Determine the correct wire gauge for 220V-240V AC circuits like appliances and tools.
Circuit Details
Recommendations
Overview
At 220V/240V, wire size is mainly determined by the load's amperage (ampacity), but voltage drop becomes important over long distances (e.g., feeders to workshops).
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Pro Tips
Common 240V loads: Electric dryers (30A), Ranges (40-50A), AC units.
Voltage drop for feeders should generally be kept below 3%.
Ensure your breaker matches the wire's ampacity.
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Fun Facts
"Using 240V is more efficient than 120V for high-power loads because it halves the current required for the same wattage."
"Most North American homes have 'split-phase' 240V service."
"Higher voltage allows for thinner wires over the same distance compared to lower voltage."
