ᐅ Electrical outlets: Always prepare in groups of five? What is the best approach?
Created on: 31 Jul 2019 12:52
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Christian K.
Hello everyone,
We are doing the electrical installation ourselves, and I had planned to drill boxes for five outlets each, but only use, for example, two of them. The rest would be covered and plastered over. The advantage would be that if I later need more outlets, I can remove the plaster and expand the outlet.
Now I’ve heard that making this flush with the wall is problematic. I would have to use spacer rings or similar. Also, the effort to simply drill new boxes later wouldn’t be any greater. In other words, the effort is higher if I drill more boxes in advance.
What do you think?
One more point that came up later: We are running NYM 7x2.5mm² cables per room for the outlets. The idea is to be able to measure and switch five outlets, and the rest are constant power. The problem is that connecting a 7x2.5mm² cable inside a device box with an outlet is not possible due to limited space. My idea is therefore that if, for example, I have a double outlet, I will install at least one additional empty box nearby to make the cable connections.
So more specifically, my questions are:
a) Is it worth pre-drilling?
b) What should I keep in mind during installation so that it is not visible later?
c) Do you have a better solution for cable connections in an empty box?
Cheers
We are doing the electrical installation ourselves, and I had planned to drill boxes for five outlets each, but only use, for example, two of them. The rest would be covered and plastered over. The advantage would be that if I later need more outlets, I can remove the plaster and expand the outlet.
Now I’ve heard that making this flush with the wall is problematic. I would have to use spacer rings or similar. Also, the effort to simply drill new boxes later wouldn’t be any greater. In other words, the effort is higher if I drill more boxes in advance.
What do you think?
One more point that came up later: We are running NYM 7x2.5mm² cables per room for the outlets. The idea is to be able to measure and switch five outlets, and the rest are constant power. The problem is that connecting a 7x2.5mm² cable inside a device box with an outlet is not possible due to limited space. My idea is therefore that if, for example, I have a double outlet, I will install at least one additional empty box nearby to make the cable connections.
So more specifically, my questions are:
a) Is it worth pre-drilling?
b) What should I keep in mind during installation so that it is not visible later?
c) Do you have a better solution for cable connections in an empty box?
Cheers
M
Mottenhausen4 Aug 2019 21:09You mean like how today we’re amazed by extremely complex networks of analog TAE sockets in every room? Yes, yes, it’s not that long ago that people thought something like that would be necessary in the future.
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Christian K.4 Aug 2019 23:50Knöpfchen schrieb:
Just use deep back boxes, then you’ll always be on the safe side.
When arranging them horizontally, always insert the cable entry at a 45-degree angle—so diagonally—this way the mounting clips on the sockets won’t damage the cables, and the socket domes remain available for later upgrades. How deep exactly are deep back boxes?
So if I have, for example, a triple back box, do I enter it on the left side at a 45° angle, wire all the sockets, and then exit on the right side again at 45°?
A bit off-topic, but can anyone recommend an online shop where I can get good cables for private use? For example, I need conduit for embedding in concrete and don’t necessarily need a halogen-free, internally coated conduit from a particular brand. A simple, affordable conduit will do—meaning good quality but not too expensive, since it’s not for commercial use.
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