Test of circuit breakers with a current of 1.45 of the nominal. Who is better?

All of us, when buying any product, are interested in how real parameters correspond to the declared characteristics.
This is especially important when we choose devices designed to protect our electrical networks.

Energy saving device. Myth or reality?

To be honest, after such information processing, the hand reached for the phone to place an order.
After all, the number of devices is limited! Suddenly I can't! Somewhere in the back of my mind, I heard the laughter of my TOE teacher. Thirst for freebies almost won over common sense. Moving away from euphoria, I began to analyze the noodles that my uncle had just hung on me from the TV screen:

How to connect wires. Unusual way

This method of connecting wires will be of interest to both amateurs and professionals. In terms of the quality of the connection, it is similar to the connection with a sleeve. I have been using it for over 15 years. During this time - no complaints from customers.

How to charge a battery without a charger. Two schemes.

If we take a light bulb with a power of 100 W and turn it on without a battery, we will record a current of 0.45A. In a series circuit with a battery, the current will not exceed this value. The internal resistance of the battery is less than 1 ohm. Therefore, we can afford to neglect this value.

How to increase chimney draft. An unusual invention.

The effect of increasing the draft of the chimney was achieved by changing the direction of the wind from horizontal to vertical. The story ended with someone being awarded something for this “ratsuha” (who doesn’t know, that’s what life hacks were called in the USSR :).

How to unscrew a stuck self-tapping screw or screw

Probably, each of us had to unscrew a screw that does not get out. As a rule, the cause of this phenomenon is rust that has eaten the slot on the head. Our unsuccessful attempts to unscrew such a screw lead to the complete eating of the slot.

How to cut glass without a glass cutter.

If you need to cut glass, and there was no factory glass cutter at hand, or the quality of a modern tool made in one large eastern country does not suit you, you can adopt one of the glass cutting technologies without a glass cutter.
I will immediately announce all the methods under consideration ...

Heat-shrink tubing. Installation subtleties.

It would seem ... heat shrink tubing for insulating cable / wire connections is no longer something unusual.
Someone who, and electricians must definitely know how to use it. Nevertheless, the other day I watched the work of the RES brigade and realized: “The instructions are not for our brother.” They screwed up like this...

How to securely fix the dowel in a loose wall

I fixed it somehow on the wall, TV mount. The wall was found to be very loose and the dowels did not want to burst in the drilled hole. With each new attempt, I increased either the length of the dowel or its diameter. Result = 0. When screwing in the self-tapping screw, the dowel turned. What kind of reliability can we talk about here?

How builders can take revenge on the customer for non-payment of money

Often, conflicts arise between builders and employers over payment for the amount of work performed. Who is right and who is wrong is known only to them. And now we will consider the most popular ways of securing (revenge) that builders use.