Which thickness CY cable do I need for 1.5kW spindle?

[paulus.v]

I call it lamp wire because the conductor is as thin as it is for lamps. The fact that it is shielded is a different matter. I chose 1.5mm2 for the power and 0.75mm2 for the control and low voltage wires. Admittedly, it was not that easy to fit the 1.5mm2 into the plug, but it is just a one time work, so once it is done in one end, everything is much better and easier. Crimping is simple and no bother at all. If the wires are too thin crimping cables shoes becomes insecure and problematic.

Do you have a hair dryer at hand? Check the cable and power. Mine has 1700W and a 2x0.75mm2 cable. And is german made.


Now regarding the question in this thread, I would never use a 0.75mm2 "normal" stranded cable in a CNC machine. Since all the cross-sections are composed of thin wires with the same diameter, a larger cable will last longer. If/when half the wires of the 0.75mm2 conductor (only 10-12 of them) will be broken, probably the rest will blow. For a 1.5mm2 cable, three times the number of wires needs to be broken to come to the same situation.

Using special flexible fine stranded cables, even 3x0.5mm2 will be enough for a 3 phase 1.5kw spindle on a short distance

Here I attach some more charts...