Hi,
when we planned the electrical system, we included a 5-core underground cable as a reserve for the garden. It is intended for future garden lighting and power supply. The cable comes out roughly in the middle of the property, under the terrace.
I’m not looking for advice on how to properly connect the cable—that will be done by professionals.
But for my further garden planning, I have the following questions:
when we planned the electrical system, we included a 5-core underground cable as a reserve for the garden. It is intended for future garden lighting and power supply. The cable comes out roughly in the middle of the property, under the terrace.
I’m not looking for advice on how to properly connect the cable—that will be done by professionals.
But for my further garden planning, I have the following questions:
- Can I split this cable into two independent circuits? There is a simple switch inside that is already planned for this purpose. It could later be replaced with a double switch to control each circuit separately.
- Can I then run one circuit to the left side of the garden and the other to the right side? What happens to the green/yellow PE (protective earth) conductor in this case?
N
nordanney16 Mar 2020 11:46Golfi90 schrieb:
Would it be possible to connect 1 continuous power supply (outlets and lighting in the garden shed) and 2 separately switchable circuits (1 lighting in the garden, 1 pump in the garden)?Yes
nordanney schrieb:
YesThank you very much! This opens up completely new possibilities! Until now, I have always assumed only one constant power supply and one switched connection.
Golfi90 schrieb:
Thank you very much! This opens up completely new possibilities! Until now, I had always assumed just 1 constant power line and 1 switchable line.But be mindful of the total current if the blue wire is used solely as the neutral conductor, and avoid excessively long cable runs as mentioned above.Oops, okay.
Well, the 100 meters (330 feet) was a rough estimate.
But just the cable from the terrace to the device will probably reach 50 meters (165 feet).
If you also include the cable inside the house, the 100 meters (330 feet) doesn’t seem that exaggerated.
I think in the end, one loop will be about 10 meters (33 feet) and the other about 50 meters (165 feet) measured from the terrace.
But the underground cable currently in place is only 2.5 mm² (about 3 AWG) if I remember correctly.
So, using a thicker cable for the rest of the garden wouldn’t really make a difference, right?
Well, the 100 meters (330 feet) was a rough estimate.
But just the cable from the terrace to the device will probably reach 50 meters (165 feet).
If you also include the cable inside the house, the 100 meters (330 feet) doesn’t seem that exaggerated.
I think in the end, one loop will be about 10 meters (33 feet) and the other about 50 meters (165 feet) measured from the terrace.
But the underground cable currently in place is only 2.5 mm² (about 3 AWG) if I remember correctly.
So, using a thicker cable for the rest of the garden wouldn’t really make a difference, right?
No, that doesn’t really help, because the bottleneck would be the connection to the cable with 2.5mm² (2.75 sq. ft). As someone already mentioned here, a junction box or panel distributor would be a good solution. You would install a 6A fuse for the 50m (165 ft) cable and a 16A fuse for the 10m (33 ft) cable. But only if you use 2 neutral conductors.
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