[Elecraft] I need some grounding-strap guidance, if'n you please

[David Christ]

One final note on connecting grounds.  According to NEC the 
grounding/protective ground (green) wire and the grounded/neutral 
(white) wire are to be connected only at the main entrance panel.

In many cases where there is metal conduit, the conduit is used for 
the grounding (green) system. To reduce noise sometimes a grounding 
wire for each outlet is run all the way back to the point where the 
grounding and grounded systems are bonded together.  As I recall, 
generally these outlets are orange.

You can see this in action where there is more than one fuse box in 
the house.  There is a green screw that connects the terminal block 
for white wires to the box (which is grounded).  This screw is not 
used in any of the sub boxes.

David K0LUM