Evaluating Tauron G11 Contract: Is 4kW and 25A Pre-Counter Sufficient for New Apartment?

Question

Hello, I bought a flat, I replaced the electrical installation which is adapted to 3 phases with connection to an induction cooker for the future. (5 x 2.5mm? wire pulled up ;) The electrical system in the building was also replaced. I don't have an induction hob and I'm not going to...

bumble · Answer

Pre-meter protection is probably more than 4kW. I have 25A in a single-family house and the power is probably 9 or 11, I don't remember. If it's 25A you'll be fine. The test button on the RCD does not work because either l1+l2+l3+N is to be connected incorrectly, and if one phase is, for example, L1+N, or it is faulty.

kokapetyl · Answer

Are we talking about the same cable? If so, this is an error, because there is no separate circuit for the oven.

Radek_19 · Answer

Yes, it's the same wire pulled up there. But in the kitchen I have a total of 4 circuits. One bottom socket and fridge. Next Upper sockets and dishwasher, third washing machine and fourth 5x2.5mm and the oven is currently connected to it. If you connect the hob, the oven will go under one of the sockets, but I don't plan the hob in the near future, so it will stay that way for some time.

kokapetyl · Answer

And it will still be an error. Appliances that consume more power (washing machine, dishwasher, oven and hob if it is a separate appliance) are all to have a separate power circuit. In addition, there is a fridge, which should also be on a separate circuit, but for other reasons.

Pan.Kropa · Answer

Because the contractual power means that you are guaranteed power consumption up to 4 kW. But actually with 25A fuse you can draw around 5750 watts.

Anonymous · Answer

It depends on how you use the devices. If using the oven you give up washing and washing up, it will be enough without any problems. But if you want to bake something (3.6 kW) and wash, wash and iron at the same time, then 25A may not be enough.

Radek_19 · Answer

Ehch, and here I am wondering whether to change it to 3 phases for peace of mind while increasing the power.
Although I washed, washed, baked at the same time and nothing happened, so here I do not know if I did not exceed these 4kW or something is wrongly connected to this one phase on this 3-phase differential, which its test does not work.

Or maybe you know what connection power these days, i.e. 2020. is such an optimal power for an apartment in a multi-family building??

Anonymous · Answer

For most apartments, 5 or 6 kW 1 phase is sufficient. If you have a contractual power of 4 kW, the connection power is 5 kW. For this power, the pre-meter protection is 25A. These 25 A is enough in most cases. I'm also 25A. This is what my colleague wrote in the answer above. 25A is about 5 power kW . If no. has a colleague called i.e circuit breaker then, charging it with a current of, say, 28 A, it will heat up and eventually fail. It's best not to bake and wash at the same time and it will be ok.
Please use correct terminology and pay attention to the written symbols of physical units. This time I corrected[TM]

Ktoś_tam · Answer

If the pre-counter protection does not disconnect you, there is no point in pushing yourself into costs and increasing the power.
Differential text may not work because it is 3f and you only have 1f drawn. The test can work between two phases and not between L and N, check the differential diagram how the test is connected.
As for the standards, at 1f such a standard is 25A before the meter. Perhaps a few million flats, and certainly several hundred thousand flats in Poland have such protection. 25A will not disconnect at this current, 30A will also withstand the more so in an apartment where there are no continuous loads for many hours.

bumble · Answer

You can apply for an increase in power if you have a flow meter in the shower, a 7kW hob and many other crap, but in a standard apartment with gas I would give it a rest, especially since the protection is 25A. I checked because it seemed to me 9 or 11 kW at 25A in the house, but I have a contract power of 7.5 kW. Maybe it used to be calculated differently for security. Maybe they will increase your power and you will pay more and the security will stay.

bartekfigura · Answer

If the protection is 25 A and the contractual power is 4 kW, the protection should be 20 A. This is called tariff abuse and if someone is annoying, they will get attached. It's best to do this installation properly because it can't be that the RCD doesn't work. There are probably more flowers like this in this installation. Installation for checking and taking measurements. And increase the power to approximately 10-11 kW on 3 phases, which gives 3 x 20 A protection in front of the meter.

Pan.Kropa · Answer

In households, the contracted power does not affect the size of bills. I would advise such power that the protection was 3x25A. In terms of the amount, it may be a small difference.

Radek_19 · Answer

@bartekfigura but I did not set up this pre-counter protection myself and no one touched it. I have this information from Tauron's website when I log in to my account. in the collection point details tab. Power type: 1-phase Read date: 05/02/2020 zone 1: 0 Read Type: New Contractual power: 4 Pre-meter protections: 25 A Multiplicand: 1 As for my installation, I don't put my fingers there, the electrician did it, he just said that the test did not work probably because one phase and basically it was supposed to be increased to 3 phases, although at the moment I am wondering whether to increase it because if not, then these RCDs would have to be done properly somehow.

Ktoś_tam · Answer

As I wrote, the test probably does not work because the RCD is 3f and the power supply is 1f. The test is connected between terminals L1 and L2. The differential itself works otherwise, but it's still incorrect.
Regardless of whether you stay at 1f or change to 3f, I would still throw this differential and put 3x1f. The board will most likely not require an RCD. So only receivers 1f remain to be secured. At the moment you can't check whether the RCD actually works. Any leakage in the installation or receiver will shut down the electricity in the whole apartment, sometimes for many hours or days (refrigerator) until the electrician comes. With 3 RCDs, you will have no electricity in only 1/3 of the apartment. Searching for damage is now 3x harder. Failure of the N track in RCD 3f will damage many receivers.
This is roughly written why 3 RCDs 1f are better than one RCD 3f.

bumble · Answer

Nothing required. This is additional protection and applies in wet rooms. What's the meaning of that? the smallest. apart from that: The possibility of separating the circuits, but the colleague has not yet mentioned that there are RCDs with a redundant element, i.e. a built-in fuse, such two in jwdny.

Ktoś_tam · Answer

If you're talking about lighting, you're right. All general purpose sockets require an RCD. In the post above I have already written why 3x RCD 1f is better in single-phase circuits than 1x RCD 3f. The colleague, however, did not mention how much his proposal costs and how much space in the switchgear it takes up. Let a colleague give literally one example in which 1 RCD 3f is better than RCD 1f in SINGLE-PHASE CIRCUITS. There are no 3f devices in the apartment. The board does not require an RCD. RCD 3f should be considered as a malpractice and very limited functionality, no electricity in the entire apartment with any leakage. Even an efficient installation and receivers can trip an RCD. Grain to grain and several mA accumulate, especially when there are many receivers. RCD, like any apparatus, can be faulty. Does your friend know what will happen to 1f receivers if the N contact is damaged? If the author of the topic would stay with the 1f power supply, how to conduct the test? In addition, it is logistically easier to carry out a test on 1/3 of the apartment than on the entire one at the same time. The point is that someone is using the computer, someone else is watching the game and someone else is cooking and no one wants to agree to a power failure in the whole apartment at once. Then most often you forget about the test once and for all because it is annoying. With several RCDs, you can test at different times or days so that no one will feel it.

e-sparks · Answer

You repeat it like a mantra. Tell at least why the board does not require an RCD?

Ktoś_tam · Answer

PN-HD 60364

e-sparks · Answer

But you signed up .... there will be a lot to read in a week.

Anonymous · Answer

Switching to a fully electric kitchen? If so, the answer is clear. Select the connection power so that you get 3x20A protection - probably enough - or 3x25A. There should be enough for an apartment. If the cooker stays gas and you want more connected power, it can actually be hard to get more than 25A on a single phase. 25A for an apartment without an electric cooker should be enough for rational handling of high-power devices. True, but there is a solution - you can always buy an electric cooker (one device!) With a 3f connection

CYRUS2 · Answer

Non-stop and the fuse will not turn off. The value of this fuse determines the ZE and therefore seals it.

Radek_19 · Answer

I think I misled, I actually have 20A in the box, although the website shows 25A if it's this fuse.
The stove remains gas. I think I will leave it as it is, only with this 3-phase fuse, I will take someone to make it work properly and safely. If it starts blowing fuses somewhere, I'll start thinking about increasing the power.

Evaluating Tauron G11 Contract: Is 4kW and 25A Pre-Counter Sufficient for New Apartment?

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