Just what do you think "industrial" EC work is?
It makes a very real difference as to your expectations, and your abilities.
"Industrial," to me, means you're serving a large operation on an as-needed basis. This often means having a large crew working like mad for a few weeks - then sitting idle for awhile. The customer thinks they 'own' you, and are not the least bit shy about bringing in others. Every clown working for the customer feels a need to 'manage' your operation.
You'll be expected to conform to their schedule- which often means 20-hr shifts and weekend operations. The paperwork hoops can be daunting - for example, you may be required to send each guy for a day of 'safety training' every year.
On the financial side, you can easily be exposed to millions of dollars responsibility for materials - while the customer will often take 100 days to pay. You'll still be expected to bid stuff. You'll do all the legwork 'designing' something, only to see purchasing put it out to bid.
Then there's the matter of scale. Threading pipe, bending large pipe, and pulling big wires is almost routine.