Load sizing tool

Find Your Perfect KVA Rating

Undersizing causes nuisance tripping and downtime.
Oversizing wastes capital and energy costs.
Use this tool to get a precise recommendation — then click straight to the right product.

↯ Sizing calculator

Input method

Connected load (kW or HP)

Power factor (cos φ) – advanced Default 0.8 for mixed industrial loads. Adjust if you know your exact PF.

Equipment list

Equipment name	Rating	Unit	Qty	Actions
Total: 0.00 kW

Power factor (cos φ) – advanced Default 0.8 for mixed industrial loads. Adjust if you know your exact PF.

Safety margin (headroom) Adds extra capacity for motor starting currents and future expansion.

Supply phase

Recommended KVA

Total connected load -- kW

With margin (20%) -- KVA

Standard KVA rating -- KVA

How the math works

From load to KVA rating

The calculator converts your connected load (in kW or HP) to KVA using the power factor: KVA = kW / power factor. For motor loads, we use a typical power factor of 0.8 — but you can override it if you know your plant's exact PF.

Why add headroom? Motors draw 5–7× their running current during start‑up. The safety margin (15–25%) ensures your stabilizer or transformer can handle these surges without tripping. It also accommodates future load additions.

Finally, we round up to the nearest standard KVA rating we offer (10, 15, 20, 30, 50, 60, 75, 100, 125, 150, 200 KVA). This ensures you always have a ready‑to‑order product.

Need a second opinion?

Our engineers will size it for you — free.

If you're not sure about power factor, harmonic content, or future expansion, we'll analyse your actual load profile and recommend the perfect solution.

Request a free consultation