Externally, the jollity of aged men has much in common with the mirth of children; the intellect, any more than a deep sense of humour, has little to do with the matter; it is, with both, a gleam that plays upon the surface, and imparts a sunny and cheery aspect alike to the green branch and grey, mouldering trunk.
1) Knob and tube wiring is two-stranded â with a hot wire and a neutral wire only â it uses no ground wire. There is absolutely no protection whatsoever when a fault occurs.
Knob and tube wiring is known to have caused house fires. Approved wire types include: Å NM (non-metallic) cable, often called by the trade name âRomexâ, a plastic covered-cable for use in dry locations (older NM cable may be cloth covered). Å NMC, similar to NM but rated for damp locations. Å UF (underground feeder), a plastic-covered waterproof cable for use underground.