Virgil,
As a rule of thumb (as much as I hate them) you can run about 225 feet of EMT before the reactance of the conduit becomes a problem
If you have a recent copy of "Soares Book On Grounding" see table 11 in the back.
Parallel grounded conductors are great, did you ever try to run anything bigger than 500kcmil?
The sin is when you have a grounded conductor and a grounding conductor in parallel.
I'm with you on the loose screws & fittings. Which is the reason I too pull in an equipment ground, and connect it to every box it passes through.
Tom
[This message has been edited by Tom (edited 05-07-2001).]
