﻿ October, 2018 - Part 3

## How to calculate power consumption in a coffee shop

I want to rent a room for a coffee shop, the landlord said that 11 kW of power was installed. How to calculate how much power I need? The room is 40 sq.m.

## Why does it shock when you touch a metal workbench?

In the workshop at the cottage, a metal table-workbench 3m x 0.6m. The capacitor was soldering, his foot touched the workbench leg - it was shocked! What is the reason?

## Help me choose a magnetic starter for a three-phase motor

You need to connect the engine to 220V. Help me choose a magnetic starter, engine parameters: (220 / 380v), 50hz, (2.9 / 1.7A), (0.55Kw ... KPD 70.5), 1370 rpm.

## Why is the lamp shocking when the light switch is off?

The switch was turned off, but the current pulled from the lamp. If you screw in the second lamp, it goes out and that's it when the switch is off. Lamp with 2 lamps.

## Is it possible to put an RCD on 50A, if the input circuit breaker is also on 50A?

Introductory machine 50A, and RCDs for a group of machines 50A and 30 milliamps, is this permissible? Is it possible to put an RCD of the same value as the introductory machine?

## Will the old wiring in the apartment withstand the electric stove?

I have such a question, an apartment in an old house and poor wiring, we are doing repairs and I want to install an electric stove, can it withstand it, will there be a fire?

## Is it possible to connect a three-phase noise suppression filter to 220V?

There is a network suppression filter FP-11, but its operating voltage is 380, three phases. Can it be connected to 220 network and will it fulfill its functions?

## What is the name of the copper cable in rubber insulation?

Please tell me the brand of cable. Insulation - 2 layers of rubber, core - copper. The cable is shown in the photo, its name is of interest.

## How to connect two wires to one machine?

Bought a two-pole machine. I found that it has one terminal strip, not a double one. Tell me, is it possible to have two wires in one terminal block on such an automatic machine?

## Which modular contactor to choose for a 2 kW electric boiler?

Installed mini heating of 3 bimetal radiators in 10 sections. I want to automate the operation of a 2 kW boiler. Which modular contactor to choose?

## Is it possible to connect an RCD or a difavtomat without grounding?

I want to connect the boiler to electricity. The apartment includes phase and zero, there is no land. Can I connect a difavtomat or RCD without land in another way?

## Why does a working chandelier not work when connected to the ceiling?

The old chandelier was removed, the new chandelier refused to work after installation.The new chandelier is in good working order, it has been checked from the outlet. What is the cause of the breakdown?

## Why breaks the phase on the metal parts of the garage?

In the garage, a milestone is present on metal objects. When measured from the counter "0" to any piece of iron in the wall, it shows 220V. What is the reason and what to do?

## Oven voltage

Why is an electric oven shocking? If you stand on the floor, the indicator on the oven lights up when touched. And if you stand on a chair, it’s off.

## Wiring in a disassembled chopper CMI 2500

I got a disassembled chopper, the wiring inside is disconnected. The question is, is it possible to recommend using an attached photo how to connect open wires?

## Why does the machine knock out when you turn on the electric oven?

Hello! I wanted to ask why the machine is cut down when you turn on the electric stove oven? The lights turn off in the entire apartment. What to do? Thank.

## What is the name of the cable in the photo?

Good afternoon! Please tell me what is the name of the cable in the photo? Help determine the brand of cable from the photo.

## How to connect wires through the WAGO terminal block?

It is necessary to connect the aluminum wire and the copper one. There is a Wago terminal. I don’t get it, where to put it? There must be a separate terminal for the phase, but for zero its own?

## Why are the plugs on the electric meter melted?

The plastic melted on the cork, where the contact is. An electrician advised changing traffic jams to more powerful ones. What is the cause of reflow and is it dangerous?

## Is it possible to connect the Armstrong lamp through a plug with a wire?

How to safely connect Armstrong LED ceiling light to a wire with a 220 plug? Is it necessary to connect grounding and is it even possible to do this?

## If the electricity meter burns, will the electricity be cut off?

A three-phase 10-20 amp counter without current transformers is installed. If the counter burns out, will the voltage on the consumer disappear?

## Why does the electricity consumption at the two meters not coincide?

The phase 3 meter is located both on the yacht and on the shore column. Consumption for them does not coincide, on the coastal 30 kW more. What is the reason?

## Is it possible to install a switch without a neutral wire

Is it possible to install a two-button switch with 4 wires instead of a conventional two-button switch without a neutral wire? There is no neutral wire in the wiring.

## An approximate calculation of the operating time of the gas boiler from the battery

How to calculate the operating time of a gas boiler with an electric power of 130 W from a battery of 60 a / h 12V through a 220/12 inverter?