ᐅ Electrical Planning in the Garden (5 x 1.5 mm²)

Hello everyone,

We are in the process of building our single-family house and have had an initial meeting with the electrician to discuss the first planning phase. He will be laying underground cables in the garden, and the quote specifies 5x1.5mm² (5x16 AWG).

I assume the cable looks like this:

- Yellow/green
- Blue
- Black
- Brown
- Gray

I will install outdoor sockets in the garden and plan to connect yellow/green, blue, and black as usual.

What are the other two wires for? I believe they might be for a separate circuit, but why?

I have a second meeting next week and will ask directly, but I want to be at least somewhat prepared.

Thank you
Best regards
Marco

Better to have than to need.
Later on, you might want to control a lamp with a switch, a pond pump, or something else.
Believe me, the two additional cables will cost you about 3.71 euros or 5.26 euros more than a 3x1.5 square millimeter (3x16 gauge) cable.

Please use the brown cable, not the black one! Phase 1 must be brown. Black and gray are connected when additional phases are needed. However, the safest option—and as the question already suggests—is to leave the whole thing to a professional!

seat88 schrieb:

Better to have it than to wish you had it later.
You might want to control a lamp, a pond pump, or something else with a switch later on.
Trust me, the two additional cables cost you only about 3.71 euros or 5.26 euros more than a 3x1.5 mm² (3x1/0.5 inch²) cable.

For me, having the 5x1.5 mm² (5x1/0.5 inch²) cable is totally fine, no problem at all; I just wanted to know how they are supposed to be connected 🙂

Thanks!

AxelH. schrieb:

Please use the brown wire instead of the black one! Phase 1 must be brown. Black and gray are connected only if additional phases are needed. However, the safest option — and this is also suggested by the question — is to leave the whole thing to a professional!

Ok, thank you very much! I will then use brown 🙂

But what about the yellow/green and blue wires if I want to use black and gray? Will they be connected on all three phases?

Thanks
Best regards
Marco

MarcoGT schrieb:

But what about the yellow/green and blue wires if I want to use black and gray? Are they then connected to all three phases?

Yes, of course. If you need phases 2 and 3, the yellow-green and blue wires must also be connected. And once again: This question clearly shows that a professional should handle this. Electrical installations without basic knowledge are VERY dangerous!