[R-390] RE: Shack Grounding

[Norman Ryan]

Hello, all,

I agree it's a good idea to verify which terminal on the R-390A's line
filter gets the hot lead-- "A" or "B."  In rare instances it can be
reversed.  So, be sure to check that the fuse post tests "hot" in each
instance.

Additionally, if you use a power cable with leads colored differently
from the usual white-black-green, again, verify which lead goes where by
checking its three prong plug.  To do so, point the plug towards the
power receptacle with the ground prong downward.  The left prong should
be larger than the right prong.  The left prong is for the neutral and
the right prong is for the hot wire.

Finally, check out the power outlet receptacle with a meter or neon test
lamp.  Looking at the receptacle and assuming the ground is downward,
the hot lead should be the right hand slot.  Here is where one of those
receptacle testers will come in handy.  They're cheap and useful for
checking out ALL your power receptacles.  Whether the house wiring is
new or old you may be surprised at what you find.

73 de Norman KG4SWM


Chuck Rippel wrote:
> 
> A couple of suggestions.  First, install a 3 wire power cord.  I use old plug-in
> computer power cords and cut the female end off.  Make sure the black lead
> is attached to the side of the hash filter on the receiver that is fused.  I believe
> its marked "B" but don't hold me to it.  Remove the fuse and prove the
> connection with an ohm meter.
> 
> Put a ring terminal on it and hook the green ground lead under the nut that
> holds the terminal cover on.