Southwire Romex 10/2 NMW/G Wire vs Romex SIMpull 10/2 NM-B Cable 25 ft

These are the same Southwire 10/2 NM-B cable in 25 ft coils, so the copper, insulation and ampacity are identical. The real difference is the jacket: Product B uses SIMpull, a slicker nylon sheath that pulls through studs, conduit and existing walls with less friction and less chance of jacket damage. Product A is the standard PVC-jacketed version. Buy B if you are fishing cable through finished walls or long runs; buy A if the run is short and open and you just want the basic cable. Owners of both report the same solid copper performance; complaints center on coil stiffness in cold weather, not on the wire itself.

• Choose the Southwire 10/2 if your run is short and open, like a garage subpanel or a dryer circuit in an unfinished basement.
• Choose the Romex SIMpull 10/2 if you are pulling through studs, conduit or finished walls and want the slicker jacket to cut friction.