12F410 Obsolete - 795 AAC 3-over-3 Double Circuit Tangent

Revision 1
May 30, 2012

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 12F400.
  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
I0371 Insulator, 15kV Porcelain Sgl Vertical Post Insulator - 3-3/4" x 4-3/4" Wood Crossarm Mount 5
I0372 Insulator, 15kV Porcelain Sgl Horizontal Post Insulator - Pole Mount 1
I0373 Insulator, 15kV Porcelain Sgl Vertical Post Insulator - Pole Top Mount 1
R1007 Clamp, Line Post 795 - 1272 AAC/ACSR - w/ o Armor 0° - 45° Line Angle 7
R1113 Split Bolt Assembly, Crossarm 5/8" x 6" Machine Bolts 2
X0401 Crossarm, 10' Single 4-Steel Pin Crossarm 2