This electric water heater was in a closet in the garage adjacent to the electrical panel. It appears due to the close proximity of the disconnect at the service panel, no local disconnect has been utilized.
My doubts are regarding whether or not it is appropriate to run conduit through a wall like this, and if it matters depending on the type of conduit used.
Looks like LFNC which is permitted to be concealed in walls. A disconnecting means is required unless the branch circuit breaker is within sight and 50’ or less from the HWH. A breaker lockout device would also be permitted in lieu of the disconnecting means.
Good question, I cannot think of one off the top of my head. There are some like surface metal raceways ( Wiremold) and metallic and non-metallic wireways that prohibit a coupling within the wall. For those type of raceways only unbroken sections can be in the wall.
230.3 Pass Through a Building or Structure
Service conductors cannot pass through the interior of another building or other structure.
230.6 Conductors Considered Outside a Building. Conductors are considered outside a building when they are installed:
(1) Under not less than 2 in. of concrete beneath a building or structure.
(2) Within a building or structure in a raceway that is encased in no less than 2 in. thick of concrete or brick.
(3) Installed in a vault that meets the construction requirements of Article 450, Part III.
(4) In conduit under not less than 18 in. of earth beneath a building or structure.
Equipment Disconnect required within >< 9’ of service equipment, 50 feet visual.
Are those black iron pipe fittings they used on the cold inlets to the water heater and expansion tank?
After a closer look: they might be brass. But there appears to be a leak in progress anyway. Never a dull moment.