Understanding Electromagnetic Induction: How Line Voltage Wiring Can Interfere with Milli-Volt Wiring Accuracy

Milli-Volt Wiring should be isolated from line voltage wiring because:a) The line voltage wire will induce a voltage into the milli-volt wiringb) The current in the low voltage wire will be reduced to that of the milli-volt wirec) The resistance of the milli-volt wiring will be increasedd) The line voltage wire will overheat the low voltage wire

A

a) The line voltage wire will induce a voltage into the milli-volt wiring.

The reason why milli-volt wiring should be isolated from line voltage wiring is that the presence of line voltage wiring can interfere with the milli-volt signal. This is due to electromagnetic induction, where the electrical current in the line voltage wire can induce a voltage in the nearby milli-volt wiring, disrupting the accuracy of the measurement. The induction effect increases with the proximity of the two wires, and so it is important to keep the wires separated to minimize the interference. Additionally, it is important to keep the milli-volt wiring shielded to further protect against any interference from external electrical sources.

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