﻿ February 2018

## Which contactor to choose for an electric water heater

How to choose a contactor for an electric heater with a maximum power consumption of 6 kW, 220 / 380V, each heater for 2 kW, for what power and for what current?

## What to do if a 10 A circuit breaker is knocked out

I installed a 10 A machine for a dedicated line on the refrigerator. I checked by turning on the drill, everything works. From the third time, the machine began to knock out. How to fix it?

## Twilight switch with relay output on the photoresistor

How to make the lighting turn on after dark, and not when the light resistor is lit? Install a relay with normally closed contacts?

## How to assemble a vacuum cleaner after repair

I disassembled the vacuum cleaner to clean, I do not understand how to assemble the electrical circuit back. Tell me which wire to connect to, the colors are the same as in the real scheme.

## Can I replace the driver in the LED lamp?

Is it possible to put a driver from a 16 W lamp on the same 20 W, in which the driver does not work and cannot be repaired?

## Home Resistor Testing Technology

An instruction that describes how to test a resistor for operability with a multimeter. Methods for checking a resistor at home and the reasons for its failure.

## Kirchhoff's First and Second Laws - An Affordable Explanation

Kirchhoff's laws for electric circuit and magnetic circuit. What is the first and second law of Kirchhoff. Methods for calculating DC and AC circuits.

## What socket and plug should I use to connect the induction surface?

Hello! Please tell me which socket and plug to put on an induction surface with a capacity of 4600W?

## How to connect tubular LED lamps

If I connect tubular LED lamps to each other and in the event that one lamp burns out, will the network be interrupted? Is it possible to connect them with one contact?

## Is it possible to connect one phase to a three-phase electricity meter?

In SNT, we reconstructed the networks - carried out 380V, I went to 220 V for failure mat. Can I connect one phase to a three-phase meter?

## Which introductory machine to choose for SIP 4 * 50 cable

A SIP 4 * 50 cable enters the building. Which input circuit breaker should be installed to protect this cable and what real power can be expected?

## Can I connect the oven and hob to the same outlet

The kitchen has one 32A power outlet. Copper wire, cross section about 3 mm. There used to be an electric stove.Can I connect both the oven and hob to it?

## Do I need to connect a dishwasher separately through an RCD?

Please tell me, is it necessary to connect the dishwasher to a separate group with an RCD 10 mA or can it be combined with an electric grinder for the kitchen sink?

## How much power is allocated for an apartment with a gas stove

Tell me, please, how much is the standard allocated power for an apartment with a gas stove?

## Why does the LED chandelier blink when turned on (main circuit)?

There is an LED chandelier, when you turn on the main lighting circuit, it starts to flicker. An additional circuit that turns on the backlight works fine.

## Is it possible to replace the power plug of 2.5 A with 6-10A?

The leg on the power plug (250V 2.5 A) broke. There is another wire plug on it (250V 6-10A). What is the difference and can it be put in place of a broken one?

## Ohm's law in plain language

Ohm's law for a section of a chain and a complete chain, in differential and integral form. How easy it is to remember Ohm's Law and where it applies. Formulas for calculating the chain.

## What is the allocated power of electricity and how to increase it

The allocated power of electricity for an apartment and a house in accordance with established standards. How to increase electric power capacity for private and legal entities.

## The light disappeared after the light bulb burst in the office

A fluorescent lamp burst, and at that moment all the lamps in the office stopped working! What could it be?

## Why is there a hole on the chandelier through which wires are visible?

Please tell me there are holes on the chandelier, wires stick out, is it a marriage or should it be so, is it not safe? What is the hole in the chandelier for?

## Why is the chandelier control unit humming?

Why is the Digital Remote Control Switch droning like a transformer? What reasons could there be? Advise what can be done to eliminate the buzz.

## What is touch voltage and what determines its magnitude

What is touch voltage and how dangerous is it. Methods for calculating and measuring touch voltage. Norms that should not be exceeded.

## Why appliances in the apartment are shocking

In the apartment, from all the appliances, it began to shock. Weak discharge, similar to static electricity. Why are electrical appliances shocking and what to do in this case?

## Is it possible to use a wire with a cross section of 0.75 mm.sq. for connecting spotlights?

Is 0.75 mm2 square wire enough? for connecting point LED energy-saving lamps (ceiling spotlights)?

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