FIELD CONTROL POWER CONNECTIONS (See
Fig. 16 and 17) — For 208/230-, 460- and 575-3-60 units:
If the accessory transformer is not used, provide a 115-1-60
power source for the control circuit, through a field-supplied
fused disconnect (per NEC). This conductor must be copper
only. Control power enters the control box through a
7
⁄
8
-in.
(22.2-mm) conduit connection located on the right side of
the control section.
For 30GT080-110 and 230B-315B units with 380-3-60 or
380/415-3-50 power: Control circuit voltage is taken from
the line voltage, therefore, no additional power supply is re-
quired. If a separate power source is required, follow these
instructions and disconnect the wires between the control and
power terminal blocks.
For 30GT080-110 and 230B-315B Units with 230-3-50
or 346-3-50 power: Aseparate 230-1-50 control power source
is required. Provide a 230-1-50 power source for the control
circuit through a field-supplied fused disconnect (per NEC
or local code). This conductor must be copper only. Control
power enters the control box through a
7
⁄
8
-in. (22 mm) con-
duit connection located on the right side of the control
section.
NOTE: The 230-v unit is only available in 330 and larger sizes.
Fig. 14 — Field Power Wiring; Unit Sizes
230A-315A, 330A/B-420A/B
Fig. 15 — Field Power Wiring; Unit Sizes 230B-315B
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