Ba­sic elec­tri­cal read­ing and in­ter­pre­ta­tion

Panay News - - NATION - By Reny F. Gaje, T-III, Este­fa­nia Mon­temayor Na­tional High School, Du­marao, Capiz

SINCE we have de­fined the ma­te­ri­als in­volved in elec­tri­cal con­nec­tions, we will now be­gin read­ing and in­ter­pret­ing elec­tri­cal signs, sym­bols and data.

To un­der­stand and read wiring di­a­grams, we are go­ing to start with a sim­ple power sup­ply, switch, and light.

Di­a­grams are pro­vided with many elec­tri­cal de­vices. The di­a­grams aid in read­ing and in­ter­pret­ing the quan­ti­ties in a cir­cuit. An elec­tri­cian should have knowl­edge and un­der­stand­ing in read­ing these di­a­grams.

Read­ing elec­tri­cal cir­cuit di­a­grams may prove to be dif­fi­cult, but here are some of the key points to fo­cus on. The elec­tri­cal schemat­ics are read from left to right or from top to bot­tom. The sig­nal di­rec­tion in­di­cates the flow of cur­rent in the cir­cuit. It is then easy for a user to un­der­stand when there is a change in the course of the cir­cuit.

The elec­tri­cal schemat­ics are read from left to right or from top to bot­tom.

The sig­nal di­rec­tion in­di­cates the flow of cur­rent in the cir­cuit. It is then easy for a user to un­der­stand when there is a change in the course of the cir­cuit.

When it comes to the cor­re­la­tion to the real cir­cuit parts, re­fer to the ma­te­rial to un­der­stand the ac­tual val­ues of the ca­pac­i­tors as well the re­sis­tors. It is also rec­om­mended to con­sult the man­u­fac­turer’s man­ual for any elec­tri­cal de­vice. It will help you know the ac­tual value in any ac­tive de­vice.

A num­ber of va­ri­eties of schematic sym­bols ex­ist for rep­re­sent­ing real de­vices or wires in a cir­cuit. The ex­per­tise to un­der­stand these di­a­grams and be able to read them is key, as wrong read­ing re­sults in wrong in­ter­pre­ta­tion.

Straight lines rep­re­sent wires; the wires are used to con­nect dif­fer­ent pe­riph­er­als in a cir­cuit. This may in­clude bulbs, switches, etc.

A tri­an­gle rep­re­sents ground

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