I greet you on your channel. Today I'll tell you about the top 8 mistakes that sometimes make for electrical work in the office.
For consideration we take office on 20 square meters. meters consisting of 3 rooms, which is designed for programmers working in which I had to work.
1. The wires in the open box
Yes. Error sounds amazing, but sometimes make it too. The wires are arranged in the open outside the box. At least it should be closed. A best practice, if possible, all the wires better zashtrobirovat the wall. It will look much better and more aesthetic.
2. The use of non-crimped wires panel
I have yet to encounter such situations when some electrician uses non-crimped wire in the panel. Rude and haphazardly cleaned wire and connect them to the machines. Prepared in poor contact hole klemnom breaker. Wire stagger slightly pursed. And all this is fraught with arcing contacts and subsequent ignition.
Of course, the better to crimp wire using suitable terminals.
3. Failure to comply with the selectivity and denominations machines
Often non-compliant machines and selectivity in the panel. EXAMPLE error: automatic take introductory C25 (three-phase), and then 3 groups of wires also give 3 C25 machine (which is fed, for example, socket). In the event of a short circuit cut down like the opening machine and the machine 3. And it does not suit us, because it should only cut down machines that feed the sockets, but not the overall machine that feeds and other office support systems.
Example 3 In this machine, which is fed outlet is better able to choose as the opening C16 at C25.
Burden on all 3 phases to better plan the uniform!
4. Forget to do short-circuit test
The work carried out, acts signed and left. And how do you make a short circuit test? And to do this is often overlooked as electricians and customers. But, if you make a short-circuit test, the situation described in the error N3 will be visible at a glance. And measures will be taken to correct it.
5. Connect more than 2 fan coils in the machine 1
Situation: in the office 3 bedrooms and 3 Fan coil (heating and air conditioning) for each room. What do you think - how many machines they are connected? Yes, they are connected to one machine. And to do it wrong! Correctly connect each fan coil on a separate machine. It would be safe and secure.
6. Grounding and zero tire hang out and roll in plate
In this case, the zero tire can touch panel and thereby a zero may be connected to ground. And if, for example, the staircase stands RCD, its sure to turn off in this case.
7. The use of stranded wires and monozhilnogo in one slot machine
It is also forbidden to do. Application and monozhilnogo multifilamentary wires in one connector machine fraught bad contact and sparking followed and heating.
8. Using a jumper between guns of small section
Too common mistake. When you need a jumper in the 4 or 6 squares, electricians put the jumper in the 2.5 square. This jumper can be heated with all the ensuing consequences. And generally it is better to use specially adapted therefor a connecting bus (a comb).