you should put 'an' before electric because the first letter of the next word is a vowel
An or the
No.
No.
you should do it about 15-30 seconds before you turn
Yes, you should put a comma before "as" when it is used as a conjunction in a sentence.
put your goggles on
before
You should put a comma before a person name if you're talking directly to them. ex- Please come here,Lily.
before.
put a condom on :)
I am pretty sure you should brush the bottom before you put in the chlorine, but you should check with another source because I am not positive.