Series/Parallel Circuits

[Alwayslearningelec]

I am taking one of MH online course and came across this. It seems contradictory to me. THanks.

Internal Equipment Wiring
The internal wiring of many types of equipment, such as motor windings, will be connected in series. For example, a 115/230V rated motor connected to a 230V circuit must have the windings connected in series so that each winding will receive at least 115V. Figure 10?5


Often electrical components within appliances, such as water heaters and motors, have their components connected in parallel. Figure 11?5

 

[don_resqcapt19]

A dual voltage, 120/240 volt motor will have two windings rated at 120 volts. You connect them in parallel to run at 120 and in series to run the motor at 240. In either case each winding sees 120 volts. Some heaters are also designed this way.

 

[Alwayslearningelec]

A dual voltage, 120/240 volt motor will have two windings rated at 120 volts. You connect them in parallel to run at 120 and in series to run the motor at 240. In either case each winding sees 120 volts. Some heaters are also designed this way.

Thanks.