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104g Extra Low Voltage Switching questions and answers Graded A+
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104g Extra Low Voltage Switching questions and answers Graded A+ What does a diode do? - -Protects the coil from overheating Changes current from ac into dc In a 3 wire switch with a pilot light, how many wires does the switch have? How many does the relay have? - 4 wires for the switch 5 for the relay What is the colour coding for wires in low voltage switching? - Common (hot) = white On = red Off = black (nighttime) Return = blue After the diode = black and white What is the rating of low voltage? -
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