New Zealand Gazette – 1927 – No. 48

Page 2381

✨ Electrical Supply Regulations Tables

JULY 12.] THE NEW ZEALAND GAZETTE. 2381

(H.) 19/·083 in.

Constants.—Area (copper), 0·1028 sq. in.; diameter (covered), 0·663 in.; loading factor, 1·6; maximum tension in conductor, 2570 lb.; weight of covered conductor, 0·533 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	0.	20.
	Ten.	Sag.
Ft.	lb.	Ft. in.
120	2498	0 4½
140	2473	0 6½
160	2445	0 8½
180	2415	0 11

TABLE IV.—BARE ALUMINIUM.

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

Constants.—Coefficient of thermal expansion = 13·3 × 10—⁶ per degree Fahrenheit; maximum allowable stress = 12,000 lb. per square inch; modulus of elasticity = 10 × 10⁶ lb. per square inch.

(A.) 3/·118 in.

Constants.—Area, 0·0328 sq. in.; diameter, 0·236 in.; loading factor, 6·11 maximum tension in conductor, 394 lb.; weight, 0·0392 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	0.	20.
	Ten.	Sag.
Ft.	lb.	Ft. in.
120	324	0 2½
140	300	0 3¾
160	273	0 5½
180	242	0 8

(B.) 3/·132 in.

Constants.—Area, 0·0409 sq. in.; diameter, 0·264 in.; loading factor, 5·5; maximum tension in conductor, 491 lb.; weight, 0·0489 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	O.	20.
	Ten.	Sag.
Ft.	lb.	Ft. in.
120	420	0 2½
140	396	0 3½
160	368	0 5
180	336	0 7

(C.) 3/·144 in.

Constants.—Area, 0·0488 sq. in.; diameter, 0·288 in.; loading factor, 5·04; maximum tension in conductor, 586 lb.; weight, 0·0584 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	0.	20.
	Ten.	Sag.
Ft.	lb.	Ft. in.
120	517	0 2½
140	492	0 3½
160	465	0 4½
180	434	0 6½

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VUW Te Waharoa — NZ Gazette 1927, No 48

NZLII — NZ Gazette 1927, No 48

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🏗️ Electrical Supply Regulations, 1927 (continued) (continued from previous page)

Domain🏗️ Infrastructure & Public Works
KeywordsRegulations, Electrical Supply, Public Works Act, Inspections, Fees, Compliance, Dangerous Lines, Penalties, Tables, Constants, Span, Tension, Sag

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