✨ Electrical Conductor Standards
SEPT. 6.] THE NEW ZEALAND GAZETTE. 2565
TABLE II.—COMPARISON BETWEEN THE OLD STANDARD SIZES OF CON-
DUCTORS AND THE NEW STANDARD SIZES SET OUT IN B.S.S. No. 7.
| New Standard. | Old Standard. | ||
|---|---|---|---|
| Number and Diameter (Inches) of Wires comprising Conductor. | New Nominal Area. | Number and Gauge or Diameter (Inches) of Wires comprising Conductor. | Old Nominal Area. |
| 1. | 2. | 3. | 4. |
| Sq. in. | Sq. in. | ||
| 1/·036 | 0·001 | 1/20 S.W.G. | 0·001 |
| 1/·044 | 0·0015 | — | — |
| — | — | 1/18 ” | 0·0018 |
| 3/·029 | 0·002 | 3/22 ” | 0·0018 |
| — | — | — | — |
| 3/·036 | 0·003 | 7/25 ” | 0·0022 |
| — | — | 3/20 ” | 0·003 |
| 1/·064 | 0·003 | 7/23 ” | 0·0031 |
| — | — | 1/16 ” | 0·0032 |
| 7/·029 | 0·0045 | 7/22 ” | 0·0042 |
| — | — | — | — |
| 7/·036 | 0·007 | 7/21¼ ” | 0·0049 |
| — | — | 7/20 ” | 0·007 |
| 7/·044 | 0·01 | 7/19 ” | 0·0086 |
| — | — | — | — |
| 7/·052 | 0·0145 | 7/18 ” | 0·0125 |
| — | — | — | — |
| 7/·064 | 0·0225 | 7/17 ” | 0·017 |
| 19/·044 | 0·03 | 7/16 ” | 0·022 |
| — | — | — | — |
| 19/·052 | 0·04 | 19/18 ” | 0·034 |
| — | — | 7/14 ” | 0·035 |
| 19/·064 | 0·06 | 19/17 ” | 0·046 |
| 19/·072 | 0·075 | 19/16 ” | 0·06 |
| — | — | 19/15 ” | 0·075 |
| 19/·083 | 0·1 | 19/14 ” | 0·094 |
| 37/·064 | 0·12 | 37/16 ” | 0·117 |
| — | — | 19/13 ” | 0·125 |
| 37/·072 | 0·15 | 37/15 ” | 0·15 |
| — | — | 37/14 ” | 0·182 |
| 37/·083 | 0·2 | 37/·083 in. | 0·2 |
| 37/·093 | 0·25 | 37/·092 ” | 0·25 |
| 37/·103 | 0·3 | 37/·104 ” | 0·3 |
| 61/·093 | 0·4 | 61/·092 ” | 0·4 |
| 61/·103 | 0·5 | 61/·104 ” | 0·5 |
| 91/·093 | 0·6 | 61/·112 ” | 0·6 |
| 91/·103 | 0·75 | 91/·101 ” | 0·75 |
| 127/·093 | 0·85 | — | — |
| 127/·103 | 1·0 | 127/·101 ,, | 1·0 |
TABLE III.—FLEXIBLE CABLES. DIMENSIONS AND RESISTANCE OF
CONDUCTORS.
(Standard Annealed Copper.)
| Number and Diameter of Wires comprising Conductor. | Resistance per 1,000 Yards at 60° F. | ||||||
|---|---|---|---|---|---|---|---|
| Diameter 0·010 in. | Diameter 0·012 in. | Diameter 0·018 in. | Diameter 0·029 in. | Nominal Area. | Standard. | Maximum allowable for Plain Wires. | Maximum allowable for Tinned Wires. |
| 1. | 2. | 3. | 4. | 5. | 6. | 7. | 8. |
| Sq. in. | Ohms. | Ohms. | Ohms. | ||||
| 140 | 97* | — | — | 0·01 | 2·29 | 2·34 | 2·39 |
| 195 | — | 60* | — | 0·0145 | 1·64 | 1·68 | 1·71 |
| 296 | — | 91* | — | 0·0225 | 1·08 | 1·11 | 1·13 |
| — | 266 | 117* | — | 0·03 | 0·847 | 0·864 | 0·881 |
| — | 368 | 163* | — | 0·04 | 0·606 | 0·618 | 0·631 |
| — | 557 | 248* | — | 0·06 | 0·400 | 0·408 | 0·416 |
| — | 705 | 313 | 121* | 0·075 | 0·316 | 0·323 | 0·329 |
| — | — | 416 | 160* | 0·1 | 0·238 | 0·243 | 0·247 |
| — | — | 482 | 186* | 0·12 | 0·206 | 0·210 | 0·214 |
| — | — | 610 | 235* | 0·15 | 0·163 | 0·166 | 0·169 |
| — | — | 810 | 312* | 0·2 | 0·122 | 0·125 | 0·127 |
| — | — | 1,017 | 392* | 0·25 | 0·0974 | 0·0993 | 0·101 |
| — | — | — | 481 | 0·3 | 0·0794 | 0·0810 | 0·0826 |
| — | — | — | 646 | 0·4 | 0·0591 | 0·0603 | 0·0614 |
| — | — | — | 792 | 0·5 | 0·0482 | 0·0491 | 0·0501 |
- For trailing-cables and similar purposes.
G
Next Page →
PDF embedding disabled (Crown copyright)
View this page online at:
VUW Te Waharoa —
NZ Gazette 1935, No 65
NZLII — 🌐 NZ Gazette 1935, No 65
✨ LLM interpretation of page content
🏗️
Comparison of Old and New Standard Sizes of Conductors
(continued from previous page)
🏗️ Infrastructure & Public WorksElectrical Conductors, Standards, Dimensions, Resistance, Comparison
🏗️ Flexible Cables: Dimensions and Resistance of Conductors
🏗️ Infrastructure & Public WorksFlexible Cables, Conductors, Dimensions, Resistance, Standards