Main distribution board during construction process. 
<ul><li>Ground system TN-C-S (as you can see in down left corner)</li>
<li>Main switch 100A</li>
<li>Load:
<ul><li>50A each stair (DIN rail in the middle)</li>
<li>25A to house light and water heating (DIN rail below)
<ul><li>B20 to water heating</li>
<li>3xB10 to cellar and attic light</li>
<li>3xB10 to TV and internet providers</li>
<li>2xB6 to light on stairs</li>
<li>1xC1 to driving circuits (light on the stairs will be drived by twilight relay)</li></ul></li></ul></li></ul>
As you can see, it is quite hard to work with cable 16mm²; so do template and cut proper length of fat cables before puting to distribution board, otherwise you will suffer yourself to working such hard cable and became tired quickly with zero result. And don't forget to join distribution board's cover to main PE terminal!
Fully designed and constructed by <a href="//commons.wikimedia.org/wiki/User:Dmitry_G" title="User:Dmitry G">Dmitry G</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>