Here is the email Frank sent me, that you all wanted a copy of.....
John, the twisting helps the inductance and the conduit provides superior
shielding. I have Romex (albeit 12 gauge) in my other 2 dedicated lines and
I can tell the difference with no problem. Here in Michigan no one carried
individual conductor SOLID THHN 10 gauge (everyone had stranded) and so I
bought Romex 10/4 (which has FOUR conductors - 3 shielded and one bare wire,
all solid) and stripped off the plastic type coating. The beauty of this
approach is that in this 10/4 the four conductors are already twisted (unlike
in Romex 10/3 in which the conductors are side by side). Other people who
have done this same thing have bought three separate conductors and then gone
through the super hassle of twisting it in a drill and a vice (a real pain in
the as$^%#$#). This way I simply used a fish tape to easily slide the 4
conductors through the flexible conduit. Then you leave the bare wire and
the conduit unhooked to anything at one end and then the conduit becomes a
great RFO/EMI shield.
You can hear many different things on this topic but I trusted some people
who know their stuff and I am VERY happy with this choice. I was shocked at
the improvement.
I hope this helps!
Good luck!
Frank
John, the twisting helps the inductance and the conduit provides superior
shielding. I have Romex (albeit 12 gauge) in my other 2 dedicated lines and
I can tell the difference with no problem. Here in Michigan no one carried
individual conductor SOLID THHN 10 gauge (everyone had stranded) and so I
bought Romex 10/4 (which has FOUR conductors - 3 shielded and one bare wire,
all solid) and stripped off the plastic type coating. The beauty of this
approach is that in this 10/4 the four conductors are already twisted (unlike
in Romex 10/3 in which the conductors are side by side). Other people who
have done this same thing have bought three separate conductors and then gone
through the super hassle of twisting it in a drill and a vice (a real pain in
the as$^%#$#). This way I simply used a fish tape to easily slide the 4
conductors through the flexible conduit. Then you leave the bare wire and
the conduit unhooked to anything at one end and then the conduit becomes a
great RFO/EMI shield.
You can hear many different things on this topic but I trusted some people
who know their stuff and I am VERY happy with this choice. I was shocked at
the improvement.
I hope this helps!
Good luck!
Frank