Powerware Powerware 9315 operation manual A.3 Power Wiring Installation Notes

INSTALLATION REFERENCE

A.3 Power Wiring Installation Notes

Read and understand the following notes while planning your installation:

1.Refer to national and local electrical codes for acceptable external wiring practices.

2.Material and labor for external wiring requirements are to be provided by designated personnel.

3.For external wiring, use 90°C copper wire. See the appropriate column in Table E through Table G. Wire sizes are based on using a continuous duty rated breaker.

4.Wire ampacities are chosen from Table 310-16 of the National Electrical Code (NEC). Wire is 90°C specification.

5.The neutral conductor is considered to be a current‐carrying conductor per note 10 of the Notes to Ampacity Table 310 of the NEC. If a neutral is used, the wire is derated by 80% per Note 8(a) of the Notes to Ampacity Table 310 assuming 4–6 conductors in a raceway. If there is no neutral, it is assumed that there are only 3 current carrying conductors in a raceway (one per phase).

6.All circuit breakers provided as part of the UPS system that employ adjustable trip mechanisms have been set to their maximum settings. Based upon the energy available and other equipment located on-site, these settings may need to be adjusted to ensure proper system operation and coordination. It is the customer's responsibility to conduct a breaker coordination study, so that these breakers can be adequately set for the site.

7.A bypass neutral feeder must be supplied when the output neutral is used. If no bypass neutral feeder is supplied, the output neutral of the UPS is to be connected to chassis ground.

8.See Section I for installation instructions.

A-12 EATON Powerware® 9315 UPS (500–750 kVA) Installation and Operation Manual S 164201244 Rev E www.powerware.com