Question

what is arcing and what is it's purpose​

Answer 1

Answer:

Now Required for Most Circuits

When you hear a light switch or outlet buzzing or hissing, you are hearing arcing as it happens. This arcing translates to heat, which can break down the insulation surrounding individual conducting wires, providing the trigger for electrical fires.

Answer 2

Explanation:

$a \: glowing \: light \: across \: a \: gap \: in \: an \: electric \: circuit \: or \: between \: electrodes. \: a \: part \: of \: a \: curved \: line \: between \: any \: two \: points \: on \: it \: is \: called \: arcing. \: The \: contact \: erosion \: they \: cause \: is \: ordinarily \: considered \: as \: part \: of \: the \: arce. \: The \: contact \: erosion \: they \: cause \: is \: ordinarily \: considered \: as \: part \: of \: the \: arc \: erosion. \: Arcing \: Systems. \: For \: our \: purposes \: an \: arc \: will \: be \: defined \: as \: a \: gaseous \: electrical \: discharge \: involving \: electrons, \: metal \: vapours \: and \: ions. \: It \: is \: characterized \: by \: high \:current \: density \: in \: the \: arc \: column \: and \: high \: electrode \: temperatures.$

The contact erosion they cause is ordinarily considered as part of the arc erosion. Arcing Systems. For our purposes an arc will be defined as a gaseous electrical discharge involving electrons, metal vapors and ions. It is characterized by high current density in the arc column and high electrode temperatures.