I got a sega new astro city which I fully restored. It has a mame machine + Naomi 2/net dimm setup.

Dude, the stuff used in the US is ancient.

The boxes in Europe are round because of the reason Etienne gave and we use this type of outlets:

It's all fine and well, if the entire house was made of concrete and nothing else.  What is the cost of heating a home made of concrete compared to one made of wood?  Due to much colder weather up here in the North, electrical boxes are on the warm side of the hot/cold barrier, so they have to be rectangular.  You don't want cold to come into the dwelling through the box, nor do you want hot/cold to mix in the box (causing moisture/corrosion in the outlet!)

Electrical fires are much more common than you might think.  Some common causes are:

- rodents biting on wire - a mouse can chew through plastic - not steel.  And for those of you with rodents at home (e.g. my pet bunny) know how these animals love to bite on electrical wire!
- ancient wire upgrades - in the 1970's it was common to use aluminium wire.  With renovations, people upgrade to copper.  You can't mix copper + aluminium - it causes fires
- sheet rock installers screw right through electrical wire!  That's why wire is protected inside steel conduit or metal plates are used.

Thanks for sharing.. I'm sure the European homes are much stronger built in the long run; but alas, there's no such thing as perfect. 

Having wood homes has the advantage of future proof (simple to run network wire, fiber optic, new electrical, new plumbing, etc).  Also, wood homes tend to be much warmer than stone homes.  But the flaw with wood homes is settling. Over time, homes settle in soft sandy earth, and cracks in the concrete/plaster need to be fixed.  Wood homes also have the potential of having termite damage.

Hi Bruno, I went back to read how you did the wall with v2 (pg 16 or so) and I finally understand what you're trying to do here -- you will be installing fiberglass on the osb and then painting it!

This process is very similar to what we do here in very wet spots (eg inside shower) we use a product called ditra which is basically what you're doing. It's 100% water proof and acts as vapor barrier but isn't it super expensive to built a wall this way?? Fiber glass sheets in Canada cost hundreds of dollars per role!!

Hey Bruno, I'm confused, is this the finished wall, or will drywall/gypsum board/other material be installed on top of all of this now that electrical is done?

Wow.. Interesting.  In north America, it's against building code to build walls with 2x4 wood with the 4" side being parallel with the wall (this makes the wall cavity only 1.5" wide - not enought for plumbing and other goodies you might want to run in there nor enough space for minimum insulation standards)

Do you even need permits to build your lair?

You know Bruno, you will never be able to sell this house once done! What will the new owners do with all these strange window-less buildings in the back, and what would you do with all your machines when you'd want to move!?

One day they'll have to put you into the ground in your backyard!