I'm an electronic engineer and I use a schematic capture program for my schematics; can't really see how TC would be of any use.
Anyways... when you select everything, press the 'D' key to allow you re-specify the local origin for the current selection. Move the cursor to a good point and snap the reference point to it (the 'V' snap will probably be the easiest one to use).
You might want to Group everything before re-specifying the origin, copying and pasting. It will make the re-specified Reference Point much "stickier".
Oh, yeah... Copy and Paste will only work in Wireframe mode. If you have Hidden Line or any other rendering mode selected, C&P will fail.
TC Pro Platinum 2019, 2018, 2017, 2016 & 2015 (all with LightWorks & RedSDK) & V21
System: i7-5820K @ 3.30GHz, ASRock X99 Extreme4, 16GB DDR4-2133 RAM, Gigabyte GTX 970, Samsung NVMe SSD 950 (256GB), Windows 7 Pro (64-bit) SP1