Free electrical calculators
Quick help to choose the right wire and MCB, or to work out metal weight. Then send your list and we will quote.
Wire size calculator
Load current: 14.5 A (3.00 kW)
Suggested copper wire: 4 sq mm (voltage drop about 2.1%)
Indicative only. Uses a 25% safety margin and a 3% voltage drop limit for PVC copper wire in conduit. Final selection must be confirmed by a qualified electrician.
MCB rating calculator
Load current: 14.5 A
Suggested MCB: 20 A (single pole)
Indicative only. Motors and heavy loads need a different curve (C or D). The wire behind the MCB must suit the same current.
Metal weight calculator
Weight: 2.66 kg
Theoretical weight from standard density. Real weight can differ slightly.
Ready with your list? Upload your BoQ or send an enquiry.