PUE-7 Chapter 5.1: Electric facilities. Paragraphs 5.1.1.-5.1.38. You can download the document in PDF format on this page of the ElecroExpert website.
Simple ways to check the triac for good condition. Checking triacs and thyristors with a multimeter, a battery with a light bulb, a special tester.
We connected the unit (socket + two-gang switch). I turn on the light, the outlet does not work, when the light is off, the outlet works. What is the reason?
Hello! What is better to replace the batch switch in the input shield (attached photo)? To the machine? How to choose the right value?
In the radio-controlled machine is the internal combustion engine. How to replace it with an electric motor? Tell me what you need to buy.
A single-phase asynchronous motor has two windings starting (auxiliary) and working. The resistance of which winding will be greater and by how many times?
The device, the principle of operation and the purpose of the diode bridge are examined in detail. Characteristics of this element and rectifier circuit. How to solder and connect a diode bridge.
PUE-7 Chapter 4.4: Battery Packs. Paragraphs 4.4.1.-4.4.46. You can download the document in PDF format on this page.
PUE-7 Chapter 4.3 (p. 4.3.1.-4.3.53.) Converter substations and installations. Download the PDF document on the ElecroExpert website.
PUE-7 Chapter 4.2. Switchgears and substations with voltages above 1 kV. Clauses 4.2.1.-4.2.236. Download the PDF document.
Tell me, what does it mean when they say that the indicator does not light up at zero because there is no potential on it, what kind of potential ??
I bought an ultraviolet lamp, but I don’t know how to connect it. Cap G23, I attach the photo of the lamp. Help me choose a throttle for her.
On the seven-segment indicator of the hob does not show part of the figure, what could be the reason? Is it possible to disassemble and repair?
We installed a new counter and ran into a problem. They used to pay 200-400, but now 700. Shakes twice as much, how is this possible and what to do?
Hello! A copper cable was laid in the entrance, and aluminum wiring in the apartments. Which machines should now be installed in the entry shield?
People confuse devices such as batch and circuit breakers. We will figure out what is the difference between a bag and a machine, comparing their purpose and features.
Good day, help me choose a motion sensor to work in any light, including the light in the room, when entering it from different sides.
There are LED bulbs in the room and they often blink in the evening. An electrician advised replacing them with fluorescent ones. Will the replacement solve my problem or is there still a way out?
PUE 7th edition, Section 4, Chapter 4.1 - Switchgears with voltage up to 1 kV AC and up to 1.5 kV DC. PDF document.
The hood for manicure in all rooms works fine, but only when turned on in the kitchen, it beats an electric shock. There is no grounding in the apartment, is this normal?
He laid the wiring, in the switchboard turned out 7 group machines. Please tell me, is it enough to put 1 total RCD or do I need a few pieces in groups?
I need to turn on the light in the hallway and in the kitchen with one two-key switch, I can’t determine which wires where to connect. Tell me how to do it right?
Hello! Tell me how to connect and which electronic ballasts to choose for a Philips 8-watt fluorescent UV lamp?
Hello! A hood for manicure when turned on in the kitchen beats an electric shock, a refrigerator too. In outlets in other rooms, the exhaust hood does not beat. What is the problem?