Risk Assessment for Design of Lightning Protection System

You should:

1. Go to school.

2. Search the internet.

3. Ask your tutor.

4. If you are being paid to do this, hire an electrical engineer to do it for you.

5. If you are not being paid, you are worth every penny of it.

The questions you asked are far too detailed and require many hours of schooling and training before being qualified to perform the tasks you have mentioned.

This question, and your other question leaves me suspicious of your intentions. I hope you are just a student and that you aren't really trying to design a REAL system.

You don't ever be lazy to write these ?

This should help quite a bit and is what I use when necessary (I have the hard back version).

http://www.dehn-international.com/en/lightning-protection-guide

If you need more information be aware that the risk management standard mentioned (IEC 62305-2) has to be purchased from a standards website.

Thank you very much for your great help