Choosing the Right Earth Cable for 50m Distance, 3 Phase, 25A Load & 9KW Max

Question

Hello !
I want to connect the power supply from one house to another within a distance of 50 m.
In the "source" house, the pre-meter protection is 25A for each phase. What kind of earth cable to use for this purpose, assuming that standard household appliances, such as washing machine, fridge, microwave, lighting etc., will be supplied from it. I think that the maximum load should not exceed 9 KW. Is 4x2.5 mm ^ 2 enough?

Łukasz-O · Answer

At least, at least 5x6mm2- Dude by 2.5mm, forget that.

wssx · Answer

Approx. At least 5x6 mm ^ 2 and optimally to do it once and for all? Should the cable be additionally provided in the pipe sheath or not?

filip.s · Answer

Give 5x10mm2 and have peace of mind for a dozen or so years

It does not have to be in the tube, but if you want to put it in the arot tube, remember that you need to calculate the load capacity for the tube and not for the ground :)

Regards!

irekr · Answer

Do not put cables smaller than 10 mm sq.m in the ground. I would dig a sector worker 5x 16 Al ...

Arturo2005 · Answer

And this is just new :) You can possibly YAKY 4x25. It is much cheaper.

irekr · Answer

... I'm just for fun ... On this length, I would not use a smaller than YAKYS 4x32 and a good earth electrode ...

jorgkrab · Answer

Is 4x32mm? a new standard in cable cross-sections, I have not heard of 35mm?, it is correct.

irekr · Answer

mea culpa ... sorry ..

pawka2 · Answer

give 10mm2 will be with a margin and enough, no madness with that 35mm

spin · Answer

I think that the YKYżo 5x6 should be enough, both because of the voltage drop and the current endurance.
you have to provide a conduit if the cable on your route crosses another network (enough at the crossroads + 1.5m on each side)
greetings

micrus_poznan · Answer

if for a single-family house, the cross-section of the wire (or actually the cable) is given in the connection conditions, but for me it must be 5x10

sq9jjh · Answer

Just out of curiosity, there are such connection conditions that one house joins with the other being the source? (because of these heat waves I am a bit uncomfortable).

Łukasz-O · Answer

Dude, it's not the heat that hurts you, only new users who don't want to read the topic, but answer just like that.

marian_em · Answer

YKY 4 (5) x6mm? (or its counterpart Al) is completely sufficient, still the load will be much less than the stated 25A per phase. Unless you are going to install some electrically driven machines there, put a cable with more reserve. Bury your cooperage along with the cable, it certainly won't hurt

flaber007 · Answer

In my opinion, the cross-section is 5x10 in copper and as for the cable sheath, it should go in the pipe where, for example, there is a possibility of mechanical damage, i.e. parking, pavement, road, of course, blue or red foil should also be. A few posts above, a colleague wrote that you cannot lay cables with cross-sections smaller than 16mm2 in the ground, there is something but it concerns street lighting.

spin · Answer

and if you had, for example, 2 houses on 1 plot, you would do 2 separate connections?

sq9jjh · Answer

You made me laugh. I like you already. I do not know if it is possible to put two houses on one plot? Maybe you can. I can not imagine anything else than two separate connections, a cabinet with meters and security probably may be one or two separate cables. Maybe you have a good idea: power supply of single-family houses in series. Who knows? Do not be discouraged, you will open a new chapter in energy. There are ring networks, there will be radial networks, and there will be series. Seriously, I would do it like Kol. Micrus_poznan wrote: according to the technical conditions of the connection. Regards.

Anonymous · Answer

There is something about it . This is exactly what happens when there are two plots of land with two houses, two meters and one owner. It depends on the performance, but for example, the ZK1 can be common and the SL separate. There may also be one plot of land with two houses and multiple owners. Power supply from the overhead line does not always have a ZK. Now is democracy and capitalism . What is not forbidden is allowed.

sq9jjh · Answer

It's still nothing. An old building structure or several from one owner, and those divided and rented by 10 or more companies. Only there are the miracles on the stick. Cables go water, land and air, and over the roof too. You've probably seen what electricians can boast of fantasy.

Choosing the Right Earth Cable for 50m Distance, 3 Phase, 25A Load & 9KW Max

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