I don't know much about 'smurf pipe', the flexible blue stuff that has been gaining popularity.

Is this what is desribed in part B of art 351?

Can i use long lengths for direct burial?

If so, what is best LFNC-A,B or C ?

any of you guys familiar with this?

Sparky:

"Smurf Tubing" is what they call Electrical Nonmetallic Tubing covered by Article 331.

It is available in 1/2 through 2 inch sizes and is permitted for certain use. Look carefully at some of the rules, especially for a service per Section 230-43.

Also check 331-4. Thinking attics.

Glenn

Thank you
331-4(5) answers my burial Q