30 30-200 kW P-164000249User's and Installation Guide Revision 2Figure 3-5: Eaton 93PM 200 kW UPS Top air exhaust kit dimensions3.2.2 UPS system power wiring preparationNOTEIf installing a maintenance bypass, a minimum of two separate feeds with upstream feederbreakers, or a single feed with two upstream feeder breakers, must be provided: one for theUPS or rectifier input breaker (if installed) and one for the maintenance bypass input. DO NOTuse a single feed or a single feeder breaker to supply both the UPS or rectifier input breakerand the maintenance bypass. If a bypass input breaker is installed in the maintenance bypassand a single-feed UPS is being installed, a single feed to the maintenance bypass is acceptablefor supplying both the UPS and the bypass.Read and understand the following notes while planning and performing the installation:• Refer to national and local electrical codes for acceptable external wiring practices.• To allow for future kVA upgrades (software and/or hardware), consider using conductors sizedfor full bypass rating of the UPS.• Material and labor for external wiring requirements are to be provided by designated personnel.• For external wiring, use 90 °C copper wire. See the appropriate information in Table 3-6:Minimum recommended multi-core cable and fuse sizes on page 31. Wire sizes are basedon using the specified breakers.• If wire is run in an ambient temperature greater than 30 °C, higher temperature wire and/orlarger size wire may be necessary.• Specification is for copper wire with a 90 °C rating.
