12F404 - 3-over-3 Double Circuit Deadend w/ Buck

Revision 2
Aug 12, 2022

Notes:

  1. 55’ minimum pole height without communication attachments. 65’ 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. 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, 15kV Sgl Polymer Vise-Top Insulator - 5/8" x 6-1/2" Pin Fiberglass Crossarm Mount 8
I0314 Insulator, 15kV DE Porcelain Sgl Insulator w/ 14" Eye Bolt - One-Way Pole Mount DE 2
I0321 Insulator, 15kV Polymer Sgl DE Insulator (Fittings: Clevis-Eye) 12
T030* Clamp, Straight Line Deadend
T0303 - 336.4 kcmil (3/0 - 477 kcmil ACSR, 4/0 - 556 kcmil AAC)

T0304 - 795 kcmil (336.4 - 1113 ACSR, 336.4 - 1200 AAC) 		14
X0212 Crossarm, 10' Deadend 4-Pos. Hvy. Duty 4
Z06** Connector, Wedge
Z0640 - 336.4 - 336.4 kcmil AAC/ACSR
Z0650 - 795 to 795 kcmil AAC/ACSR		 14