If a dimmer rack is running on a steady 230 VAC supply and averaging about 98 amps, what is the expected amperage draw if line voltage drops to 211 VAC?

When a dimmer rack operates at a specific voltage and current, a change in the voltage supply will affect the current draw due to the principles of electrical circuits, particularly Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R) (I = V/R).

In this situation, the dimmer rack is initially consuming about 98 amps on a supply of 230 VAC. When the line voltage drops to 211 VAC, the current draw will adjust accordingly based on the decreased voltage.

The relationship between power (P), voltage (V), and current (I) can also be expressed as P = V x I. Assuming the overall power consumption of the dimmer rack remains constant during this voltage drop, we can calculate the new amperage:

1. Calculate the total power at the original voltage:

P = 230 VAC * 98 A = 22,540 VA (volts amperes).

2. With the new voltage at 211 VAC, the current can be recalculated using the same power value:

I = P / V

I = 22,540 VA / 211 VAC ≈ 106.72 A, which we can round