kW to Amps Calculator
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kW to Amps Calculator
Need to figure out how much current your equipment will draw based on its power rating? Our kW to Amps Calculator helps you convert real power (kilowatts) into estimated current (amps), using your system’s voltage, phase type, and power factor.
This tool is ideal for checking whether your electrical supply or generator can handle the load before installation or upgrade.
kW to Amps Calculator
How This kW to Amps Calculator Works
This calculator uses standard electrical formulas to convert kilowatts (kW) into amps, depending on your system configuration.
For single-phase systems:
Amps = (kW × 1000) ÷ (Volts × Power Factor)
For three-phase systems:
Amps = (kW × 1000) ÷ (√3 × Volts × Power Factor)
- kW is the real usable power
- Volts is your system voltage (230V or 400V are typical in the UK)
- Power Factor is optional. The calculator defaults to 0.8, which reflects the rated power factor most diesel and gas generators are designed around.
This gives you a quick estimate of current draw, which is useful when planning installations, checking load capacity, or reviewing equipment specs.
Make Sure Your Power Setup Matches Your Load
You now know the amount of current your equipment will draw. The next step is to ensure that your generator, cabling, and supply can handle that load with confidence.
At Canning Generator Solutions, we help UK businesses design and install power systems that are built to specification and ready for real-world conditions.
Contact us today to speak with our team or request a tailored quote.
WHY CHOOSE US?
Why Choose Canning Generator Solutions?
In short, we get the job done. When power generation and energy management are neglected, the consequences can be disastrous. It’s critical to have a team that responds proactively to potential issues, and our personal, tight-knit values means you can expect exactly that.
Tailored Services
Every client and project is different, so we prioritise clear communication to develop a rich understanding of each client’s needs.
Responsive
When our services are needed, every second counts. That’s why we guarantee a four-hour response to our clients nationwide, bolstered by our dedicated team of service engineers operating 24/7.
Proactive
While our industry often reacts to emergencies, our ethos is to anticipate and mitigate issues before they escalate. We like to get involved early to better plan and optimise your power.
Honest
The relationships we build with clients are hugely important to us, so we operate with transparency, earning your trust through fair pricing and honest advice.
Reliable
With extensive experience in the commercial power sector, our dedicated team of engineers always find the right solution.
Family Values
It’s not just about business, we genuinely care about our clients and maintain close, respectful relationships with them. Your power really is our priority.
FAQs
Frequently Asked Questions
What does this calculator show?
It estimates how many amps your equipment will draw based on its power rating, voltage, and power factor. This helps you plan for safe and efficient electrical installation.
Do I need to enter a power factor?
Not always. If you’re unsure, you can leave it blank. The calculator will use a default of 0.8, which is fine for resistive loads like heating or lighting.
If you’re working with motors or compressors, a typical power factor is between 0.8 and 0.95.
What voltage should I enter for UK systems?
- Use 230V for single-phase equipment
- Use 400V for most three-phase commercial systems
If you are not sure, our team can help you confirm what’s correct for your site.
Can this be used for generator planning?
Yes, but only as an estimate. Generator selection depends on more than just current draw. Factors like startup loads, duty cycles, and load diversity also matter.
For accurate recommendations, we suggest reaching out for a site review.
Is this calculator suitable for both single and three-phase systems?
Yes. Please select the correct option from the dropdown before proceeding with the calculation. The tool will automatically apply the appropriate formula.
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