LED troffer grounding

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smoky

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akron, ohio, united states
a contractor installed LED troffers. they ran 277 and a N through FMC but didn't run a ground wire. when the contractor was asked why there is no ground, they said the ground isn't necessary because the lights are LED.

this is in an industrial facility. i'm only mentioning that because they also didn't install the luminaries disconnect in the fixture's stuffing box. when i researched if the disconnects are to be there, the code appears to exempt industrial buildings.
 
348.60 Grounding and Bonding. If used to connect equipment
where flexibility is necessary to minimize the transmission
of vibration from equipment or to provide flexibility for equipment
that requires movement after installation, an equipment
grounding conductor shall be installed.

Where flexibility is not required after installation, FMC shall
be permitted to be used as an equipment grounding conductor
when installed in accordance with 250.118(5).

250.118 Types of Equipment Grounding Conductors. The
equipment grounding conductor run with or enclosing the
circuit conductors shall be one or more or a combination of
the following:

(5) Listed flexible metal conduit meeting all the following
conditions:
a. The conduit is terminated in listed fittings.
b. The circuit conductors contained in the conduit are
protected by overcurrent devices rated at 20 amperes
or less.
c. The size of the conduit does not exceed metric designator
35 (trade size 1-1∕4).
d. The combined length of flexible metal conduit and
flexible metallic tubing and liquidtight flexible metal
conduit in the same ground-fault current path does
not exceed 1.8 m (6 ft).
e. If used to connect equipment where flexibility is
necessary to minimize the transmission of vibration
from equipment or to provide flexibility for equipment
that requires movement after installation, an
equipment grounding conductor shall be installed.
Click to expand...
 
The lights being LED have nothing to do with a requirement to have an EGC, however, FMC is permitted to be an EGC in some cases, so a wire type one may not be required by the code.
 
As long as there is not more than 6' of FMC in the ground return path and flexibility is not required after installation then an EGC may not be required. As Don said the LED part is rubbish.
 
A lot of LED lay in fixtures are all plastic now, so that may be their reasoning for not running a ground, but I wonder if double insulated would be a requirement just like power tools. Without the fixture model, I’m just guessing here.
 
hillbilly1 said:
A lot of LED lay in fixtures are all plastic now, so that may be their reasoning for not running a ground, but I wonder if double insulated would be a requirement just like power tools. Without the fixture model, I’m just guessing here.
Click to expand...
Are there LED drivers that do not need to be connected to an EGC?
 
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