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Appendices
Reference Sheet
Limits of Knots Size
Length of pole Classes of H6 to 3- 45 ft & shorter
lower half of length 3 in (80mm) upper half of length 5 in (130mm)
- 50 ft & longer lower half of length 4 in (100mm) Upper half of length 6 in (150mm)
DOUGLAS FIR (BOTH TYPES) & SOUTHERN PINE POLESClass H1 1 3
Min circumference at top (in) 29 27 23Length of Pole
(ft)Approx groundline
distance from butt (ft)Min circumference at 6 ft from butt
(ft)40 6 43.5 41 3645 6.5 45.5 43 3750 7 47.5 45 3955 7.5 49.5 46.5 40.560 8 51.0 48 4265 8.5 52.5 49.5 43.570 9 54 51 4575 9.5 55.5 52.5 46
- For distribution poles 55 ft & shorter, the point of maximum bending stress
is usually at or near the ground line and testing showed that those poles are
able to support their Annex B class bending load.
- Fiber stress height effect does not apply to poles that are 55 ft or shorter.
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Bolts & Nuts for Overhead Line Construction
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Wire Specifications
CodewordStock
NoSize Type
No of strands
Overall Dia (IN.)
Weight/1000 (LBS.)
Breaking Str. (LBS)
Dist system: 40C Ambient
Ampacity Max Continuous
Trans system: 35C Ambient
Ampacity Max Continuous
CANNA 1806-034
397.5 KCM
AAC 19 0.724 373 6190 536 N/A
ANAHEIM 1806-013
2/0 . AAAC 7 0.447 146 5707 275 N/A
General Arrangements of Conductors
Single circuit
420.01 - 0-20 Degree Angle Single Phase
421.01 - Staggered Vertical Construction
421.02 - Inverted “T” Construction
Double circuit
470.03 - Double Circuit (24” Fiberglass Brackets)