Joel Jaeggli wrote: >> >> Getting back to the original statement. in-wall wiring in most >> places has to be plenum rated to meet building codes, in addition >> most of the time premisis wiring is done with solid copper rather >> than stranded (which is more flexible and is used for jumpers. Plenum cable is required if the cable will be routed through plenum spaces of buildings. This usually includes the spaces above drop ceilings or under raised floors. It usually does not include walls. If you plan to run wires from the walls up into the space above the drop ceiling, then yes, plenum cable will most likely be required. If the wiring is restricted to the walls then non-plenum is usually sufficient. Check your local building codes to be sure. -- Henry
