6 feet of flexible conduit with no ground

[Steven J Daigle]

250.118(5) b and d
Been doing this for year but fail an inspection today, no ground in pipe because is more then 20 amp circuits in pipe? My flex is only one foot long after I replaced a panel and I though as long as it’s under six feet? As I read I don’t understand 100%. Hoping someone can help…..

 

[infinity]

Take a look at 250.118 and see if your installation complies with a raceway without a wire type EGC.

 

[Dennis Alwon]

Basically it is saying that FMC (flex) can be used as an egc if there circuit is not over 6' and not more than 20 amps. More than 20 amps means you need an equipment grounding conductor

 

[infinity]

LFMC might be a better choice if you don't want to go back and pull and EGC.

 

[MTW]

That’s why I posted the article last week when this question was asked differently. But it depends.
Some replied the fittings couldn’t be sold if they weren’t approved for grounding.

Suggesting LFMC is a similar proposition, not all of it is approved for grounding, back to, ir depends.

What is always approved is to adding the grounding conductor
For the circuit size, it’s also more cost effective, than trying to skate by with less on the first go round.

 

[kwired]

That’s why I posted the article last week when this question was asked differently. But it depends.
Some replied the fittings couldn’t be sold if they weren’t approved for grounding.

Suggesting LFMC is a similar proposition, not all of it is approved for grounding, back to, ir depends.

What is always approved is to adding the grounding conductor
For the circuit size, it’s also more cost effective, than trying to skate by with less on the first go round.

Not all of it is listed. We aren't supposed to use the non listed stuff in the field, but it does get used in listed assemblies quite often. Can replace non listed on those assemblies when they need replaced with same non listed stuff though.

Not all inspectors catch this detail or know there is listed and non listed versions.

 

[infinity]

Suggesting LFMC is a similar proposition, not all of it is approved for grounding, back to, ir depends

But it might be just fine for the installation in the OP since his issue with FMC is the 20 amp limitation. Larger sizes of LFMC have higher ampere ratings than FMC when used as an EGC in 250.118.

 

[letgomywago]

LFMC might be a better choice if you don't want to go back and pull and EGC.

Especially if it's 3/4

 

[MTW]

All of those work arounds could be possible, BUT… none of the details other than length no specifics were even mentioned. I prefer the simple methods, once and done, instead of trying to take the minimalist route. Point being a 6’ piece of wire would have been the cheapest and easiest to pass on the first go round. Sure beats meeting the inspector there to back up your choices and show cut sheets when required, let alone rework and time.

 

[infinity]

All of those work arounds could be possible, BUT… none of the details other than length no specifics were even mentioned. I prefer the simple methods, once and done, instead of trying to take the minimalist route. Point being a 6’ piece of wire would have been the cheapest and easiest to pass on the first go round. Sure beats meeting the inspector there to back up your choices and show cut sheets when required, let alone rework and time.

We're all guessing at this point until the OP fills in the blanks. He never said the run was only 6'. It could be 100' for all we know.

 

[Seven-Delta-FortyOne]

My flex is only one foot long

We're all guessing at this point until the OP fills in the blanks. He never said the run was only 6'. It could be 100' for all we know.

Bro, it a foot. It probably took you longer to post this than pull 3’ of #4.

Yes I pulled #4 out of thin air.

 

[MTW]

My flex is only one foot long

 

[infinity]

Yes the flex that he added is a foot but there's a lot of assumption that the entire length of conduit is short. The OP never mentioned the length of the entire run. So saying that he only needs to add a few feet of EGC may be way off base.

 

[kwired]

In OP it says failed because there is more than 20 amp circuits in there

 

[MTW]

250.118(5) b and d
Been doing this for year but fail an inspection today, no ground in pipe because is more then 20 amp circuits in pipe? My flex is only one foot long after I replaced a panel and I though as long as it’s under six feet? As I read I don’t understand 100%. Hoping someone can help…..

So, Steve, can you tell us what you had to do to get the inspectors blessing?