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Units Without Disconnect Option
C
11
13
Disconnect
per
NEC
208/230-1-60
Units With Disconnect Option
2
L1
4
Disconnect
L2
6
L3
Disconnect factory test leads; discard.
Fig. 15 — Power Wiring Connections
WARNING
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
Do not connect aluminum wire between disconnect switch
and 50TC unit. Use only copper wire. (See Fig. 16.)
ELECTRIC
DISCONNECT
SWITCH
WIRE ONLY
Fig. 16 — Disconnect Switch and Unit
UNITS WITH FACTORY-INSTALLED NON-FUSED
DISCONNECT — The factory-installed option non-fused
disconnect (NFD) switch is located in a weatherproof enclo-
sure located under the main control box. The manual switch
handle and shaft are shipped in the disconnect enclosure. As-
semble the shaft and handle to the switch at this point. Discard
the factory test leads (see Fig. 15).
Connect field power supply conductors to LINE side termi-
nals when the switch enclosure cover is removed to attach the
handle.
C
IFC
or
(1-ph
11
13
13
TB
IFM)
Disconnect
per
NEC
L1
L2
L3
208/230-3-60
460-3-60
375-3-60
575-3-60
1
Optional
Factory
3
Wiring
Switch
5
COPPER
ALUMINUM
WIRE
Fig. 17 — Location of Non-Fused Disconnect
To field install the NFD shaft and handle:
1. Remove the unit front panel (see Fig. 2).
2. Remove (3) hex screws on the NFD enclosure - (2) on the
face of the cover and (1) on the left side cover. See
Fig. 18.
3. Remove the front cover of the NFD enclosure.
4. Make sure the NFD shipped from the factory is at OFF
position (the arrow on the black handle knob is at OFF).
5. Insert the shaft with the cross pin on the top of the shaft in
the horizontal position.
6. Measure from the tip of the shaft to the top surface of the
black pointer; the measurement should be 3.75 - 3.88 in.
(95 - 99 mm).
7. Tighten the locking screw to secure the shaft to the NFD.
8. Turn the handle to the OFF position with red arrow point-
ing at OFF.
9. Install the handle on to the painted cover horizontally
with the red arrow pointing to the left.
10. Secure the handle to the painted cover with (2) screws
and lock washers supplied.
11. Engaging the shaft into the handle socket, re-install (3)
hex screws on the NFD enclosure.
12. Re-install the unit front panel.
Fig. 18 — Handle and Shaft Assembly for NFD
13
Enclosure
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