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##### Asked by: Hadrian Strauff

home and garden indoor environmental quality# How many amps is a 1.5 ton AC?

**Ton**yields approximately 10

**amps**of draw. In example a 40

**amp**240 volt or 208 volt will draw approximately 9600 Watts at 240 and approximately 8320 Watts at 208.

Correspondingly, how much current does a 1.5 ton AC draw?

Cooling capacity of 1 **ton** is equal to 3517 W of power. Hence, cooling capacity of **1.5 ton** = 5275 W of power. If the supply voltage is around 220 V **AC**, then the running **current** will be 1510/220 = 6.9 A.

**AC three phase watts to amps calculation formula**

- I
_{(}_{A}_{)}= P_{(}_{W}_{)}/ (√3 × PF × V_{L-L}_{(}_{V}_{)}) So amps are equal to watts divided by square root of 3 times power factor times volts. - amps = watts / (√3 × PF × volts) or.
- A = W / (√3 × PF × V) Example.
- I = 330W / (√3 × 0.8 × 110V) = 2.165A. Amps calculation with line to neutral voltage.

Similarly, it is asked, how many amps does an AC use?

Most common voltage ratings for AC units are 115, 125 and 220 volts, and amperage rating can run from **15** to **20 amps**. The lower two voltage ratings are common in smaller units, while units with a rating higher than 15,000 BTUs will require a 220-volt circuit.

Central **AC** Electrical **Requirements** Central air conditioning units **require** 208/240 volts. They must be hard wired and have a dedicated circuit. Units **require** anywhere from 15-60 amps depending on **how many** tons they are.