Installation and Configuration
16
Figure 6
Distribution box electrical connections diagram
S4KPAD-CEHW and S4KPAD-CEHW-MBS Terminal Block Connections
Conduit entry holes are provided on the rear and side of the box. Input and output wiring should not
share the same conduit.
Table 1
Electrical specifications
Input
Current
Rating
Recommended
(Maximum) External
Overcurrent Protection
Recommended Wire
(Including ground wire)
(758C copper wire)
Maximum Wire
Accepted by
Terminal Block
Terminal
Tightening
Torque
24A
32A
6-10mm
2
(8-10AWG)
10mm
2
(8AWG)
2.26 Nm (20 in-lb)
NOTE
1. Note1 The installer must provide circuit breaker protection according to local codes. The
mains disconnect should be within sight of the UPS or have an appropriate lock-out.
Maintain service space around the UPS or use flexible conduit.
2. Note 2 The installer must provide output distribution panels, circuit breaker protection, or
emergency disconnects according to local codes. Output circuits must not share a common
conduit with any other wiring.
Mains
Input
Output
Output
Input
CB
Input
CB
UPS
Output
CB
32A
External
Branch
CB
32A
External
Branch
CB
30
30
30
30
UPS - PFC, Battery, Inverter
UPS - PFC, Battery, Inverter
Byp.
Inv.
S4KPAD-CEHW
S4KPAD-CEHW-MBS
Mains
UPS
Output
CB
Input
N
N
L
L
N
N
L
L
OUTPUT
INPUT
32Amp Max Branch
Overcurrent Protection
6-10mm
2
- Use Copper Wire Only
OUTPUT TO LOAD
INPUT TO UPS
