Plotters T790 & T1300 (44 inch) are operating on construction site, where raw voltage fluctuation is more than usual. UPS power of 3 KVA & 20 KVA is also available. Working environment is properly enclosed and isolated from actual construction. Large office staff and proper air conditioning is in place. As per specs around 120 W is max operating power and operating voltage is 100-240 V (+/- 10%). Currently they are on RAW power. Looking in to surge requirement while power on, or from standby to operating mode, whether plotters should be placed on UPS (if yes, 3KVA or 20 KVA?) or will RAW power is ok?