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Internal Bypass Switch Installation
49
Powerware
®
FERRUPS FE/QFE UPS (500 VA–18 kVA) Installation Guide : Rev A www.powerware.com
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 7kVA
Standard 40 50 70
10A 45 60 70
20A 50 60 70