The gist of this post is that I'm going to install a new 200amp panel that will be located about 5 feet away from the meter as well as a 100amp subpanel which will be installed 40 feet away from the new 200amp panel within the same structure. I'm wondering what size wires I will need for each panel. I recently moved into a new (yet older 1950s era) home in Minnesota which has overhead electrical wires, and an outdated Stab-Lok 100amp panel [ATTACH]37570[/ATTACH] that the inspector recommended replacing. My plan is to have Xcel (our local electrical company) bury our electrical wires and upgrade the home to 200amp service (my understanding is that Xcel will deliver 200amp service to the home during the underground conversion work so why not install a 200amp panel). For the main 200amp panel I'm planning on getting [URL="http://www.menards.com/main/electrical/rough-electrical/load-centers/main-breakers/200a-br-loadcenter-30-40-circuits-value-pack/p-1848174-c-6437.htm"]this[/URL] Eaton 200 Amp Load Center panel. The new panel will be installed directly next to the existing panel (which is located on an exterior wall about 5 feet away from the installed meter), and all existing circuits will be connected to the new panel or (if the wires for the existing circuits don't reach the breakers and neutral/ground bars of the new panel) I'll install junction boxes to connect the existing wires into their new breakers in the new panel. On the opposite side of the house I'm building a new attached garage and will remodel the existing kitchen soon, so I'll have need for several new circuits on that side of the house. So, I'm planning on installing a 100amp subpanel on that side of the house after the new 200amp panel is in place and functioning correctly. [URL="http://www.menards.com/main/electrical/rough-electrical/load-centers/main-breakers/100-amp-br-loadcenter-20-20-circuits-value-pack/p-1984714-c-6437.htm"]This[/URL] is the 100amp panel I'm planning on getting. So, what size and type of wires will I need to connect the new 200amp panel to the existing meter (5 feet away)? What size and type of wires will I need to connect the new 100amp subpanel to the 200amp panel (about 40 feet apart)? Since both panels are in the same structure my understanding is that I do not need to add any supplemtary grounding to the subpanel. Is that correct? The 100amp subpanel will be located really close to the water main, so running a bare copper grounding wire from the new 100amp subpanel to the water main pipe wouldn't be tough to do. Should I add it just to be extra safe and grounded? Is there anything else I should consider as I plan this project?

[URL="http://www.greenlee.com/products/WIRE-FINDER.html"]Wire finders [/URL]are commonly used by electricians to find faults and repair wires without breaking our entire walls. I am wondering if this can be a DIY project and if someone has worked on it. Specifically, the power injector component looks a bit tricky. Would anyone have played with it?