Re: use wire use permitted?
No, USE is not permitted inside a building unless it has a dual rating like USE/XHHW. You are permitted to use XHHW inside.
Errata
338.10(B)(4)(b): Revise second paragraph to read:
"Type USE cable shall be installed outside in accordance with the provisions of Article 340. Where Type USE cable emerges from the ground at terminations, it shall be protected in accordance with 300.5(D). Multiconductor service entrance cable shall be permitted to be installed as messenger-supported wiring in accordance with Articles 225 and 396."
This errata has deleted the sentence
"The length of the cable extending indoors to the first termination box shall not exceed 1.8m(6 ft)."