LFNC when listed for direct burial and limited to 6 ft
LFMC
Does direct burial also mean that it's listed for concrete encasement or are the the same thing?
Does direct burial also mean that it's listed for concrete encasement or are the the same thing?
If you are referencing the LFNC, you are asking the wrong person we need to ask the CMP....
I was basing it on 356.10:
(7) For encasement in concrete where listed for direct burial and installed in compliance with 356.42.
since they listed the concrete (7) as a separate item from direct buried
(4), I assume they are not considered the same.
If you are referencing the LFNC, you are asking the wrong person we need to ask the CMP....
I was basing it on 356.10:
(7) For encasement in concrete where listed for direct burial and installed in compliance with 356.42.
since they listed the concrete (7) as a separate item from direct buried
(4), I assume they are not considered the same.
350.10 Uses Permitted.
LFMC shall be permitted to be used in exposed or concealed locations as follows:
(1) Where conditions of installation, operation, or maintenance require flexibility or protection from liquids, vapors, or solids
(2) As permitted by 501.10(B), 502.10, 503.10, and 504.20 and in other hazardous (classified) locations where specifically approved, and by 553.7(B)
(3) For direct burial where listed and marked for the purpose
I would say yes.Is HDPE considered to be conduit?
Can someone give a good reason to want to use any type of flex conduit in concrete.
A. they cost more than other raceway types except maybe RMC
B. fittings are more expensive than other raceway types.
C. they typically are harder to pull conductors through than other raceway types
D. The flexiblity thing turns pretty rigid once the concrete cures - this may help with C
Can someone give a good reason to want to use any type of flex conduit in concrete.
Zip ties to rebar or stakes.
ENT although fairly flexible is not considered a flexible conduit like FMC or LTFMC, LTFNMC. It also cost less than the other raceways as well as fittings.
Flexible conduits are intended to be able to flex after installed if necessary, ENT is not.