Precor p20 - Manual (Page 11)

Important Safety Instructions
9
Electrical Recommendations: 120 V and 240
V Treadmills
Note: This is a recommendation only. NEC (National Electric
Code) guidelines or local region electric codes must be
followed.
You should have received a power cable that meets your local
electrical code requirements along with the equipment.
Precor treadmills must be connected to a 20 amp individual
branch circuit that can be shared only with one PVS. If you
need additional help with the power connections contact your
Precor authorized dealer.
Important: An individual branch circuit provides a hot conductor
and neutral conductor to a receptacle. The conductors must not be
looped, "daisy-chained", or connected to any other conductors.
The circuit must be grounded according to NEC guidelines or local
region electric codes.
Figure 1: North American 120-volt, 20-amp power receptacle
Figure 2: North American 240-volt, 20-amp power receptacle