IS IT PERMISSIBLE TO INSTALL (2)#3THHN & (1)#4THHN COPPER IN ONE INCH CARFLEX / LFNC-B AND STRAP (1)#6 BARE COPPER TO THE OUTSIDE OF THE ONE INCH LFNC-B FEEDER FROM A MAIN DISTRIBUTION PANEL TO A SUB-PANEL LESS THAN 50FT AWAY? THE MAIN DISTRIBUTION PANEL IS OUTSIDE OF THE DWELLING AND THE SUB-PANEL IS INSIDE THE DWELLING.