© 2020 ASCO Power Technologies. All Rights Reserved
For troubleshooting, call technical assistance at 1-800-237-4567 or [email protected]
18
IO-70064
05/2020
Figure 8:
Three-Phase, Three- or Four-Wire, High-Leg Delta Installation with
Integral Switch
A
2
1
3
4
6
5
7
8
B
C
N
A
B
C
N
A B
N
C
G
THREE POLE
C
N
G
A
TWO POLE
2
1
3
4
6
5
7
8
G
C B
N
A
THREE POLE W/ DS
N
G
B
SINGLE POLE
C
N
G
B
A
THREE POLE
C
2
1
3
4
6
5
7
8
B
A
N
C
B
A
N
A
B
N
C
G
THREE POLE
C
N
G
A
TWO POLE
2
1
3
4
6
5
7
8
G
C B
N
A
THREE POLE W/ DS
N
G
B
SINGLE POLE
C
N
G
B
A
THREE POLE
ASCO 460/465/480/485 Surge Protective Device (SPD)
Wiring
SPD
PHASE C
PHASE B
PHASE A
NEUTRAL
GROUND
See Note 6
N
A
C
B
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 6:
The neutral conductor is not present on
three-wire grounded power systems. For these
systems, bond the neutral and ground lugs to-
gether inside the SPD using #10 AWG wire.
DANGER
