Cable leaving house to underground.
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And whose has been a negative value.
Only in relationship to the life time of the universe has this post been a quickie
Bearing in mind that that FCU is for the lights, that is the best way to do it you who won't be told.
Either you select an over-current device for the rating of the cable or select the cable for the rating of the 32A MCB.
A mistake you keep making is not seeming to recognise that a 2.5mm² ring has TWO cables, i.e. it is a 5mm² circuit.
There are so many options in what you are asking about that it is impossible to answer without knowing what you are thinking, let alone a yes/no.
I put the first post in a simple way to avoid this, but this being this forum, this is what you get. A lot of one liners as well, like "you don't know what you are doing" and "you are wrong" and "you are botcher", etc, with nothing explaining where I was wrong or what the preferred solution would be in their eyes (very short on that point).
It does not inspire confidence. But after all this tripe, a solution was arrived at. So, it can't be that bad. This is the Internet after all.
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Yes, I will not be told, as it is not the correct solution. Why? because FCUs are hard to press switches which are not good for young and old hands. FCUs for light switches is not a good idea - a last resort.
Interesting. That counters Sunray who says only 16A mcb on the spur cable.
I fully understand that and you know that. The 4mm cable, I did say was electrically sound, just not the way it is done.
Initially I only asked one, then the thread went onto the second point of the ideal method of protection of a small outbuilding or garage CU spurred off a ring - a common situation. So two in all. I did give an example of a solution which I did by splitting the ring into two radials, but that is not always feasible as a ring may have to stay in place. So far you say one thing, and Sunray says another.
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The starting point for circuit design is to determine what electrical equipment you plan to use. This gives us prospective loads. We can the look at the current installation and decide what options are open to ‘design’ your circuits.
You start at the point where you have the circuit. The guys in here are just trying to help you understand the steps you need to follow.
You start at the point where you have the circuit. The guys in here are just trying to help you understand the steps you need to follow.
It offers fusing and isolation, you may of course have an ordinary switch as well.
A good example of not knowing what you are thinking. Your aversion to FCUs was not known.
I can't be bothered to reread everything. To what was it referring.
How do you know? If it is electrically sound then there can be no objection.
You did - a No and Yes would have been strictly correct but not knowing what you were thinking would have been irresponsible.
I presume had I answered "1. No; 2. Yes" we would have heard no more from you. I shall bear that in mind in future.
Whether feasible or not, it is a stupid solution and no one would have known that was the sort of thing you were thinking.
If you want to feed equipment in an outbuilding, you need to look at the loads before deciding to spur off the ring. You may need a dedicated circuit.
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