Figure 11. Version 1 Parallel Tie Cabinet Front Cover - Eaton 9355 Series User Manual

UPS System Installation
The nominal input/output voltages are:
• 120/208 or 127/220 Vac
Output overcurrent protection and disconnect switch must be provided by others.
Only qualified service personnel (such as a licensed electrician) should perform the UPS installation and initial
startup. Risk of electrical shock.
To hardwire the parallel system:
1. Verify that the electrical connections to the installation site have been properly installed.
2. A wall-mounted, user–supplied, readily–accessible disconnection device must be incorporated in the input
wiring.
Compare the circuit breaker ratings to the ones in
NOTE
3. Switch off utility power to the distribution point where the parallel tie cabinet and UPSs will be connected.
Be absolutely sure there is no power.
4. Determine your equipment's grounding requirements according to your local electrical code.
5. Remove the parallel tie cabinet front cover (see

Figure 11. Version 1 Parallel Tie Cabinet Front Cover

6. Remove the internal cover to gain access to the breakers (see
20 Eaton 9355 Parallel UPS (10/15 kVA) User's Guide 164201601—Rev E0
To accommodate the feature of easy system expandability, it is recommended that
initial installation of the Eaton 9355 UPS contain wiring to support the maximum
capacity of the UPS cabinet.
WARNING
Table 4.
Figure 11).
Figure 12).