12F416 - 795 AAC 3-over-3 Double Circuit Line Angle Underbuild (Obsolete - See 12F401)

Notes:

1. 50’ minimum pole height without communication attachments. 60’ minimum pole height with communication attachments.
2. 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.
3. 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.
4. 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
5. Crossarms to be set to split the angle in the line. Guy should be set in the plane of the crossarm if possible.
6. 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 12F406.
7. 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.

Material List

Compatible Unit	Description	Quantity
I0387	Insulator, Sgl Polymer Vise-Top Insulator - 5/8" x 6-1/2" Pin Fiberglass Crossarm Mount	12
I0372	Insulator, 15kV Porcelain Sgl Horizontal Post Insulator - Pole Mount	1
R1007	Clamp, Line Post 795 - 1272 AAC/ACSR - w/ o Armor 0° - 45° Line Angle	1
X0301D	Crossarm, 10' Double Fiberglass Tangent 4-Steel Pin Crossarm	2