31. The biggest single contributor was construction and mining contactor Kiewit Corporation, which gave her campaign over $ 16, 000. 32. These controlled the power output directly, with a mechanism that breaking the power to the motors occurred in a contactor . 33. The electric one would need a'contactor control'because most are 240 volts and 20 amps = 4800 watts. 34. To mitigate this, plasma contactor units ( PCU ) s create current paths between the station and the ambient plasma field. 35. For this purpose, in starting notch # 12 the controller closes a pair of parallel contactors and opens the bridge contactor . 36. Breaking the beam closed a contactor on to an 80 Volt DC supply and connected it in parallel with a service contactor. 37. Breaking the beam closed a contactor on to an 80 Volt DC supply and connected it in parallel with a service contactor . 38. Motion was controlled by a four speed contactor , which automatically selected a sequence of speeds at a pre-determined rate. 39. In 1943 the house, along with 16 acres, was purchased by Kenneth George MacMaster, an engineering contactor and property developer. 40. The other trams had control current controllers, which was a 100 V power which controlled a contactor which again controlled the motors.