Telecommunications broadband to the home 220v wire can take a line trough, go will not have an impact
1 is a short circuit at A lead to wire fire, fire to both sides. 2 because the electric car charging short circuit caused. 3D at the wire is good, because the D line than the outlet flow. The culprit is the socket A. 4 will not be the battery itself burned up. Recommendation: socket must choose the quality of reliable, not too long line. The socket should be maintained on time.
Certainly no effect, the patch panel is a little more contact resistance, up to tens of milliohms, with the line resistance ratio can be ignored, you can not use the patch panel, then that through the patch panel is absolutely no problem.