# Specification for 15 kV and 25 kV Primary Underground Power Cable
> **Rural Utilities Service** · Final rule. · Published 2012-04-02 · Effective 2012-05-02 · 77 FR 19525
## Document
- **Document number:** 2012-7610
- **Category:** rural-development
- **Sub-agency:** Rural Utilities Service
- **Federal Register citation:** 77 FR 19525
- **CFR reference:** 7 CFR 1728
- **Publication date:** 2012-04-02
- **Effective date:** 2012-05-02
## Abstract

The Rural Utilities Service (RUS) is amending its regulations regarding electric distribution specifications for 15kV and 25 kV primary underground power cable. This rule will rescind Bulletin 50-70 (U-1), "REA Specification for 15 kV and 25 kV Primary Underground Power Cable," and codify the material which was formerly incorporated by reference. The specifications and standards that appeared in the old RUS Bulletin 50-70 (U-1) will be incorporated by reference and will update the specifications for 15kV and 25kV underground power cable, and provide RUS borrowers with specifications for 35 kV underground power cable for use in 25 kV primary systems. These specifications cover single-phase and multi-phase primary underground power cable which RUS electric borrowers use to construct their rural underground electric distribution systems.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/04/02/2012-7610/specification-for-15-kv-and-25-kv-primary-underground-power-cable)
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