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How Many Amps is 7000 Watts?

Written by Edwin Jones / Fact checked by Andrew Wright

how many amps is 7000 watts

If you want to know how many amps is 7000 watts in a common 120V setup, then the quick answer is 58.3 amps. That doesn’t account for the power factor and other voltages, though.

Read on for the full picture, so you can know once and for all how to convert amps to watts and vice versa.

Calculating Amps From 7,000 Watts

The most straightforward way to calculate amps from an electrical power rating in watts is to use the formula:

\[\text{Amps} = \frac{\text{Watts}}{\text{Volts}}\]

You simply divide the watts by the voltage to get the current draw in amps. The voltage affects the calculation, so we’ll look at a few different scenarios:

1. DC Circuits

Let’s say, you have a 120-volt DC circuit. In this case, we don’t need to considerHow Many Amps is 7000 Watts – Galvin the power factor, and the conversion is as follows:

\[\frac{7000 \text{ watts}}{120 \text{ volts}} = 58.3 \text{ amps}\]

Here are other examples using different voltages.

Voltage Amps = 7000W / Volts
12V 7000 / 12 = 583A
24V 7000 / 24 = 292A
48V 7000 / 48 = 146A

2. AC Circuits

The more common single-phase AC circuits need to account for the power factor (PF), so we arrive at the following formula instead:

\[\text{Amps} = \frac{\text{Watts}}{\text{Volts} \times \text{Power Factor}}\]

Assuming PF = 0.9, then at 220V:

\[\frac{7000 \text{ watts}}{220 \text{ volts} \times 0.9} = 35.4 \text{ amps}\]

In real-world terms, this could mean you have a 220V single-phase AC 7000-watt generator with 0.9 PF. That means it will draw around 35.4 amps of current.

Here is the amp chart based on various voltages, assuming the power factor is set at 1:

Voltage Amps = 7000W / (Volts x 1)
120V 7000 / 120 = 58.3A
208V              7000 / 208 = 33.65A
220V 7000 / 220 = 31.8A
230V               7000 / 230 = 30.43A
240V 7000 / 240 = 29.2A
277V 7000 / 277 = 25.27A
347V 7000 / 347 = 20.17A
480V  7000 / 480 = 14.58A
600V 7000 / 600 = 11.67A

3. Three-Phase AC Circuits

For three-phase AC circuits, I use line-to-line or line-to-neutral voltage and account for the power factor.

For example, with 480V of line-to-line voltage and a power factor of 1:

\[\text{Amps} = \frac{7000 \text{W}}{480 \text{V} \times 1 \times \sqrt{3}} = 8.42\text{A}\]

If it’s a 277V line-to-neutral voltage and a PF of 1, then we get:

\[\text{Amps} = \frac{7000\text{W}}{277\text{V} \times 1 \times 3} = 8.42\text{A}\]

In the end, you wouldn’t have to do any of these manually with a watts to amps calculator, but I understand that most of those tools don’t always include the variables mentioned above.


How many amps is 7000 watts? While a quick answer might tell you 7000 watts equals 58.3 amps in a 120V setup, there’s often more to it.

This article delved into the nuances, exploring how voltage, power factor, and circuit types play crucial roles in converting amps to watts and vice versa. We saw the math for DC and AC circuits, both single-phase and three-phase, providing a clear understanding of the variables involved.

By learning these principles, you’re not just equipped to answer a specific question; you’ve gained the ability to confidently perform any watts-to-amps conversion, regardless of the voltage or circuit type.

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