How many amps will a 208-volt, 17.2 KVA single-phase load draw at a 120/208-volt three-phase panel?

How many amps will a 208-volt, 17.2 KVA single-phase load draw at a 120/208-volt three-phase panel?

• A. 48.6 amps
• B. 82.7 amps
• C. 166 amps
• D. 142 amps

Answer: (B)

To determine how many amps a 208-volt, 17.2 KVA single-phase load will draw from a 120/208-volt three-phase panel, you can follow these calculations: First, convert KVA to watts. Since 1 KVA equals 1,000 watts, a 17.2 KVA load translates to: 17.2 KVA × 1,000 = 17,200 watts. Next, use the formula for calculating current (amps) in a single-phase system: Amps = Watts / Volts. Plugging in the values, you have: Amps = 17,200 watts / 208 volts = 82.7 amps. This calculation shows that the 208-volt, 17.2 KVA single-phase load will draw 82.7 amps. The choice that corresponds to this result confirms the calculation based on the relationship between power (in watts), voltage (in volts), and current (in amps). This is a crucial aspect of electrical calculations, underscoring how to apply basic formulas to determine how much current a load will require at a given voltage.

To determine how many amps a 208-volt, 17.2 KVA single-phase load will draw from a 120/208-volt three-phase panel, you can follow these calculations:

First, convert KVA to watts. Since 1 KVA equals 1,000 watts, a 17.2 KVA load translates to:

17.2 KVA × 1,000 = 17,200 watts.

Next, use the formula for calculating current (amps) in a single-phase system:

Amps = Watts / Volts.

Plugging in the values, you have:

Amps = 17,200 watts / 208 volts = 82.7 amps.

This calculation shows that the 208-volt, 17.2 KVA single-phase load will draw 82.7 amps. The choice that corresponds to this result confirms the calculation based on the relationship between power (in watts), voltage (in volts), and current (in amps). This is a crucial aspect of electrical calculations, underscoring how to apply basic formulas to determine how much current a load will require at a given voltage.