**Power consumed by the lamp load in a star-connected configuration**

In a star-connected configuration, also known as a Y-connection, the three lamps are connected in a triangular pattern, with one end of each lamp connected to a common point called the neutral, and the other end connected to one of the three phases of the 3-phase supply. The lamps are rated at 100W each and the supply voltage is 220V.

To determine the power consumed by the lamp load, we need to calculate the total power consumed by all three lamps in the star configuration.

**Step 1: Calculate the power consumed by each lamp**

Given that each lamp is rated at 100W, the power consumed by each lamp can be calculated using the formula:

Power (P) = Voltage (V) x Current (I)

Since the voltage across each lamp is 220V, the current flowing through each lamp can be found using Ohm's law:

Current (I) = Voltage (V) / Resistance (R)

Assuming the resistance of each lamp is constant, we can rearrange the formula to find the resistance:

Resistance (R) = Voltage (V) / Current (I)

Substituting the values:

Resistance (R) = 220V / (220V / 100W) = 100Ω

Now we can calculate the current flowing through each lamp:

Current (I) = Voltage (V) / Resistance (R) = 220V / 100Ω = 2.2A

Using the power formula again, we can calculate the power consumed by each lamp:

Power (P) = Voltage (V) x Current (I) = 220V x 2.2A = 484W

Therefore, each lamp consumes 484W of power.

**Step 2: Calculate the total power consumed by the lamp load**

Since the three lamps are connected in a star configuration, the total power consumed by the lamp load is the sum of the power consumed by each lamp.

Total power consumed = Power (P1) + Power (P2) + Power (P3) = 484W + 484W + 484W = 1452W

Therefore, the power consumed by the lamp load in this star-connected configuration is 1452W.