FMC as vibration relief

[IBEW73]

I could use some help. I know FMC is used when raceway is attached to vibrating equipment and is a requirement,but I am unable to find in the NEC which Art. defines or requires it. I have read thru 348,430. Can you point me in the right direction? Thanx

 

[ceb58]

I could use some help. I know FMC is used when raceway is attached to vibrating equipment and is a requirement,but I am unable to find in the NEC which Art. defines or requires it. I have read thru 348,430. Can you point me in the right direction? Thanx

Don't know that it is a true requirement more than an industry standard and workmanship issue. Look at 356.10 (1)

 

[templdl]

Don't know that it is a true requirement more than an industry standard and workmanship issue. Look at 356.10 (1)

Vibration is like heat, how much vibration is like saying something is hot when you explect it to be cool to the touch and it is actually luke warm. You should be refering to the temperature is degrees.
Hense, vibration should also be defined. Otherwise it is a matter if an individual judgement which will be different for each one of us.
As such OP would probably need to use their professional judgement whether they feel FMC is necessary.

 

[petersonra]

To be honest, I prefer the plastic flex to the metallic flex. IME, there are fewer problems with it.

 

[IBEW73]

Thanks for your responses gentelmen, seems that after over 20 yrs in the trade I've confused whats SOP w/ code requirements. Thanks for the help