Power = Voltage x Current (Ohm's Law)
or
Current = Power / Voltage
Current = 100 Watts / 120 Volts (nominal US standard)
Current = 0.83 Amps
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To find the amperage of a device, you can use the formula: Amperage (A) = Wattage (W) / Voltage (V). Assuming the floodlight operates at a standard voltage of 120V, you can calculate the amperage by dividing 300 watts by 120 volts. This would result in an amperage of 2.5A.
From halogen to LED you can divide by 4 to find the equivalent. Therefore an 80 watt LED would do the job.
480 lumens may not be sufficient for a flood light, as flood lights are typically used for wide area illumination and require higher lumen output. Consider a flood light with a higher lumen rating for better coverage and brightness.
A 230 watt linear halogen lamp should be replaced by a 230 watt linear halogen lamp if the same brightness is required.
Depending on the efficiency of the flood lights, you should be able to safely run one 500 watt flood light on a 13 amp plug. Keep in mind that it's important not to exceed the amp limit to prevent overheating and potential fire hazards.
The time it takes for water to evaporate under a 75 watt light bulb can vary depending on factors such as the amount of water, humidity levels, and distance from the light bulb. Typically, it may take a few hours to a day for a small amount of water to evaporate under a 75 watt light bulb.