Why is there voltage on the ground in the outlet?
In two rooms in all outlets, the voltage at the Earth contact is the same as in the phase. Checked with an indicator screwdriver and a multimeter. What is the reason?
What is the electrification of bodies and how does it happen?
What is the electrification of bodies, what are the conditions for the occurrence of this phenomenon. The use of electrification in everyday life and technology. Ways of transferring charges.
GOST 52735-2007: Short circuits in electrical installations. Calculation methods in electrical installations of alternating current voltage above 1 kV.
GOST 52735-2007 status for 2018. Short circuits in electrical installations. Calculation of short-circuit currents in networks above 1 kV. Download the document in PDF format.
GOST 14254-96 (IEC 529-89): Degrees of protection provided by shells (IP code).
Status GOST 14254-96 (IEC 529-89) for 2018, which replaced this document. Download GOST in PDF. Degrees of protection provided by shells (IP code).
GOST 26522-85: Short circuits in electrical installations. Terms and Definitions.
GOST 26522-85 status for 2018. From our site you can download this GOST in PDF format. Short circuits in electrical installations. Terms and Definitions.
Why does the LED spotlight light when the switch is off?
When the 30 watt floodlight is on, the 100 watt floodlight that is off continues to glow dimly. What is the reason? Can they be divided into separate switches?
Why do not the sockets work after the machine has worked?
Two sockets were cut off when both the air conditioner and the hair dryer worked. The lever was lowered in the shield, I raised it - nothing has changed. What is the cause of the breakdown?
What threatens to exceed the maximum power of electricity
What may be connected with the excess of the maximum power of electricity by the consumer, what are the consequences for this. Grounds for lifting the restriction.
How to add electric lock and remote control to the reversible motor control circuit?
How to add electric lock and remote control to the reversible motor control circuit?
Can the oven and hob be switched off by separate machines?
The hob and oven are connected to a block that is connected to the cable. But disconnect two different automatic machines from the hob and oven, is this possible?
Is it possible to lead the SIP wire into the house to the meter?
Hello. Please tell me, is it possible to lead a self-supporting insulated wire into a private wooden house directly from the pole to the electrical panel in the house?
Is it possible to lay the input cable in the box along the wall of the apartment to the counter?
Can the input cable from the floor board be laid under the plaster or in the box along the wall of the apartment (5m) to the meter? PUE and SP this moment is not regulated.
What kind of load does the outlet withstand?
There is a double outlet from which heaters need to be powered through extension cords. What is the total power consumption of electrical appliances for each outlet?
How to connect a time relay through a voltage relay?
Hello. Tell me how to connect a Feron TM41 time relay via a Barrier-41 voltage relay? Need a wiring diagram for these relays.
What is the cause of the fire in the landing?
The apartment burned down, a fire in the stairwell, fire wiring from a short circuit. What could have caused a wiring fire?
Why does the passage switch not work correctly?
If you turn on the light from the first pass-through switch, turn it off from the second, then it does not work again from the first. What is the reason and what can be done?
Why doesn't the UV lamp for nails work?
The ultraviolet lamp for manicure does not work. When plugged in, it lights up for a second and goes out. Inside, the whole. What to do, what is the problem?
Which power supply to choose for 7 coolers for cooling equipment?
I connected 7 coolers to the power supply (12v 800ma, 50Hz), and they barely spin. What power supply do I need for them to spin at full power?
On both wires of the switch shows the phase, the lamp does not turn off
The lamp has stopped turning off - it is constantly on, does not respond to the switch. There was a phase on both wires, and a phase and zero on the lamp. What to do?
How to compensate for a short power outage?
How to compensate for the short-term (2 millisecond) loss of electricity on the stabilizer, will a capacitor with parameters of 300 V and 1500 microfarads help?
How to connect a soft start to the electric saw?
I bought a soft start KRD-710 for the electric saw. There are 3 wires in it. Tell me, in a simple way, where to connect the wire to make a smooth start of the electric saw
How to connect a new electric stove if the old one was connected from two phases?
I bought a stove, I want to connect it from the old one. The old oven is connected with 2 phases, for some reason, the new oven does not have such a method on the connection diagram. How to connect?
How is a two-legged transistor possible?
How is a two-legged transistor possible? There are two holes on the board for the transistor, not 3. Is this possible?
Incorrect fan connection with timer
Incorrectly connected fan with a timer in the bathroom. The switch costs two keys, and connected the light and fan to one key. Can this be fixed?
