A three-phase 69 kVA load connected to a 120/240-volt three-phase panel will draw how many amps through each conductor?

A three-phase 69 kVA load connected to a 120/240-volt three-phase panel will draw how many amps through each conductor?

• A. 48.6 amps
• B. 166 amps
• C. 27.8 amps
• D. 55.3 amps

Answer: (B)

To determine the current draw through each conductor of a three-phase load, you can use the formula for calculating current from power in a three-phase system: \[ I = \frac{P}{\sqrt{3} \times V_{L}} \] Where: - \(P\) is the power in watts (or volt-amperes for this calculation), - \(V_{L}\) is the line-to-line voltage, - \(I\) is the current in amps. First, we need to convert the kVA to watts for the calculation: \[ 69 \, \text{kVA} = 69,000 \, \text{VA} \] Given that the panel is a 120/240-volt three-phase panel, the line-to-line voltage (\(V_L\)) in this case is 240 volts. By substituting the values into the formula, we have: \[ I = \frac{69,000 \, \text{VA}}{\sqrt{3} \times 240 \, \text{V}} \] Calculating \( \sqrt{3} \) gives approximately 1.732. Now, substituting that value into the

To determine the current draw through each conductor of a three-phase load, you can use the formula for calculating current from power in a three-phase system:

[

I = \frac{P}{\sqrt{3} \times V_{L}}

]

Where:

• (P) is the power in watts (or volt-amperes for this calculation),

• (V_{L}) is the line-to-line voltage,

• (I) is the current in amps.

First, we need to convert the kVA to watts for the calculation:

[

69 , \text{kVA} = 69,000 , \text{VA}

]

Given that the panel is a 120/240-volt three-phase panel, the line-to-line voltage ((V_L)) in this case is 240 volts. By substituting the values into the formula, we have:

[

I = \frac{69,000 , \text{VA}}{\sqrt{3} \times 240 , \text{V}}

]

Calculating ( \sqrt{3} ) gives approximately 1.732. Now, substituting that value into the