Cowlitz County Public Utility District » About » Construction Standards

Construction Standards

Accordion title

Section 1: Guys and Anchors
  • All Section 1 Standards
  • 1-10 – 10M Down Guy
  • 1-20 – 10M Sidewalk Down Guy
  • 1-21 – 25M Sidewalk Down Guy
  • 1-30 – 25M Down Guy
  • 1-40 – 10M Overhead Span Guy
  • 1-50 – 25M Overhead Span Guy
  • 1-60 – Screw Anchors and Attachments
  • 1-70 – Rock Anchor
  • 1-71 – Cross Plate Anchor
  • 1-80 – Pole Push Brace
  • 1-90 – Pole Swamp Shoe
  • 1-100 – Pole Bog Pad
  • 1-110 – 115kV Vertical Strain Insulator Guying Arrangement
Section 2: Transmission Line Construction
  • All Section 2 Standards
  • 2-10 – 115kV Side Post Tangent
  • 2-10DG – Pole Drill Guide
  • 2-10SP – Reduced Spacing
  • 2-11 – 115kV Vertical Post Tangent
  • 2-11DG – Pole Drill Guide
  • 2-12 – 115kV Vertical Post Tangent
  • 2-12DG – Pole Drill Guide
  • 2-20 – 115kV Side Post Light Angle
  • 2-20DG – Pole Drill Guide
  • 2-20SP – Reduced Spacing
  • 2-30 – 115kV Side Post Light Angle Double Circuit
  • 2-30DG – Pole Drill Guide
  • 2-30SP – Reduced Spacing
  • 2-40 – 115kV Vertical Swinging Corner
  • 2-40DG – Pole Drill Guide
  • 2-40SP – Reduced Spacing
  • 2-50 – 115kV Vertical Double Deadend Corner
  • 2-50DG – Pole Drill Guide
  • 2-50SP – Reduced Spacing
  • 2-60 – 115kV Vertical Double Deadend with Side Posts
  • 2-60DG – Pole Drill Guide
  • 2-60SP – Reduced Spacing
  • 2-70 – 115kV Horizontal Double Deadend
  • 2-70DG – Pole Drill Guide
  • 2-80 – 115kV Vertical Deadend
  • 2-80DG – Pole Drill Guide
  • 2-80SP – Reduced Spacing
  • 2-90 – 115kV Ganged Switch
  • 2-90DG – Pole Drill Guide
  • 2-90SP – Reduced Spacing
  • 2-100 – 115kV Suspension H-Structure
  • 2-101 – 115kV Suspension H-Structure w/ Fiberglass Crossarm
  • 2-110 – 115kV 3-Pole Double Deadend Tangent (Insulators Below Crossarms)
  • 2-120 – 115kV 3-Pole Double Double Tangent (Insulators Above Crossarms)
  • 2-130 – 115kV 3-Pole Double Deadend Corner (60-90 Angle)
  • 2-140 – 115kV 3-Pole Double Deadend with Side Posts (60-90 Angle)
  • 2-150 – 115kV Vertical Construction Phase Transposition
  • 2-RSN – Reduced Spacing Notes
Section 3: Three-Phase Primary Line Construction
  • All Section 3 Standards
  • 3-20 – Double Pin Composite Arm (Extra Heavy Duty)
  • 3-21 – Double Pin Composite Arm (Heavy Duty)
  • 3-22 – Double Pin Composite Arm (Tree-Wire)
  • 3-23 – Double Pin 5-11 B on Pole (Extra Heavy Duty)
  • 3-24 – Double Pin 5-11 B on Pole (Heavy Duty)
  • 3-25 – Double Pin 5-11 B on Pole (Tree-Wire)
  • 3-26 – 10FT Double Pin 5-11 B on Pole (Extra Heavy Duty)
  • 3-26A – 10FT Double Pin 5-11 B on Arm(Extra Heavy Duty)
  • 3-27 – 10FT Double Pin 5-11 B on Pole (Heavy Duty)
  • 3-27A – 10FT Double Pin 5-11 B on Arm (Heavy Duty)
  • 3-28 – 10FT Double Pin 5-11 B on Pole (Tree-Wire)
  • 3-28A – 10FT Double Pin 5-11 B on Arm (Tree-Wire)
  • 3-30 – Composite Arm Deadend (Extra Heavy Duty)
  • 3-31 – Composite Arm Deadend (Heavy Duty)
  • 3-32 – Composite Arm Deadend (Tree-Wire)
  • 3-33 – 10FT Composite Arm Deadend (Extra Heavy Duty)
  • 3-34 – 10FT Composite Arm Deadend (Heavy Duty)
  • 3-35 – 10FT Composite Arm Deadend (Tree-Wire)
  • 3-40 – Composite Arm Double Deadend (Extra Heavy Duty)
  • 3-41 – Composite Arm Double Deadend (Heavy Duty)
  • 3-42 – Composite Arm Double Deadend (Tree-Wire)
  • 3-43 – 10FT Composite Arm Double Deadend (Extra Heavy Duty)
  • 3-44 – 10FT Composite Arm Double Deadend (Heavy Duty)
  • 3-45 – 10FT Composite Arm Double Deadend (Tree-Wire)
  • 3-50 – 8FT Composite Buck Deadend (Extra Heavy Duty)
  • 3-51 – 8FT Composite Buck Deadend (Heavy Duty)
  • 3-52 – 8FT Composite Buck Deadend (Tree-Wire)
  • 3-53 – 10FT Composite Buck Deadend (Extra Heavy Duty)
  • 3-54 – 10FT Composite Buck Deadend (Heavy Duty)
  • 3-55 – 10FT Composite Buck Deadend (Tree-Wire)
  • 3-60 – Vertical Corner (Extra Heavy Duty)
  • 3-61 – Vertical Corner (Heavy Duty)
  • 3-70 – Vertical Deadend (Extra Heavy Duty)
  • 3-71 – Vertical Deadend (Heavy Duty)
  • 3-80 – Vertical Double Deadend Corner (Extra Heavy Duty)
  • 3-81 – Vertical Double Deadend Corner (Heavy Duty)
  • 3-90 – Compact Construction In-Line (Extra Heavy Duty)
  • 3-91 – Compact Construction In-Line (Heavy Duty)
  • 3-92 – Compact Construction In-Line (Tree-Wire)
  • 3-100 – Compact Construction Angle 1-5° (Extra Heavy Duty)
  • 3-101 – Compact Construction Angle 3-10° (Heavy Duty)
  • 3-102 – Compact Construction Angle 3-8° (Tree-Wire)
  • 3-110 – Compact Construction Angle 5-8° (Extra Heavy Duty)
  • 3-111 – Compact Construction Angle 10-14° (Heavy Duty)
  • 3-112 – Compact Construction Angle 9-13° (Tree-Wire)
  • 3-120 – Vertical In-line with Post Insulators (Extra Heavy Duty)
  • 3-121 – Vertical In-line with Post Insulators (Heavy Duty)
  • 3-122 – Vertical In-line with Post Insulators (Tree-Wire)
  • 3-130 – Alley Arm Single or Double
  • 3-230 – Pole Mounted Primary Metering
  • 3-240 – Platform Mounted Primary Line Regulators (219kVA and Smaller)
  • 3-241 – Platform Mounted Primary Line Regulators (416kVA)
  • 3-260 – Capacitor Bank 600 kVAR
  • 3-269 – Switched Capacitor Bank 1500 kVAR w/ Floating Neutral
  • 3-270 – 15kV Group Operated 900 Amp Switch
  • 3-270WO – 15kV Group Operated 900 Amp Switch (w/o control arm)
  • 3-320 – Repeater AMI
  • 3-330 – DDE H-FRAME
  • 3-501 – Tangent, 8ft Wood Arm, 0-1°
  • 3-502 – Light Angle, 8ft Wood Arm, 1-5°
  • 3-503 – BOP Tangent, 8ft Wood Arm, 0-1°
  • 3-504 – BOP Light Angle, 8ft Wood Arm, 1-5°
  • 3-505 – Tangent, 10ft Wood Arm, 0-1°
  • 3-506 – Light Angle, 10ft Wood Arm, 1-5°
  • 3-507 – NOA Tangent, 10ft Wood Arm, 0-5°
  • 3-508 – BOP Tangent, 10ft Wood Arm, 0-1°
  • 3-509 – BOP Light Angle, 10ft Wood Arm, 1-5°
  • 3-510 – Tangent, Braceless 8ft Fiberglass Arm, 0-1°
  • 3-511 – Tangent, Braceless 10ft Fiberglass Arm, 0-1°
  • 3-512 – NOA Tangent, Braceless 10ft FG Arm, 0-5°
Section 4: V-Phase Primary Line Construction
  • All Section 4 Standards
  • 4-10 – Single Arm (Heavy Duty)
  • 4-20 – Double Pin Composite Arm (Heavy Duty)
  • 4-30 – Composite Arm Deadend (Heavy Duty)
  • 4-40 – Composite Arm Double Deadend (Heavy Duty)
  • 4-50 – Composite Arm Buck Deadend (Heavy Duty)
  • 4-60 – Vertical Corner (Heavy Duty)
  • 4-70 – Vertical Deadend (Heavy Duty)
  • 4-80 – Vertical Double Deadend Corner (Heavy Duty)
  • 4-90 – V-Phase Vertical Double Deadend (Heavy Duty)
Section 5: Single-Phase Primary Line Construction
  • All Section 5 Standards
  • 5-10 – Single Arm (Heavy Duty – Neutral on Arm)
  • 5-15 – Single PH TW SA 0-5 (Heavy Duty – Neutral on Arm)
  • 5-20 – Double Pin Composite Arm (Heavy Duty – Neutral on Arm)
  • 5-25 – Single PH TW SA 5-11 Double Pin (Heavy Duty – Neutral on Arm)
  • 5-30 – Composite Arm Deadend (Heavy Duty – Neutral on Arm)
  • 5-40 – Composite Arm Double Deadend (Heavy Duty – Neutral on Arm)
  • 5-50 – Composite Arm Deadend Buck (Heavy Duty – Neutral on Arm)
  • 5-60 – Single Pole Top Pin
  • 5-62 – Single PH TW 0-5 Pole Top Pin
  • 5-64 – Single PH 0-3 Single Fiberglass Bracket Underbuild (Trans)
  • 5-70 – Double Pole Top Pin
  • 5-72 – Single PH TW 5-11 Double Pole Top Pin
  • 5-74 – Single PH 4-14 Single Fiberglass Bracket Underbuild (Trans)
  • 5-80 – Vertical Corner (Heavy Duty)
  • 5-90 – Vertical Deadend (Heavy Duty)
  • 5-92 – Single PH Vertical Deadend From Twiggy Arm
  • 5-100 – Vertical Double Deadend (Heavy Duty)
  • 5-102 – Single-Phase Vertical Double Deadend (Tree Wire)
  • 5-110 – Vertical Double Deadend Corner (Heavy Duty)
  • 5-112 – Single PH Vertical Double Deadend (Corner, Tree Wire)
  • 5-120 – Single PH Vertical Double Deadend From Twig Arm
  • 5-150 – Single PH Line Regulator Pole Mounted (219KVA and Smaller)
  • 5-160 – Single PH 25KV Trip Saver (Recloser)
  • 5-170 – Single PH Circuit Protected O/H Transformer
  • 5-180 – Single PH Conventional O/H Transformers
Section 6: Three-Phase Underground Primary
  • All Section 6 Standards
  • 6-10 – 4-Inch Primary Riser
  • 6-20 – 6-Inch Primary Riser
  • 6-40 – 100 Amp Lightning Arrestor/Cutout Combo
  • 6-50 – 900 Amp Hook Operated Switch
  • 6-80 – Three-Phase Primary Pedestal
  • 6-90 – Deadfront Switchgear Vault Lid
  • 6-91 – Deadfront Switchgear Vault Lid 90° Rotated
Section 7: Single-Phase Underground Primary
Section 8: Secondary & Service Entrances
Section 9: OPGW and Fiber Optics
Section 10: Metering Diagrams
  • All Section 10 Standards
  • 10-101 – 100 Amp Single-Phase 2-Wire 120V (Existing Only)
  • 10-102 – 200 Amp Single-Phase 3-Wire 120/240V or 240/480V
  • 10-103 – 320 Amp Single-Phase 3-Wire 120V/240V
  • 10-104 – 200 Amp Single-Phase 3-Wire 120/208V
  • 10-105 – 200 Amp Single-Phase 3-Wire 240/480V
  • 10-106 – 320 Amp Single-Phase 3-Wire Delta 240V or 480 V (Existing Only)
  • 10-107 – 200 Amp Three-Phase 4-Wire Wye 120/208V or 139/240V or 277/480V
  • 10-108 – 200 Amp Three-Phase 4-Wire Delta 120/240V or 240/480V
  • 10-109 – Residential Single-C.T. Single-Phase 3-Wire 120/240V (Existing Only)
  • 10-110 – Commercial Single-C.T. Single-Phase 3-Wire 120/240V (Existing Only)
  • 10-111 – Dual-C.T. Single-Phase 3-Wire 120/240V
  • 10-113 – Commercial C.T. Three-Phase 4-Wire Delta 120/240V
  • 10-114 – Commercial C.T. Three-Phase 4-Wire Wye – 800 Amps Maximum
  • 10-115 – Commercial C.T. Three-Phase 4-Wire Wye – Over 800 Amps
  • 10-116 – Commercial C.T. Three-Phase 3-Wire Delta (Existing Only)
  • 10-117 – Primary Metering Single-Phase 2-Wire 7.2kV Underground
  • 10-118 – Primary Metering Single-Phase 2-Wire 7.2kV Overhead
  • 10-119 – Primary Metering Three-Phase 4-Wire Wye 12.5kV Underground
  • 10-120 – Primary Metering Three-Phase 4-Wire Wye 12.5kV Overhead
  • 10-121 – Primary Metering Three-Phase 3-Wire Delta 12.5kV Overhead (Existing Only)
Section 11: Engineering Practices
Section 12: Materials Standards
  • All Section 12 Standards
  • 12-10 – Class 4 Wood Poles (30 and 35-Ft)
  • 12-20 – Class 2 Wood Poles (40-65 Ft)
  • 12-30 – Class H2 Wood Poles (70 and 120-Ft)
  • 12-40 – 8-Ft Composite Crossarm Light Angle (5-11 Degrees)
  • 12-50 – 8-Ft Composite Double Dead End Crossarm
  • 12-60 – 12-Ft Composite Double Dead End Crossarm
  • 12-70 – Double Pin Insulator Mounting Bracket
  • 12-80 – 8-Ft Wood Heavy Duty Crossarm
  • 12-90 – 8-Ft Wood Extra Heavy Duty Crossarm
  • 12-100 – 10-Ft Wood Distribution Crossarm
  • 12-110 – 10-Ft Composite Light Angle Crossarm
  • 12-120 – 10-Ft Composite DE Crossarm
Section 13: Joint Use Standards
  • All Section 13 Standards
  • 13-01 – Pole Attachments Overhead Minimum Clearances
  • 13-02 – Pole Attachments Grounding Connections
  • 13-03 – Pole Attachments Guy Wire Attachments
  • 13-04 – Pole Attachments Minimum Clearance to Service and Roadway
  • 13-05 – Pole Attachments Minimum Clearance Between Circuits
  • 13-06 – Pole Attachments Climbing Space Requirements
  • 13-07 – Communication Wireless Antenna Attachment Transmission Poles
  • 13-08 – Communication Wireless Antenna Attachment Distribution Poles
  • 13-09 – Communication Wireless Antenna Attachment Guy Stub Poles
  • 13-10 – Pole Attachments PUD Fiber
  • 13-11 – Pole Attachments PUD Fiber (Self Supporting DDE)
  • 13-12 – Pole Attachments PUD Fiber (Self Supporting Drop)
  • 13-50 – PUD ADSS Fiber – Tangent Clamp Attachment
  • 13-52 – PUD ADSS Fiber – Double Deadend (0-30 degree)
  • 13-53 – PUD ADSS Fiber – Double Deadend (30+ degrees)
  • 13-54 – PUD ADSS Fiber – Single Deadend
  • 13-61 – PUD ADSS Fiber – Slack Storage – In Span
  • 13-63 – PUD ADSS Fiber – Splice Closure – In Span
Standards Technical Notices
  • 02/21/2019 – Customer-Owned Risers and Service Wire NESC Violations
  • 06/16/2021 – Transformer Box Pad Use
  • 06/07/2023 – Revisions to O/H Distribution Standards
  • 06/18/2024 – Standard Distribution Pole Sizes
Other Drawings