Here's some interesting pics from DIY mess. This is a club with multiple DIYer's
Picture #1 This pic is above the panel in the ceiling, Left pipe is the panel feeders minus a ground wire coming from the MDP on exterior wall. #3 THHN protected by a 200 amp main going into a 100 amp main Right pipe is branch circuit conductors for the electric furnace. All above a drop ceiling:
Picture #2 Recessed light:
Picture #3 Building penetration for outdoor ceiling fans on porch:
Picture #4 Direct bury sealtite:
Picture #5 Light pole branch circuit wiring with missing handhole cover, filled with expansion foam:
Picture #6 Must have been a plumber doing the wiring:
Picture #7 Outdoor recepts, 4 of these along a 15 foot run with a GFCI on the end (picture #8) not protecting the other three.
A lot of sealtite (LTFMC) is actually rated for direct burial or use in poured concrete.
It doesn't *sound* right, and it isn't something that I would ever think of doing (the stuff is hard enough to fish through as it is), but as long as the stuff is marked "direct burial", it is NOT a NEC violation.
Pic #1 is the big stupid, if yoy DIY than you only need YOU_ALL rating.
Pic #2 needs extension ring.
Pic #3 have to get code book for o/s pfl, but I have poked outside that way many times.
Pic #4 depends on the listing of the carflex, and I have always used the DB as support-if you are in the ground before you need support-the earth is support (has never failed on 16 yrs. of inspections).
Pic #5 all pole lights at some point will be held together by black tape and screwlocks sooner or later, shabby but safer than open splice (I always fix them even if it means custom made 4-s blank and tap and dye set.
Pic #6 white fittings are plumbing fittings.
Pic #7 may be high enough to not require gfi.
How many maintenance guys do you know that "used to be" electricians?