ICT UPS Load Calculator
Estimate total wattage and UPS runtime for your site. Add devices, see total load and recommended UPS size.
Devices
Desktop PC
120W each
Monitor 24"
25W each
Laptop
35W each
POS Terminal
25W each
Laser Printer idle
60W each
Laser Printer printing
400W each
Router / Firewall
15W each
Network Switch 24-port
25W each
WiFi Access Point
12W each
VoIP PBX
35W each
IP Phone
5W each
IP Camera
8W each
DVR / NVR 16ch
45W each
1U Server
150W each
Total Load
493 W
With 15% UPS loss: 567 W
Select UPS
At current load: Line-Interactive ≈ 46 min, Online ≈ 43 min (~3 min less)
UPS Capacity: 1600W (2000VA)
Load: 35%
Estimated runtime: 41 min
Battery: Lead-Acid (80% usable) with 90% derate.
Daily energy: 13.6 kWh
Monthly energy: 408 kWh
Use this for budgeting UPS, generator sizing and monthly power estimates. Real runtime varies by battery age, temperature and load type.