Here are the electrical requirements for Modern Flames 60" Landscape Fireplace LFV2-60/15-SH:
1530 Watts, 12.75 Amps, 120V.
The fireplace uses:
750 Watts on Low heat setting and 1500 Wattts on High.
100 Watts with heater OFF
Here is a link to the product manual: Manual and specs sheet: Specs