<P> Knob and tube wiring was eventually displaced from interior wiring systems because of the high cost of installation compared with use of power cables , which combined both power conductors of a circuit in one run ( and which later included grounding conductors ) . </P>
<P> Knob and tube wiring was eventually displaced from interior wiring systems because of the high cost of installation compared with use of power cables , which combined both power conductors of a circuit in one run ( and which later included grounding conductors ) . </P>
why is knob and tube wiring no longer functional
why is knob and tube wiring no longer functional
high cost of installation compared with use of power cables
high cost of installation compared with use of power cables