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For troubleshooting, call technical assistance at 1-800-237-4567 or [email protected]
14
IO-70061
01/2020
Figure 8:
Three-Phase, Three- or Four-Wire, Grounded WYE Installation
1
Figure 9:
Three-Phase, Three- or Four-Wire, High-Leg Delta Installation
2
Figure 10:
Three-Phase, Three-Wire, Delta Installation
Figure 11:
Three-Phase, Three-Wire, Corner Grounded, Delta Installation
ASCO 430 Surge Protective Device (SPD)
Wiring
Note 1:
The neutral conductor is not present on
three-wire Wye grounded power systems. For
improved operation of the SPD, bond the neutral
and ground lugs together inside the SPD.
Phase A (Black)
Phase C (Black)
Ground (Green)
V
}
CONTACTS
NO C
NC
DRY
SERVICE
A
C
TWO POLE
A
C
G
HAZARD OF ELECTRIC SHOCK,
EXPLOSION, OR ARC FLASH
• The high-leg of the power system must
connect to the B phase lug of the SPD.
Failure to follow these instructions will result
in death or serious injury.
Note 2:
The neutral conductor is not present
on three-wire High-Leg Delta grounded power
systems. For improved operation of the SPD,
bond the neutral and ground lugs together inside
the SPD.
DANGER