✨ Electrical Supply Regulations Tables
JULY 12.] THE NEW ZEALAND GAZETTE. 2385
(F.) 7/·064 in. (7/16 S.W.G.).
Constants.—Area, 0·0225 sq. in.; diameter, 0·192 in.; loading factor, 3·42; maximum tension in conductor, 562 lb.; weight, 0·0885 lb. per foot.
| Span. | Datum. | Degrees Fahrenheit above Datum. |
|---|---|---|
| 0. | 20. | |
| Ten. | Sag. | |
| Ft. | lb. | Ft.in. |
| 180 .. | 425 | 0 10 |
| 220 .. | 371 | 1 5 |
| 260 .. | 319 | 2 4 |
| 300 .. | 276 | 3 7 |
| 340 .. | 248 | 5 2 |
| 380 .. | 228 | 7 0 |
(G.) 19/·052 in.
Constants.—Area, 0·0403 sq. in.; diameter, 0·260 in.; loading factor, 2·66; maximum tension in conductor, 1008 lb.; weight, 0·1582 lb. per foot.
| Span. | Datum. | Degrees Fahrenheit above Datum. |
|---|---|---|
| 0. | 20. | |
| Ten. | Sag. | |
| Ft. | lb. | Ft.in. |
| 180 .. | 869 | 0 9 |
| 220 .. | 807 | 1 2 |
| 260 .. | 743 | 1 10 |
| 300 .. | 679 | 2 7 |
| 340 .. | 622 | 3 8 |
| 380 .. | 575 | 5 0 |
(H.) 19/·064 in. (19/16 S.W.G.).
Constants.—Area, 0·061 sq. in.; diameter, 0·320 in.; loading factor, 2·2; maximum tension in conductor, 1525 lb.; weight, 0·2395 lb. per foot.
| Span. | Datum. | Degrees Fahrenheit above Datum. |
|---|---|---|
| 0. | 20. | |
| Ten. | Sag. | |
| Ft. | lb. | Ft.in. |
| 180 .. | 1392 | 0 8½ |
| 220 .. | 1333 | 1 1 |
| 260 .. | 1266 | 1 7 |
| 300 .. | 1192 | 2 3 |
| 340 .. | 1130 | 3 1 |
| 380 .. | 1067 | 4 1 |
TABLE VI.—TRIPLE BRAIDED (H.D.) COPPER.
Wind, 18 lb. per square foot of diametral plane.
Constants.—Coefficient of thermal expansion = 9·45 × 10⁻⁶ per degree Fahrenheit; maximum allowable stress = 25,000 lb. per square inch; modulus of elasticity = 8 × 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/·036 in. (7/20 S.W.G.).
Constants.—Area (copper), 0·00712 sq. in.; diameter (covered), 0·259 in.; loading factor, 7·64; maximum tension in conductor, 178 lb.; weight of covered conductor, 0·0513 lb. per foot.
| Span. | Datum. | Degrees Fahrenheit above Datum. |
|---|---|---|
| 0. | 20. | |
| Ten. | Sag. | |
| Ft. | lb. | Ft.in. |
| 180 .. | 26 | 8 1 |
| 220 .. | 25 | 12 6 |
| 260 .. | 24 | 17 9 |
| 300 .. | 24 | 24 0 |
| 340 .. | 24 | 31 0 |
| 380 .. | 24 | 38 10 |
Next Page →
PDF embedding disabled (Crown copyright)
View this page online at:
VUW Te Waharoa —
NZ Gazette 1927, No 48
NZLII —
NZ Gazette 1927, No 48
✨ LLM interpretation of page content
🏗️
Electrical Supply Regulations, 1927 (continued)
(continued from previous page)
🏗️ Infrastructure & Public WorksRegulations, Electrical Supply, Public Works Act, Inspections, Fees, Compliance, Dangerous Lines, Penalties, Tables, Constants, Span, Tension, Sag