Installation manual

Section 200: Starting the AC Installation
The UPS must be installed by a qualified electrician.
201 Positioning the Equipment
❑1. Put the UPS in place. Follow the guidelines in Section 103.
❑2. If applicable, mount the external bypass switch within sight of the UPS.
❑3. An AC disconnect device must be located within sight of the UPS. The AC disconnect device
should be one of the following:
• An external bypass switch with an AC disconnect switch.
• A separate AC disconnect switch.
• The incoming AC line fuse box or panel, if located within sight of the UPS.
202 Sizing the Overcurrent Protection Devices and Wires
❑1. Table 6 provides the input current and the recommended U.S. circuit breaker size for each
model, battery charger, and input voltage. Outside of the U.S., size the UPS input circuit break-
er according to local codes. If you might add the optional 15 amp battery charger in the future,
you may wish to size the input circuit breaker and the wires accordingly now.
NOTE: If you are installing a 120/208 or 127/220 output voltage combination, call Best
Power’s Worldwide Service or the nearest Best Power office for instructions on siz-
ing the input circuit breaker.
Table 6: Recommended Input Circuit Breaker*
8
* For optional 380/400/415 VAC input, see Table 10 on page 21.
200V 208V 220V 230V 240V
UPS
Model
Battery
Charger
Input
Current
Circuit
Breaker
Input
Current
Circuit
Breaker
Input
Current
Circuit
Breaker
Input
Current
Circuit
Breaker
Input
Current
Circuit
Breaker
UT3K Standard 17 amps 25-amp 17 amps 25-amp 16 amps 20-amp 15 amps 20-amp 14 amps 20-amp
UT3K/15C 15 amp 21 amps 30-amp 21 amps 30-amp 20 amps 25-amp 19 amps 25-amp 18 amps 25-amp
UT4K Standard 22 amps 30-amp 22 amps 30-amp 20 amps 25-amp 20 amps 25-amp 19 amps 25-amp
UT4K/15C 15 amp 27 amps 35-amp 26 amps 35-amp 24 amps 30-amp 23 amps 30-amp 22 amps 30-amp
UT5K Standard 28 amps 35-amp 27 amps 35-amp 25 amps 35-amp 24 amps 30-amp 23 amps 30-amp
UT5K/15C 15 amp 32 amps 40-amp 31 amps 40-amp 29 amps 40-amp 28 amps 35-amp 27 amps 35-amp
UT8K Standard 45 amps 60-amp 43 amps 60-amp 41 amps 60-amp 39 amps 50-amp 38 amps 50-amp
UT8K/15C 15 amp 49 amps 70-amp 47 amps 60-amp 45 amps 60-amp 43 amps 60-amp 41 amps
60-amp