Can a Differential Circuit Breaker Be Powered From Either the Top or Bottom Terminals?

Tu.
I have this question for electricians; whether the differential can be powered from any side (up and down)

Well, not too much - looking at the description, but it should work anyway. . You give the power supply from the top and the receivers from the bottom.

The direction of the current flow is not important for the correct operation of the RCD - connection from the top or the bottom. / It may only affect the speed of disconnecting from the power supply /. The apparatus can be attached at the top or at the bottom.

The differential device will work regardless of the direction of the supply, it is important not to install the switch "upside down".

marian_em wrote:

it is important not to install the switch "upside down".

And a friend can explain why?
Many times at concerts and other festivities I saw tiny switchboards for powering the square which were, for example, upside down :)

I myself am curious if it has any effect on the operation of the RCD switch, I think I will have to break some faulty and see
My opinion is that it shouldn't have an effect, but I'm not sure.

Greetings!
Philip

marian_em-wrote-

Quote:

The differential will work regardless of the direction of the power supply

-Exactly yes, but the same marian_em-wrote-

Quote:

it is important not to mount the switch "upside down"

This already clashes with what you wrote earlier. The assignment of the power cables to specific terminals of the apparatus (even / odd) does not have the slightest importance in the process of detecting the difference in currents flowing through this switch. provides a guarantee for them-and the same manufacturer on the sheet supplied with the RCD defines the method of connection ... / any-to be as universal as possible / However, for the sake of clarity of the system / diagrams / connection is used - terminals 1,3,5

There is a smile, so it was upside down -> when you turn on the wajcha, you give it down.

dj_stopa wrote:

And a friend can explain why?

Of course, any module mounted upside down is a great trap for the unaware user, who will be rummaging around the socket, contact etc ... be sure that everything is "turned off".

There is a sign -> o on the casing (maybe not all).
Rhetorical question - can N after the difference be called N (neutral).

Wirnick-

Quote:

There is a sign -> o on the casing (maybe not all).

There is a sign N on the casing. Show me the RCD where it is 0, not N / I haven't met yet /

To Akrzy74
It's not 0, it's just about (point).

geguś wrote-

Quote:

Wirnick wrote:

Rhetorical question - can N after the difference be called N (neutral).


Maybe and must. The name of the wire is closely related to the function.

I share my friend's opinion. Speaking of the N terminal on the RCD off. This track disconnects later / starts earlier / than the phase lines ... If, however, there is no N marking, then all current lines disconnect in the same way.

The theory about the functions of the N conductor is known to me.
However, there are doubts on the forum whether the N cable can be used freely (with and without a differential). My answer is also NO. Therefore, this is a rhetorical question (N after the difference is different from N).

I don't know what you mean by "arbitrarily", but the wires that will "pass" through the differential cannot be connected anywhere anymore. It is not only about the N conductor, but about all four active conductors, each differentiator simply makes a separate branch of the installation, which means that we can have several "different" N conductors at home (+ several different sets of phases ). Each connection in the installation of the cable to the differential and without the differential will do the same as the bridge on the rcd terminals, and what will work in this case is probably known:]

geguś wrote:

And what? Just enough? NO BECAUSE NO ? What also ?

My question is not even for electricians (they are to perform installations according to rules and regulations).

For developers, there is function inheritance.
The function N is inherited if and only if the differential is on. If the differential is off, N (after the differential) only has the name "N".

And as usual in these types of topics, a mess and not responding to the topic. as usual, one grabs each other's words and tries to be smarter without adding anything to the topic. Get over yourselves people! A million such topics on elce and the same thing every time. If you don't know otherwise, don't answer any more questions like this. And I advise the author to search on the forum because not long ago the same topic was exactly the same. Is this a problem from which side will you feed it? See the manual or feed in advance and after the problem. May be? I request that this topic be closed according to points 4, 8.1, 10.4, 14 of the regulations.

I have a question whether you can connect 4 differentials, i.e. a 1-phase 3-phase differential, and make it the main differential and switch off the remaining 3 single-phase differentials that are connected to the receivers through the mains sockets, connect them so that when N and PE in the mains socket are contacted, it turns off the differential of course, the one to which the socket is attached

Januszkdom.
the connection of the N and PE conductors turns off the differential.
I read the first part of the question several times and I cannot understand how the 1-phase differentials are to be connected. If you explain, we will do something better.

GBW wrote:

the connection of the N and PE conductors turns off the differential.

It causes switching off only when the circuit is loaded or the device which supplies the circuit "from the rear" is connected.

I just have 3 single-phase differentials connected to the main differential, i.e. one phase from the main differential goes to the 1st differential, the 2nd phase from the main differential goes to the 2nd differential, and the 3rd phase from the main differential goes to the 3rd differential and all three differentials are connected via the N conductor which comes from the output of the main differential.
In the system I have, I connect the L and N wires to one of the single-phase differential at the output and now, when I connect the N and PE wire, it does not crash the differential to me, and I shouldn't know, maybe I'm doing something wrong, so I'm asking for help.

It is a bit difficult to understand for what purpose you create such a circuit that the differential switches are connected in series. It should be assumed that it will be like yours. Part of the current will flow to PE and the current balance will differ from the switch tripping threshold. Each loaded circuit breaker is required to trip. I don't know what you are going to, but I would suggest giving up the three-phase circuit breaker.

Error. Differentials are not cascading. You have to change that.
In this combination, either faster will work.
The power cable of the switchgear is connected to the 3-phase and the 1-phase is connected with a bridge (there are special rails for bridging, but you can use the wire). Of course, there may be an overcurrent (main) protection in front of the differential. with circuits of other differentials. (except PE, of course)

Can I interfere?
As for differential differentials, their main task is to guard the 1st Kirchoff law in the power supply system, i.e. preferably in the switchboard first. They are to ensure that the sum of the incoming currents is equal to the sum of the outgoing currents. So, assuming a differential, we make sure that the current does not run out of the circuit, e.g. through the washing machine and mother-in-law to the ground. (It depends a lot on the mother-in-law)
So much for the theory.
Can the differentials be mounted upside down? You can only need what. Each of us is used to the fact that when the lever is up, there is electricity and when it is down, there is no current. And let it stay that way. Of course, there are cases where it cannot be otherwise, but from the mechanical and electronic point of view, it does not bother you at all.
Can the differential be connected from any side? Yes. And it will work and the response time will be correct. But as a rule of thumb, never leave the power on the knives when unplugged. It came from the old disconnectors with spring drive and three knives hammering into the sockets made of metal plates when switching on. Therefore, there are drawings on the differentials and on the pins and the side from which the knives are and the power contacts are marked.
Can I cascade the differentials? You can and sometimes you have to. But these are special cases. (Often used in computer labs) At home it doesn't make sense (in some cases in bathrooms)
If there are any ambiguities, write it. I had to pass the difference item, so I had to wear it. Anyway, I am a practicing electrician.

Dariusz Goliński.
Of course, you are right, but the topic covers at least several dozen pages. Personally, I find it unnecessary to consider special cases, e.g. connecting type AC with type S or 500mA with 30mA, because less experienced colleagues may have a problem with it, and in residential buildings they still use one type.

Dariusz Goślński - wrote-

Quote:

But as a rule of thumb, never leave the power on the knives when unplugged.

Don't write crap. What regulation or rule requires that the power to the RCD should be connected to fixed contacts? What about switches having both movable contacts? Or both stationary? Note what the manufacturer writes on the piece of paper supplied with the RCD switch - any flow direction ... As for connecting several RCDs - selective / fire / e.g. 300mA is used first, and then the 30 mA RCD is used. Only then does it make sense ...

The tension on the knives.
It's kind of like the electricians' dialect. With the current gear it is only applicable at medium to high voltage. Habits remain irrespective of the voltage.

Fellow electricians, when it comes to modular devices such as ESS and differentials, it does not matter whether the power supply is "from the top" or "from the bottom". There is no such thing as bare knives or conductive parts available to the user.

Dear colleagues, thank you for your explanation and I will probably modernize it a bit and connect it differently. Thanks again.