Question

What is the amp of 1.5 ton AC?

Answer 1

The ampere (amp) rating of a 1.5-ton air conditioner (AC) can be calculated based on its power consumption. Here's how it works:

1. Convert tons to BTU (British Thermal Units):  
   

   1 ton of cooling = 12,000 BTUs.  
   So, 1.5 tons = 1.5 × 12,000 = 18,000 BTUs.

1. Power Consumption:  
   

   The power consumption of an AC can be calculated using the formula:
   \[
   \text{Power (W)} = \frac{\text{Cooling Capacity (BTU/hr)}}{3.412}
   \]
   For a 1.5-ton AC:
   \[
   \text{Power} = \frac{18,000}{3.412} \approx 5,280 \, \text{watts} (or 5.28 kW)
   \]

1. Calculating Current (Amps):  
   

   To calculate the amperage, we use the formula:
   \[
   I = \frac{P}{V}
   \]
   Where:
   - \( I \) is the current in amps,
   - \( P \) is the power in watts (5,280 W),
   - \( V \) is the voltage, which is typically 230V for most residential ACs.

   So:
   \[
   I = \frac{5280}{230} \approx 23 \, \text{amps}
   \]

Therefore, a 1.5-ton air conditioner typically draws around 20 to 25 amps (depending on the efficiency and power factor of the unit). Always check the specifications of your AC for more accurate numbers.