8
1
2
N(L2)
GROUND
L(L1)
Connection
Terminal Wiring Connections
SUPDMB20K, SUPDMB20KIEC & SUPDMB20K8
1
Unscrew the 2 screws to remove the Input Terminal Access
covers.
2
Connect the N (L2), Ground and L (L1) input wires according to
markings on the connectors as seen in the diagram.
3
After input wire attachments have been made, replace the
Input Terminal Access covers.
Hardwiring Cautions
• Wiring must be done by a qualified electrician.
• When making wiring connections, observe the cable connection regulations appropriate to your area [e.g. National Electrical Code (NEC) in
the U.S.] at all times. Be sure to install an easily accessible disconnect switch in your installation wiring so you may cut off the UPS’s AC
input during fires and other emergencies. Ensure that cables are fitted with cable sleeves and are secured by connector clamps. Tighten
connections with a torque of not less than 24-28 inch-pounds (2.7-3.2 NM).
• Make sure that your equipment is properly grounded.
• Using cables of improper size may damage your equipment and cause fire hazards. Choose appropriate cabling and protection circuits to
make wiring connections. Ground conductors must be the same size and type as the power conductors used.
• Refer to National Electrical Code (NEC) guidelines for proper wire gauge and output protection circuit requirements.
Input & Output* Ratings and Recommended Wire Sizing
For N+1 Redundant Operation
Models (Bundles)
Input Voltage
(L-L/L-N)
Max Rated
Input Current
Input Service
OCPD**
Typical Input
Wire Size
Max Rated
Output Current
Typical Output
Wire Size
SU16KRT, SU16KRT-1TF,
SU16KRTG, SU16KRTHW,
SU16KRT8
200V-240V
46A
50A
10 mm
2
(#8 AWG)
40A
10 mm
2
(#8 AWG)
SU20KRT, SU20KRT-1TF,
SU20KRTG, SU20KRTHW,
SU20KRT8
200V-240V
56A
60A
16 mm
2
(#6 AWG)
50A
10 mm
2
(#8 AWG)
For Capacity Operation
Models (Bundles)
Input Voltage
(L-L/L-N)
Max Rated
Input Current
Input Service
OCPD**
Typical Input
Wire Size
Max Rated
Output Current
Typical Output
Wire Size
SU16KRT, SU16KRT-1TF,
SU16KRTG, SU16KRTHW,
SU16KRT8
200V-240V
92A
100A
35 mm
2
(#3 AWG)
80A
25 mm
2
(#4 AWG)
SU20KRT, SU20KRT-1TF,
SU20KRTG, SU20KRTHW,
SU20KRT8
200V-240V
112A
125A
50 mm
2
(#1 AWG)
100A
35 mm
2
(#3 AWG)
* Input - hardwired; Output - hardwired or receptacles/outlets ** OCPD - Overcurrent protective device
