relay contacts the small number 28 in the right hand margin tells you the line location of the contacts associated with relay coil ifr electrical wiring is an electrical installation of cabling and associated devices such as switches distribution boards sockets and light fittings in a structure wiring is subject to safety standards for design and installation allowable wire and cable types and sizes are specified according to the circuit operating voltage and electric current capability with further restrictions on the this article may contain indiscriminate excessive or irrelevant ex les please improve the article by adding more descriptive text and removing less pertinent ex les see wikipedia s guide to writing better articles for further suggestions july 2012 a collection of free and paid circuit drawing softwares which can be used to draw wiring diagrams schematic diagrams electronic.
circuit diagrams
