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Intermatic sg320 modular User Manual

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Before starting the installation, measure the Line voltage with an AC voltmeter to ensure the
correct device has been selected for the current  application.  The MCOV (maximum continuous
operating voltage) Cannot exceed the maximum limits for the following service voltages:
INSTALLATION INSTRUCTIONS
120/208Vac, Three Phase Wye, 4 Wire + Ground
277/480Vac, Three Phase Wye, 4 Wire + Ground
120/240Vac, Three Phase Delta, 4 Wire + Ground
240 or 480Vac, Three Phase Delta, 3 Wire + Ground
120 or 240Vac, Single Phase, 2 Wire + Ground
Requires a 1 Pole Breaker
Requires a 2 Pole Breaker
Requires a 3 Pole Breaker
120/240Vac, Split Phase, 3 Wire + Ground
PHASE A
NEUTRAL
GND
120 VAC
120 VAC
PHASE B
120 or 240 VAC 
PHASE
NEUTRAL
GND
PHASE A
NEUTRAL
GND
PHASE B
PHASE C
120 or 277
VAC
208 or 480
VAC
PHASE A
PHASE B
PHASE C
NEUTRAL
208
VAC
240
VAC
240
VAC
(High Leg) “Orange”
240 or 480
VAC
PHASE B
PHASE A
PHASE C
GND
GND
OR
240 or 480
VAC
240 or 480
VAC
208 or 480
VAC
120 or 277
VAC
120 or 277
VAC
208 or 480
VAC
Requires a 3 Pole Breaker
Requires a 3 Pole Breaker
[Figure #6]
[Figure #7]
[Figure #5]
[Figure #4]
[Figure #3]
STANDARD ELECTRICAL CONFIGURATIONS
120VAC=150MCOV
220VAC=320MCOV
230VAC=320MCOV
240VAC=320MCOV
277VAC=320MCOV
480VAC=550MCOV
NOTE
Wye Configuration is applicable for:
220/380VAC 
230/400VAC 
240/415VAC 
120 VAC
120 VAC