IP ratings explained: IP20, IP44 and IP67 for extension cords
What the two digits after IP mean and which rating to choose for indoor use, outdoors and on a construction site.
Why you must fully unwind a cable reel
The rating plate carries two power figures, and there is a reason for it. What happens to a coiled cable under load.
What cable cross-section does an extension cord need?
Cross-section sets the safe power limit and the voltage drop. When 1.5 mm² is enough and when you need 2.5 mm².