Power distribution standard and safety measures help please

[ibrahim4941]

good day everyone,

I wonder if anyone can direct me please on the international standard number or name that explain the safety and standard procedures in better distribution of power in breakers and panels from transformers.

in short, as I learned in my school and as best practice that when distributing loads on branches the following must be taken into account:

1- the power supplied in each branch must be at least 20% more than the needed power required by equipment linked to this branch for safety reasons.

2- the power amount remaining in any MV-to-LV transformer after connections must be at least 20% of the total transformer maximum capacity.

I would really appreciate it if anyone can direct me to the exact standards that explain or mention this because I need to present it to our contractor who is building our facility.

best regards,
ibrahim

 

[Simon Bridge]

Welcome to PF;
Your question is actually about law rather than science.
An Engineer registered in your country will know the appropriate law: you are best advised to consult one.

I'm afraid that the health and safety regulations are different for different countries and can even vary between different parts of the same country. Your local regulatory body will have a manual of the regulations for you to consult and you may even find one in a library.
Good luck.