Additional switch and bulb

Additional switch and bulb

There is an operating switch and a light bulb. It is necessary to connect another switch and a light bulb to these wires. Can I connect to two existing wires?

4 wires protrude from the switch

4 wires protrude from the switch

I decided to remove two single-key switches and put one two-key. 4 wires protrude from one switch. One phase, 2 extra. What to do with them?

Connecting a three-phase oven to the mains

Connecting a three-phase oven to the mains

How can I connect a three-phase oven to the network? There is an introductory 3-f. 25A circuit breaker, bipolar RCDs of 25A each are installed to protect each individual phase.

Voltage drops - what to do?

Voltage drops - what to do?

Power surges in the private sector, at night and in the morning, reaches 280 V, and in the evening up to 140-150 V. How to protect yourself from changes in the private sector?

How to make grounding in Khrushchev?

How to make grounding in Khrushchev?

Is it possible to attach the earth to zero in the shield? What do you recommend for the organization of grounding of the Khrushchev? Will an RCD at the entrance help in this situation?

TN-S Grounding System Overview

TN-S Grounding System Overview

Detailed description of the TN-S grounding system. Advantages and disadvantages of TN-S in comparison with other options for organizing the grounding circuit.

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