L and 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 U and MU
breaker above should be followed to attach the
ground wire.
INSTALLATION
Fig. 18 Ground Connection for U and MU
Type Breakers
Fig. 19 Ground Connection for L and ML
Type Breakers