I did a job for a buddy 2 years ago in Chicago where the previous owner of the 2 (3rd added) unit apartment had run power to the garage via 40' of EMT strapped to 'el cheapo' wood panel fencing.
1st good windstorm dropped a panel - and 3 lengths of EMT. He must've scrounged the wires from somewhere, or had a buddy/brother-in-law/cousing who "knew 'lectric stuff". Turns out the whole place is wired in the "rainbow" conductor ID scheme.
Replaced it with a run of rigid 24" underneath the flower beds next to the driveway.
Told him he should upgrade - he's got my number, and polans to re-do everyhting this year.