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Installation Instructions for E2F , E2FM Mining Service Circuit Breakers
BEFORE MOUNTING THE CIRCUIT BREAKER IN AN
ELECTRICAL SYSTEM, MAKE SURE THE CIRCUIT
BREAKER IS SWITCHED TO THE OFFPOSITION
AND THAT THERE IS NO VOLTAGE PRESENT
WHERE WORK IS TO BE PERFORMED. SPECIAL
ATTENTION SHOULD BE PAID TO REVERSE FEED
APPLICATIONS TO ENSURE NO VOLTAGE IS
PRESENT. THE VOLTAGES IN ENERGIZED EQUIP-
MENT CAN CAUSE SEVERE PERSONAL INJURY OR
DEATH.
2.2.
Depending on the equipment configuration, the cir-
cuit breaker can be mounted using different styles
of hardware. The following steps describe how to
mount the circuit breaker using standard hardware.
When special hardware is needed (for example,
with the electrical operator), the instruction leaflet
describing the accessory also describes the special
mounting arrangements.
Note: Before mounting the circuit breaker, check if
the termination devices should be installed first. See
instructions supplied with terminations.
2.3. To mount the circuit breaker, perform the following
steps.
a.
For individual mounting panels, make sure that
mounting panel is predrilled using bolt drilling
plan (Fig. 2-1). For panelboard mounting, only
load end support mounting holes are required.
For deadfront cover applications, make sure
mounting panel cover is cut out to correct
escutcheon dimensions (Fig. 2-2).
b.
If circuit breaker includes factory installed inter-
nal accessories, make sure accessory wiring
can be reached when the circuit breaker is
mounted.
c.
Position circuit breaker on mounting surface.
d.
Install mounting screws, washers, and nuts.
Tighten screws firmly, but do not exceed 28
pound-inches (3.16 N.m.).
2.4.
If an optional terminal end cover is to be installed
with the circuit breaker (usually line-end only), it
must be positioned before cables are connected to
terminals.
WARNING
Line End
Circuit Breaker
Handle
Load End
Fig. 2-1
Circuit Breaker Mounting Bolt Drilling Plan
Circuit Breaker
Handle
(6.35) Dia. Hole for
Access to Pickup Adjustment
Button (Magnetic only}
Fig. 2-2. Circuit Breaker Escutcheon Dimensions
CAUTION
WHEN ALUMINUM CONDUCTORS ARE USED, THE
APPLICATION OF A SUITABLE JOINT COMPOUND
IS RECOMMENDED TO REDUCE THE POSSIBILITY
OF TERMINAL OVERHEATING. TERMINAL OVER-
HEATING CAN CAUSE NUISANCE TRIPPING AND
DAMAGE TO THE CIRCUIT BREAKER.
2.5. After mounting the circuit breaker, line and load ter-
minals and accessory leads should be connected.
EATON CORPORATION www.eaton.com
Instruction Leaflet IL29C119C
Effective August 2011
Circuit Breaker
Handle
33.66
Access to Push-to-Trip
3
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