George:
Well for one, article 250.130c says a single conductor can be run from a device to the panels neutral buss, and they used to accept running a grounding conducctor to the water pipe, when replacing a 2-wire receptacle with a 3-wire.
In another part of the code it says because of proximity all conductors are suppose to be as close together as possible to reduce the impedance and to ensure that the breaker will trip or the fuse will blow.
My question is when there is a fault how is the reactance of the circuit affected and if the proximity thing is important why is it permissible to run a conductor separate from the the conductor delivering the fault.
