Help with the selection of a phase monitoring relay for a three-phase network and a load of 5 kW, and you also need to select a contactor of suitable power to it.
6 meters LED strip for lighting the room is installed, contacts quickly burn out on the switch. What is the reason for the failure and what can be done?
The network is three-phase, on each phase there is an automatic machine and an RCD. I want to connect a heater (star), on it zero N is already combined. Is it possible to combine zeros emerging from an RCD?
I screwed in the LED bulbs in the hall, turn on the light, for a second they burn brightly, then fade. I screwed an incandescent bulb into one lamp - the problem was solved.
How to connect an oven if it has a three-wire cable. There is no grounding in the sockets, why connect the yellow-green wire in this case?
When checking the voltage at the outlet with a PIN, there is both phase and zero. If you plug the device into a power outlet, the phase disappears. What could be the problem and where to look for it?