
S280-70-10
23
1
4
3
2
7
12
11
10
9
8
TB8
Vo
ltage Sensing Connections
Source
Load
V (1-2)
V(3-4)
V(5-6)
V1
V2
V3
5
6
BØ
Factory Wiring for
Wye Connection
1
6
5
4
3
2
Power Connections
TB7
120/240
NEU
NEU
120 (L1)
120
(L2)
TRANSFER
RELA
Y
COIL
Power to Control
Heater
&
Convenience Outlet
Transfer Rela
y
(shown de-energized)
Y
Ø
15
Am
p
fuse
15
Amp
fuse
Figure 14.
Default factory wiring (transfer relay connections) connected to B-Phase voltage metering with B-Phase incoming
supply.
Note:
Terminal Block positions TB7-3 and TB7-4
ar
e
factory-jumper
ed
together
.
Terminal Block positions TB7-5 and TB7-6 ar
e factory-jumper
ed together
.