Outdoor power line installation, 5-core underground cable for garden house and electric gate

That depends a bit on the cable lengths and the other consumers. 5x4mm² might still work, 5x6mm² would be my minimum recommendation, and if it fits into the conduit, 5x10mm² is the safe choice even for everything in the future.

That depends a bit on the cable lengths and the other consumers. 5x4mm² might still work, 5x6mm² would be my minimum recommendation, and if it fits into the conduit, 5x10mm² is the safe choice for everything future as well.

Thank you very much. That definitely helped me with further planning. In the multi-duct, there is space for a maximum of 6mm. Unfortunately, we did not pull any additional conduits. You only build once and always wiser afterwards.

For the pool, you should also have fresh and wastewater ;) hope that is planned. And Lan or Wifi.

Hello,

I wonder what these exaggerated cross-sections are supposed to achieve, especially in the single-family house sector.

A cross-section of 4 mm2 can be loaded with 32 amperes. With three phases, that is 22 kW, sufficient for a wallbox.

A cross-section of 2.5 mm2 can be loaded with 16 amperes. With three phases, that is still 11 kW, still enough for a wallbox.

If it is only about lighting and a few sockets in the garden and the shed, 1.5 mm2 is also sufficient. If a pool is added, 2.5 mm2 is certainly better, since a continuous load in the higher ampere range is to be expected - however, the 2.5 mm2 are only protected with 16 A.

Best regards

Depending on whether an additional heat pump is also connected… The length of the cable also plays a role. I would rather go ahead and pull a 6mm2 cable right away.

A cross-section of 4 mm2 can be loaded with 32 amperes. With three phases, that's 22 kW, sufficient for a wallbox.

A cross-section of 2.5 mm2 can be loaded with 16 amperes. With three phases, that's 11 kW, still enough for a wallbox.

Yes, but only for that and nothing else. So can he now connect his planned stuff with the 2.5 mm²? Yes! Later add another wallbox? No!

Again, the argument is pointless. He NOW has the option to pull something useful. That is maybe 10m up to the distribution box; from there he can then distribute 1.5 mm² and 2.5 mm² in the garden if desired. What is the price difference between 10m of 2.5 mm², 4 mm², and 6 mm²? It’s not worth thinking about whether you can save there.