What is the size of the largest electrical conductor?

The largest electrical conductor among the options provided is No 4. In electrical wiring, conductor sizes are designated by the American Wire Gauge (AWG) system, where a lower gauge number indicates a larger conductor size.

The significance of using larger conductors lies in their ability to carry higher currents with less resistance, which is crucial for ensuring electrical systems operate safely and efficiently. Larger conductors help minimize voltage drop over longer distances and reduce the risk of overheating.

Understanding these conductor sizes is essential for anyone working in AC and refrigeration, as selecting the appropriate wire gauge is vital for system safety and performance.