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Mon 16 Jul, 2018 11:30 am
Which is correct:
Finish plumbing, HVAC, and electrical were completed.
or
Finish plumbing, HVAC and electrical were completed.
@dabbadabba,
If HVAC and electrical are a group, then leave out the comma, otherwise include it to make it clear that they are not a group.
Also, your sentence is not grammatical.