﻿ May, 2019 - Part 3

## How to connect logos on the door to the car wiring?

I bought logos on the car door and a 12 / 24V converter, 3W lamp power. The problem is that I cannot connect them. How to do it right?

## How to determine motor power with and without a tag - an overview of the techniques

How to find out the power of an electric motor without a tag by shaft diameter, idle current, size and other parameters. The determination procedure is described in the article.

## How to calculate the cable cross section 80 m long for connecting a load of 3 kW?

How to calculate the cable cross-section if the power consumption is 3 kW, and the cable length from the shield to the consumer is about 80 meters. And is the machine suitable for 25A?

## What selective RCD to put in the electrical panel after the 40A machine?

The introductory machine 3 phases at 40A costs up to the counter, but after the counter there is an RCD at 25A. Is this correct or should it correspond to the rating of the machine?

## Why does the gas generator turn off when the load is connected?

A 1.9 kW gas generator is turned off when a load is connected - a milking machine with a power of 0.55 kW. What to do and where to look for a problem?

## GOST 31195.1-2012: Connecting devices for low-voltage circuits for household and similar purposes (Part 1)

The status of GOST 31195.1-2012 for 2019. Connecting devices for low-voltage circuits for household and similar purposes. Part 1. General requirements.

## How to find the breakage point and short circuit cable in the wall?

Hello! The machine breaks out, during the diagnosis they found that 2 cores are closed. Question: are there devices to search for a damaged area?

## Why did the new kettle melt?

The new kettle began to boil, after which a sharp sound was heard and began to smell like burnt plastic. The kettle is out of order. Is it a malfunction or is the socket to blame?

## How to connect a thick cable to the machine?

How to connect a wire of large cross section, 10-16 mm² to a regular machine? Typically, the terminal blocks are designed for 25 mm², but at the same time they do not clamp the core well.

## Help me deal with the two-key light switch

Connected a motion sensor, you need to make the light directly. But the switch costs two keys and 4 wires are suitable for it. I can not figure it out, help.

## Where does the voltage between zero and ground come from 140 Volts and what to do in this case?

I live in a village, with wires to the house are 2 wires. I made grounding, and between zero and ground I got 140V. What to do and where to call?

## Connecting a twin outlet and switch after repair

Hello! A switch with a power outlet is close by. The outlet is out of order, I replaced it, but I can’t understand how to connect 1 jumper to the switch.

## How to increase the power of the network from 8 to 20 kW?

There is a cable with a cross section of 4 mm², it can withstand up to 8 kW, how can I get 20 kW without changing the voltage? What technique is needed for this?

## How to distinguish the earth from zero if they are the same color?

How to distinguish between ground and neutral conductors, if they are the same color? One option is to disable the zero in the shield on the input.

## Why is one phase out of three knocked out?

In SNT, 1 phase is constantly knocked out, neighbors have light, but we do not, while we do not connect anything powerful. What could be the reason?

## What should I do if the anti-magnetic seal on the counter works?

Does the antimagnetic seal have a lifespan? The fact is that I noticed that her field is filled, as if she worked, but did not use magnets. What to do?

## GOST 29322-2014: Standard voltages

The status of GOST 29322-2014 for 2019. Voltages are standard. You can download GOST for free on the ElecroExpert website by clicking on the link to the PDF file.

## The machine breaks out on the air line, how to find the cause?

On one of the streets a feed machine knocks out. How to find in which branch to the house a short circuit?

## Is it possible to zero the boiler?

There is no grounding in the house, I installed a boiler and I want to zero it (connect zero instead of ground). Can this be done? Is it safe?

## Why does the desk lamp power supply squeak?

When you turn on the desk lamp, a beep is heard from the power supply, after 5 minutes the lamp goes out. Switching - it works for another 5 minutes. What is the reason and what to do?

## How to repair a chandelier with a control panel if one mode does not work?

Please tell me. There is a chandelier with a remote control and two lighting modes. Diodes of the first mode stopped working. How to make the second mode immediately turn on?

## What happens if an electrician does not confirm the discharge?

Hello! What will happen if I have not confirmed my rank, what consequences await me? What to do next?

## Why is the plug on the washing machine heated?

The plug is heated on the washing machine, melted the socket, connected via an extension cord - also heated. Tell me what to do in this situation?