A separate outlet for the washing machine and the water heater at the junction of the aluminum wire with the copper one almost melted. What to do, change the wire from the shield?

In the cable, a weak voltage, the indicator is lit weakly. When the switch is turned on, there is no plus on the lamp in the hallway, but everything is fine in the kitchen. What is the reason?

Moved the outlet on the wall. I bought the same wire, increased the wire, picked up the socket in a new place, I connect the plug - the device does not work. What is the reason?

In the event of a short circuit on any group, the group and introductory automaton is triggered, i.e. the apartment is completely de-energized. Why does the introductory machine work?

If you connect 1.5 V batteries in parallel, will only their total capacity increase or also the current? In theory, the current strength in parallel connection is summed up.

In one phase, a boiler, in another water heater, in the third, kitchen equipment and lighting. In summer, heating does not work. Possible summer phase imbalance?

Is it possible to conduct an electric cable under a concrete path? I understand that there is no ban, everything is at your own risk, but is this installation option allowed?

It is necessary to make ABP from a single-phase generator using a contactor. Which one to choose if the load is 20A? You need 2 normally open contacts and 2 normally closed contacts.

I install a 4.5 kW generator for a country house. Which cable is best used to connect the generator? The distance is about 10 meters.

On one 32A machine, a 3.5 kW oven, a refrigerator and a kettle connected to an outlet hang. Is this allowed or categorically not? thank