AC Duty?

Please state the context in which these undefined acronyms are used.

tel in detail abt all

Please state the context in which these undefined acronyms are used.

i came to c that for selecting a contactor,the rating of contactor can be selected depends on the duty it perform

for example

for lighting ac1 duty we prefer because of resistive load

IIIrlly wat are the characterstics of other duties

....this duties has major part...