# Quick Answer: How do you know the wattage of a light bulb?

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## How do you calculate watts?

AC three phase amps to watts calculation formula

1. P(W) = √3 × PF × I(A) × VL-L(V) So watts are equal to square root of 3 times power factor PF times amps times volts:
2. watt = √3 × PF × amp × volt. or.
3. W = √3 × PF × A × V. Example. …
4. P = √3 × 0.8 × 3A × 110V = 457W. Watts calculation with line to neutral voltage.

## Can I put a 100W LED bulb in a 60w?

However, LED’s do not emit dangerous levels of heat. Thus, if your fixture says “not to exceed 60-Watts” but you want to use a 100-Watt equivalent LED bulb, this would be safe to do so. … For a 60-Watt fixture, you could use a 100W, 125W, or even 150W LED equivalent because they all consume under 60-Watts!

## WHAT LED bulb equals 60 watts?

A 60-watt incandescent light bulb can be replaced with a 10-watt LED.

## Is 40w brighter than 60w?

40-watt bulb produces 450 lumens of light. 60-watt bulb produces 800 lumens of light (most widely used in households) 75-watt bulb produces 1,100 lumens of light.

## How do I know what wattage my outlet is?

If you want to know how many watts you can safely draw from an outlet, multiply the voltage and amperage ratings for that circuit. In the U.S., most circuits are rated for 120 volts and either 15 or 20 amps. Therefore, the safe max wattage for most standard outlets is either 1800 W or 2400 W.

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## How do I know what wattage my adapter is?

Wattage is the overall measurement of power that flows through your charger, so a higher cell phone charger wattage means that your device will charge faster. If you’re shopping for a new charger and the wattage isn’t listed, you can also calculate it with the formula: watts = volts x amps.