Could you please advise which article should be used in the below sentence?
I and my friend are doing an exercise of filling suitable article(s) (a / an / the / no article) into the blank of the sentence:
You should disconnect ____ power before attempting to repair electrical equipment.
Both of us agree that indefinite articles 'a' and 'an' will not be used before uncountable nouns like power in the above sentence. However, we have different views on the other choices.
For me, I don't use any article because
When we refer to general ideas, plurals or uncountable nouns we do not use THE.
and I also showed my friend some example sentences from Google:
This starts in the home, where you should disconnect power before performing any work like replacing a light fixture or an outlet.
My friend disagrees with me. She explains that without definite article "the", the sentence in the exercise means you should disconnect all power, even the power from equipment which you don't repair. This doesn't make sense. That's why she thinks "the" should be filled into the blank to mean that you should disconnect the power which is relevant to the electrical equipment you want to repair. Fortunately, she found the original sentence from Cambridge dictionary:
You should disconnect the power before attempting to repair electrical equipment.