We advise all users to plug the scanner into a power regulating surge protector. Power fluctuations can affect the functioning of the scanner and result in distorted scans. This is a particular concern in older homes and buildings where wiring may be old.
Surge protectors will not only regulate power but protect your equipment from power surges. Some power strips (i.e. extension cords with extra outlets) don't offer this protection so, if your scans are looking distorted, check to see if your power source is the reason why.