12F411 Obsolete - 795 AAC 3-over-3 Double Circuit Line Angle
Revision 1
May 30, 2012
Notes:
- 50’ minimum pole height without communication attachments. 60’ minimum pole height with communication attachments.
- Engineer must specify the size & number of down guys and anchors depending on conductor design tension, line angle, available down guy lead and span length. Refer to T&D Guideline 4-6 and Compatible Unit Sections A and G.
- To avoid accidental contact with jumpers, primary down guys must be equipped with 144" fiberglass guy strain insulators (MID 939267). Refer to T&D Guideline 4-6-1.5 for more information on use and placement of guy strain insulators.
- The upper circuit on 3-over-3 double circuit structures is an express feeder. Connect all transformers, risers and 1Ø and 2Ø taps to the lower circuit
- Crossarms to be set to split the angle in the line. Guy should be set in the plane of the crossarm if possible.
- This assembly is intended for 795 kcmil AAC (Arbutus) primary conductor installed with a maximum working tension of no more than 4,000 lb/Ø. For framing conductors with a maximum working tension of 2,500 lb/Ø or less refer to Assembly Unit 12F401.
- New overhead double circuit construction is allowed in rural areas only. Refer to T&D Guideline 4-23-7.0 — Design Practices for Constructing Double Circuit Lines.
| Compatible Unit | Description | Quantity |
|---|---|---|
| I0371 | Insulator, 15kV Porcelain Sgl Vertical Post Insulator - 3-3/4" x 4-3/4" Wood Crossarm Mount | 10 |
| I0372 | Insulator, 15kV Porcelain Sgl Horizontal Post Insulator - Pole Mount | 1 |
| I0374 | Insulator, 15kV Porcelain Dbl Vertical Post Insulator - Pole Top Mount | 1 |
| R1007 | Clamp, Line Post 795 - 1272 AAC/ACSR - w/ o Armor 0° - 45° Line Angle | 13 |
| X0401 | Crossarm, 10' Single 4-Steel Pin Crossarm | 2 |