Older Residential Wiring Diagram. Residential installations between 1965 and 1974 sometimes used wires that were solid aluminum or aluminum covered with a thin layer of copper. This wiring diagram shows 120 v coming from l1 of a circuit breaker through a switch powering a boiler control and returning through l2 back to the neutral bar of the circuit breaker box.
They are often photos attached with highly detailed drawings or labels. Low voltage wiring cat5 vs cat6. To get from 120 v to 24 v we use a transformer.
3 way light switching new cable colours 3 way light switch old cable colours.
While varying somewhat by area of the country in the us latin america europe and other areas there are recognizable generations of electrical wiring knob tube greenfield armored cable or bx wiring plastic. How to wire a telephone jack diy home wiring color code old cabling 4 in commercial and residence new ppt online need help router phone allischalmers forum rewire vintage so it works today the art of doing stuff connector homyet parts line plusnet community residential basics colour bt extension socket. Older telephone wiring was a basic cat 3 4 conductor or 2 pairs with red green black yellow. 1 master element 2 time delay starting or closing relay 3 checking or interlocking relay 4 master contactor 5 stopping device 6 starting circuit breaker 7 rate of change relay 8 control power disconnecting device 9 reversing device 10 unit.