[R-390] Is your R390A Power Cord Connected Correctly ?

[Roy Morgan]

On Dec 3, 2012, at 11:01 PM, chuck.rippel at cox.net wrote:

> ...    Pull the fuse and with an ohm meter, check continuity from  
> the line side of the fuse to the rear panel connection where the  
> black wire on the line cord is connected.

Thanks to Chuck for this alert.  I plan to add it to my "diatribe" on  
line cords and bypassing (copy to any who request it).

Two additional points:

1) The "line side of the fuse" (on a chassis mounted fuse holder as  
found in these radios) should be the terminal at the end of the fuse  
holder farthest from the chassis, on the center tip of the holder.   
This reduces the chance you will come in contact with line voltage as  
you install or remove a fuse.  (I suggest a bit of heat shrink tubing  
on that terminal.)

2) On the chance you find a European color coded line cord installed,  
here are the colors:

LINE             (US) Black  =  (EU)  Brown
COMMON   (US) White  =  (EU)  Blue
GROUND    (US) Green  =  (EU)  Green/Yellow

(If there are other color schemes found overseas, someone let me know,  
please.)

> ... 0 ohms from the line side of the fuse to the black wire or to  
> the prong which plugs into the narrow side of the outlet is correct.

I think of it this way:  the wide, broad flat blade of the plug (and  
wall outlet) are most like "Ground" and need to be most reliable.

Roy

Roy Morgan
k1lky at earthlink.net
K1LKY Since 1958 - Keep 'em Glowing!