2. cables
  3. 1136396941

Technical Help with DIY Power cords, Please?

Hi everybody -
I'm going to be building power cords for a pair of monoblocs and I'll be using 12-guage shielded stranded conductors. I've made plenty of power cords before for tools, but never used shielded wire. I hate to sound so ignorant, but should the shield be tied to the grounding conductor, left to float, or some other configuration? Any help greatly appreciated.
mwp7373
viridian's avatar
viridian
4,184 posts
 
The shield should only be tied to earth, not (+) or (-) and only at the receptacle end, not at the IEC end. If it is tied at both ends, it can act as an inferior groung path and cause hum. Hope this helps. Ususal disclaimer, if you burn down your house and kill yourself, I am not responsible and will not send flowers to the funeral. YMMV.
Marty
nrchy's avatar
nrchy
2,111 posts
 
Marty's comments are in keeping with the procedure I used when building about a half dozen cables. The grounding wire was only connected at the wall, NOT at the amp. The idea is to drain away from the amp.
mwp7373 OP
29 posts
 
Many thanks.
edesilva
768 posts
 
You might want to also check out:

http://www.venhaus1.com/diymains.html

Very highly rated, and good instructions...
More to discover