Tools
Free electrical calculators
Convert between kVA, amps, kW and fault current, check voltage drop and estimate cable size — instant, free engineering calculators from the Emirates Panel technical team.
Request a QuoteBrowse the Store
Overview
Specify faster with the numbers that matter
Specifying electrical equipment starts with the numbers. These free Emirates Panel calculators help engineers, contractors and buyers convert between the units that come up on almost every project — kVA, amps, kW and fault current — so you can size a supply, choose a breaker’s breaking capacity, or check a cable run in seconds.
Every calculator works for both three-phase and single-phase systems and updates live as you type. They give fast, defensible first-pass figures using standard formulas; the final design should always be confirmed against the installation method, derating and the governing standard — and our team is on hand to help.
Calculators
Six tools, instant results
kVA ↔ Amps Calculator
Convert transformer kVA to full-load amps (and back).
1443.4Amps (full load)
3-phase: I = kVA×1000 ÷ (√3 × V). Sizing a project? Request a quote.
kW ↔ kVA Calculator
Convert real power (kW) to apparent power (kVA) using power factor.
888.9kVA
kVA = kW ÷ PF. A lower power factor needs a larger supply for the same real load.
Transformer Full-Load Current
Rated current on the primary or secondary of a transformer.
131.2Amps
Need protection & control gear? Browse ABB.
Fault Current (Short-Circuit)
Approximate symmetrical fault current at a transformer’s secondary.
62.8kA
Size breaking capacity (kAIC) accordingly — see our protection brands.
Cable Voltage Drop
Estimate voltage drop along a copper cable run.
1.93% drop
Copper ρ=0.0175 Ω·mm²/m. Ask us about cable.
Cable Size Estimator
Suggests a minimum copper conductor size for a load current.
95mm² (min, copper)
Indicative free-air ampacity; confirm per installation method & standard. Talk to our team.
How to use them
From a number to a specification
kVA ↔ Amps
Enter rating and line voltage to get full-load current — the starting point for conductor and breaker selection.
kW ↔ kVA
Loads are rated in kW but supplies in kVA. Divide by power factor to find the apparent power you actually need.
Full-load current
Find rated current on a transformer’s primary or secondary from its kVA and voltage to coordinate protection.
Fault current
Estimate short-circuit current from impedance — the figure that sets the breaking capacity (kAIC) of your switchgear.
Voltage drop
Check conductor losses over distance so long runs stay within limits.
Cable size
Get an indicative minimum copper size for a load current as a first-pass check.
From numbers to product
We turn the calculation into supply
A calculation is only useful if it leads to the right equipment. The full-load current you compute drives conductor and breaker selection; the fault level you estimate drives the breaking capacity of your protection; the voltage drop you check drives cable size on long runs.
Once the numbers are settled, send them to Emirates Panel and we turn them into a quotation — genuine, authorized product from ABB, TE, Lovato, Weidmüller, Alfanar and Theben, delivered with the documentation your project needs.
- Three-phase and single-phase support
- Live results as you type
- Standard formulas and material constants
- A direct path from sizing to a quotation
Why it matters
Accurate sizing protects the project
Under-sizing a supply or conductor leads to overheating, voltage problems and nuisance tripping; over-sizing wastes capital and panel space. Getting the fault level right is just as important — an under-rated breaker is a safety risk, while an over-rated one adds needless cost. These calculators give defensible first-pass numbers so those decisions start from fact, not guesswork.
They are used every day by consulting engineers sizing a service, contractors checking a feeder before pulling cable, and buyers sanity-checking a vendor proposal. When the numbers are settled, our team turns them into a coordinated, certified supply.
Who it is for
Built for the people who specify and build
Consulting engineers
Size services and coordinate protection quickly.
Contractors
Check feeders and cable before you pull.
Panel builders
Confirm ratings and breaking capacity.
Buyers
Sanity-check a vendor proposal in seconds.
FAQ
Frequently asked questions
How do you convert kVA to amps?
For three-phase, Amps = (kVA × 1000) ÷ (√3 × Volts); single-phase divides by Volts only.
How do you estimate fault current?
Fault current ≈ full-load current ÷ (%Z ÷ 100); it sets the breaking capacity your breakers must withstand.
How do I size a cable?
From the load current and installation method, then check ampacity, voltage drop and derating against the standard.
Are the calculators free?
Yes — free to use, built to help you specify faster.
Numbers settled? Let’s price it
Send your figures or load schedule and our team returns a coordinated, certified quotation.
Request a Quote