Right now I am planning an electrical conduits and wall socket that is going to be used with a welding inverter, and encountered the following problem:
- Let's assume inverter maximum consumption is 5 kVA, which is 21.7A at best (assuming
cos(phi)==1) at 230V (which we have here in Russia).
- Inverters of such power uses a standard Schuko plug.
- Wall socket for this is designed for 16A maximum.
These three points taken together sounds like a contradiction for me. Here is my thoughts on that: ok, let's assume a quality wall socket is more or less safe to use at 20-25A (actually I am not sure on how valid this assumption is, please let me know). Then, if I use 4 mm^2 copper wires, that should solve my problem. But, it seems that wall sockets designed for 16A current takes only 2.5mm^2 wires :(
Also I cannot cut a manufacturer's plug off inverter and use something designed for 32A, as this voids my warranty.