New Zealand Gazette – 1935 – No. 65

Page 2521

✨ Electrical Conductor Tables

SEPT. 6.] THE NEW ZEALAND GAZETTE. 2521

BARE COPPER—continued.

(E.) 19/·052 in.

Constants.—Area, 0·0403 sq. in.; diameter, 0·260 in.; loading factor, 1·923; maximum tension in conductor, 1,008 lb.; weight, 0·1582 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	0.	20.
	Ten.	Sag.
Ft.	lb.	Ft.in.
120 ..	979 0	3½
140 ..	970 0	4¾
160 ..	958 0	6½
180 ..	946 0	8

(F.) 19/·064 in. (19/16 S.W.G.)

Constants.—Area, 0·0611 sq. in.; diameter, 0·320 in.; loading factor, 1·667; maximum tension in conductor, 1,528 lb.; weight, 0·2400 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	0.	20.
	Ten.	Sag.
Ft.	lb.	Ft.in.
120 ..	1500 0	3½
140 ..	1489 0	4¾
160 ..	1479 0	6¼
180 ..	1466 0	8

TABLE II.—TRIPLE-BRAIDED (H.D.) COPPER.

Wind, 12 lb. per square foot of diametral plane.

Constants.—Coefficient of thermal expansion = 9·45 × 10⁻⁶ per degree Fahrenheit; minimum allowable stress = 25,000 lb. per square inch; modulus of elasticity = 18 × 10⁶ lb. per square inch.

NOTE.—In computing the loading factor for this table the weight and diameter of the covered wire only has been used.

(A.) 7/·044 in.

Constants.—Area (copper), 0·01064 sq. in.; diameter (covered), 0·280 in.; loading factor, 4·19; maximum tension in conductor, 266 lb.; weight of covered conductor, 0·0687 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	0.	20.
	Ten.	Sag.
Ft.	lb.	Ft.in.
120 ..	154 0	9½
140 ..	127 1	4
160 ..	108 2	0
180 ..	96 2	11

(B.) 7/·052 in.

Constants.—Area (copper), 0·01483 sq. in.; diameter (covered), 0·327 in.; loading factor, 3·58; maximum tension in conductor, 371 lb.; weight of covered conductor, 0·0882 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	0.	20.
	Ten.	Sag.
Ft.	lb.	Ft.in.
120 ..	271 0	7
140 ..	241 0	11
160 ..	213 1	4
180 ..	188 1	11

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VUW Te Waharoa — NZ Gazette 1935, No 65

NZLII — NZ Gazette 1935, No 65

Parliament House (depicted) was completed in 1918 and remains the primary seat of Parliament.

✨ LLM interpretation of page content

🏗️ Still-Air Sag and Tension Tables for Electrical Conductors (continued from previous page)

Domain🏗️ Infrastructure & Public Works
KeywordsElectrical Conductors, Sag, Tension, Tables, Engineering

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