Tesla:
Am I missing something? Where is EMT mentioned?
From 2011 NEC 300.4
(E) Cables, Raceways, or Boxes Installed in or Under
Roof Decking. A cable, raceway, or box, installed in exposed
or concealed locations under metal-corrugated sheet
roof decking, shall be installed and supported so there is
not less than 38 mm (11⁄2 in.) measured from the lowest
surface of the roof decking to the top of the cable, raceway,
or box. A cable, raceway, or box shall not be installed in
concealed locations in metal-corrugated, sheet decking–
type roof.
Informational Note: Roof decking material is often repaired
or replaced after the initial raceway or cabling and
roofing installation and may be penetrated by the screws or
other mechanical devices designed to provide “hold down”
strength of the waterproof membrane or roof insulating
material.
Exception: Rigid metal conduit and intermediate metal
conduit shall not be required to comply with 300.4(E).
