Visit the Tables page to view reference tables such as Maximum Ampacity for Current-Carrying Conductors. Wire gauge per amps Custom Car Audio, Crutchfield, Reference Chart. Class D: (Total wattage / 90 ) / 13.8 volts. Without proper wiring, your amplifier cant deliver the power that your speakers. These formulas are: Class AB: (Total wattage / 65) / 13.8 volts. Each class uses different values for the formula 1000 watt amp calculation. To calculate wire ampacity for a circuit, use the Wire Ampacity Calculator or the Advanced Wire Ampacity Calculator.įor long conductor runs where voltage drop may be an issue, use the Voltage Drop Calculator to determine proper conductor sizing and maximumĬircuit length. Amplifiers generally fall under two product classifications: classes AB and D. Current (ampacity) Notes: The current ratings shown in the table are for power transmission. To calculate wire size for a circuit, use the Wire Size Calculator or the Advanced Wire Size Calculator. American Wire Gauge (AWG) Sizes and Properties Chart / Table. Although wire gauge sizes smaller than 10 gauge may be. This calculator is based on information found in this reference guide, and can help electricians troubleshoot maintenance and control circuits. Current Draw figures are based on RMS Power of the amplifier with a 50 efficiency rating. Breaker size should generally be 125% of FLA of motor.Ī good field reference for maintenance and troubleshooting is Ugly's Electric Motor and Controls ( Ugly's Electric Motors And Controls, 2014 Edition ). Note: Always refer to NEC when sizing conduit.
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