New Zealand Gazette – 1927 – No. 48

Page 2391

✨ Electrical Supply Regulations Tables

JULY 12.] THE NEW ZEALAND GAZETTE. 2391

(I.) 7/·154 in.

Constants.—Area, 0·1305 sq. in.; diameter, 0·462 in.; loading factor, 4·56;
maximum tension in conductor, 1567 lb.; weight, 0·156 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	Ten.	Sag.
Ft.	lb.	Ft.in.
180	1260	0 6
220	1079	0 10½
260	915	1 5
300	762	2 4
340	641	3 6
380	559	5 0

(J.) 7/·164 in.

Constants.—Area, 0·1477 sq. in.; diameter, 0·492 in.; loading factor, 4·3;
maximum tension in conductor, 1772 lb.; weight, 0·1765 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	Ten.	Sag.
Ft.	lb.	Ft.in.
180	1437	0 6
220	1282	0 10
260	1113	1 4
300	950	2 1
340	808	3 2
380	703	4 6

(K.) 7/·173 in.

Constants.—Area, 0·1643 sq. in.; diameter, 0·519 in.; loading factor, 4·08;
maximum tension in conductor, 1971 lb.; weight, 0·1965 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	Ten.	Sag.
Ft.	lb.	Ft.in.
180	1635	0 5¾
220	1480	0 9½
260	1308	1 3
300	1134	1 11
340	979	2 11
380	856	4 2

TABLE IX.—BARE STEEL-CORED ALUMINIUM.

Wind, 18 lb. per square foot of diametral plane.

Constants.—Coefficient of thermal expansion = 10·55 × 10⁻⁶ per degree Fahrenheit ; modulus of elasticity = 12·5 × 10⁶ lb. per square inch.

NOTE.—This table is for use with wires having a breaking-strength not less than that stated for each size of wire.

(A.) 7/·0586 in.

Constants.—Area, 0·01888 sq. in.; breaking-strength, 820 lb.; diameter,
0·176 in.; loading factor, 9·317; maximum tension in conductor, 328 lb.;
weight, 0·0285 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	Ten.	Sag.
Ft.	lb.	Ft.in.
180	140	0 10
220	83	2 1
260	59	4 1
300	50	6 5
340	45	9 1
380	43	12 0

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VUW Te Waharoa — NZ Gazette 1927, No 48

NZLII — NZ Gazette 1927, No 48

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

✨ LLM interpretation of page content

🏗️ 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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