For sports such as American football, rugby, football or handball speeds of up to 40 km/h and more are necessary. These speeds need to be reached on a treadmill with athletes who sometimes weigh more than 100 kg (220 lbs). For that a treadmill needs power apart from anything else. Comparable with industrial machinery or electric ovens and many other types of equipment the standard 230 Volt / 16 Amp power supply doesn’t provide enough power and a 3 phase supply with 3 x 400 Volt is necessary. This avoids unwanted speed reduction or even automatic shut downs due to overload.