I turn on the charging-starting device to charge the car battery, the current scale on the ammeter does not show. Just standing at zero. What is the reason?
When installing wiring in the wards and rooms of the hospital, the contractor uses the connection of outlets with a cable. Are such connections allowed in medical facilities?
I checked the sockets with a tester. In one group, at any position of the tester, it displays "phase and zero are mixed up." What could be the problem and how to solve it?
What is the maximum current protection, what is its principle of operation and purpose. Types and schemes of maximum current protection (MTZ). Unlike current cutoff.
Will forced locking of the control lever in the “On” position affect the operation of the circuit breaker in the event of an emergency in the network?
The microwave does not heat up, I try to check the magnetron, it shows 0 at the magnetron outputs in the diode ringing mode. It shows 1 on the case in the ringing mode.