Dimensioning Connection Cables for Electric Motors
The question “which cable cross-section do I require in order to connect my electric motor?” often arises.
To simplify the determination process, we have expanded the “Online Calculator” section for you with
the formulas listed below.
Calculation: Cable for DC Motors: A = (2 x I x L) / (K x Δv x V)
Calculation: Cable for Single-Phase Motors: A = (2 x I x L x cosφ) / (K x Δv x V)
Calculation: Cable for Three-Phase Motors: A = (√3 x I x L x cosφ) / (K x Δv x V)
Please round up the cross-section values provided by the online calculator to the next greater value.
