Powerware Ferrups FE/QFE 500VA - Manual (Page 55)

Internal Bypass Switch Installation
49 Powerware ® FERRUPS FE/QFE UPS (500 VA–18 kVA) Installation Guide
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NOTE 10 The load fuse or circuit breaker should be sized to match the load current
requirements.
NOTE 11 For 208 Vac, use a step-up transformer For 480 Vac, use a step-down
transformer. Use an isolation transformer with a 120/240 grounded center-tapped
neutral output. Do not use a buck/boost transformer.
60 Hz 120 Vac Input - 120 Vac Output
Figure 17. FE 4.3–7 kVA UPS with Internal Bypass Switch
Table 23. Minimum Recommended Circuit Breakers for 120 Vac
Charger 4.3 kVA 5.3 kVA 7 kVA
Standard 40 50 70
10A 45 60 70
20A 50 60 70