ᐅ No temporary power distribution box; using electricity from the neighbor
Created on: 15 Dec 2014 20:08
K
Knöknö
I have a question,
We plan to build a solid brick house next year.
Now my question for you:
I would like to save costs on the temporary construction power box. Therefore, I would like to get power from my neighbor (he agrees) until the shell of the building is completed and E.ON can install a meter in my basement.
I would get a temporary power box for free from an electrician.
But now my question: according to the construction company, the crane requires a 32 A connection.
Would it be sufficient if I install a 300mA RCD (residual current device) and a 32 A fuse (Neozed type) at my neighbor’s place, and run a 32 A CEE cable to the covered terrace, where I then connect my temporary power box? Inside the temporary power box, there are six sockets: two 16 A CEE and one 32 A CEE. All circuits are protected by two 30 mA RCDs.
Would the 32 A from the neighbor be enough, or would the neighbor's main fuse keep tripping because the crane draws too much power?
I would appreciate any advice you can give me.
We plan to build a solid brick house next year.
Now my question for you:
I would like to save costs on the temporary construction power box. Therefore, I would like to get power from my neighbor (he agrees) until the shell of the building is completed and E.ON can install a meter in my basement.
I would get a temporary power box for free from an electrician.
But now my question: according to the construction company, the crane requires a 32 A connection.
Would it be sufficient if I install a 300mA RCD (residual current device) and a 32 A fuse (Neozed type) at my neighbor’s place, and run a 32 A CEE cable to the covered terrace, where I then connect my temporary power box? Inside the temporary power box, there are six sockets: two 16 A CEE and one 32 A CEE. All circuits are protected by two 30 mA RCDs.
Would the 32 A from the neighbor be enough, or would the neighbor's main fuse keep tripping because the crane draws too much power?
I would appreciate any advice you can give me.
B
Bauexperte17 Dec 2014 10:51Hello,
You need to ask your shell builder; only they can tell you what power capacity is required.
Best regards, Bauexperte
Knöknö schrieb:
Exactly, but I’m not sure if 32A will be enough for the crane if other electrical devices are also connected
You need to ask your shell builder; only they can tell you what power capacity is required.
Best regards, Bauexperte
In many specifications, it is often stated pro forma that there must be a connection point for a crane, even though it is frequently not needed. The construction specification has to cover almost every eventuality, whether you are building a single-family house on a flat plot with access from all sides, or a multi-story apartment building in a narrow gap within a historic city center.
So, just ask your construction company again if a crane is truly necessary.
So, just ask your construction company again if a crane is truly necessary.
Hello,
As a certified electrician, here is my input:
Technically, your plan could be feasible.
The crane won’t draw the full 32A.
However, it is still not recommended.
Since, as you mentioned, you are an electrician, you should be familiar with selectivity.
This means the fuse for your neighbor should preferably be a gL fuse rated at 50A. A 35A fuse might not be sufficient due to the length of the supply line.
But first, you need to check which fuses your neighbor has installed in their main distribution board.
If they are smaller than your upstream fuse... well, I don’t think I need to explain further.
Why would you want to install an RCD (residual current device) at your neighbor’s place?
The line is protected by gL fuses, not by an RCD, and hopefully, you are not connecting any loads directly to the supply line.
Remember: if you install the temporary power distribution box yourself, you are responsible for the daily inspection (see occupational safety guidelines).
This means daily checks to ensure the protective devices are functioning properly, plus keeping an appropriate record or log.
Do you have the necessary qualifications for this?
Judging by your question, I would say no (sorry).
I know such procedures are rarely followed on construction sites, but they are mandatory according to regulations, and we Germans do love our regulations.
You also need to consider the correct dimensioning of the supply line and voltage drop.
Additionally, you might need to think about a meter at your neighbor’s place—they probably won’t give you electricity for free.
So if you have to purchase all the necessary components and know their prices,
I would first calculate whether this is worthwhile at all.
The main supply line to your building must be installed anyway, and there you can connect your own temporary power distribution box.
Moreover: how well do you know your neighbor?
Can you be sure they won’t simply disconnect the plug if something bothers them?
What will you do if there are problems in their electrical installation and you lose power? Possibly just when a beam is hanging on the crane and nobody is home?
Or what if a fault you cause (e.g., swapping phase and neutral) damages their entire installation?
Now you should be able to make your own decision.
Regards,
EF
As a certified electrician, here is my input:
Technically, your plan could be feasible.
The crane won’t draw the full 32A.
However, it is still not recommended.
Since, as you mentioned, you are an electrician, you should be familiar with selectivity.
This means the fuse for your neighbor should preferably be a gL fuse rated at 50A. A 35A fuse might not be sufficient due to the length of the supply line.
But first, you need to check which fuses your neighbor has installed in their main distribution board.
If they are smaller than your upstream fuse... well, I don’t think I need to explain further.
Why would you want to install an RCD (residual current device) at your neighbor’s place?
The line is protected by gL fuses, not by an RCD, and hopefully, you are not connecting any loads directly to the supply line.
Remember: if you install the temporary power distribution box yourself, you are responsible for the daily inspection (see occupational safety guidelines).
This means daily checks to ensure the protective devices are functioning properly, plus keeping an appropriate record or log.
Do you have the necessary qualifications for this?
Judging by your question, I would say no (sorry).
I know such procedures are rarely followed on construction sites, but they are mandatory according to regulations, and we Germans do love our regulations.
You also need to consider the correct dimensioning of the supply line and voltage drop.
Additionally, you might need to think about a meter at your neighbor’s place—they probably won’t give you electricity for free.
So if you have to purchase all the necessary components and know their prices,
I would first calculate whether this is worthwhile at all.
The main supply line to your building must be installed anyway, and there you can connect your own temporary power distribution box.
Moreover: how well do you know your neighbor?
Can you be sure they won’t simply disconnect the plug if something bothers them?
What will you do if there are problems in their electrical installation and you lose power? Possibly just when a beam is hanging on the crane and nobody is home?
Or what if a fault you cause (e.g., swapping phase and neutral) damages their entire installation?
Now you should be able to make your own decision.
Regards,
EF
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