AS/NZS 3000:2018
I1
Protective device ratings for imperial cables in alterations and repairs
The imperial cable tool reads the protective device rating Table I1 allows for an old imperial conductor, by wire count and wire diameter, installation method, insulation temperature rating and device type. The table is for alteration and repair work.
Verified: read against the printed standard, pages 540–541. Checked 26 Sept 2026.
Units: Rating A, Diameter in in
These are the values AmpSize encodes. No text of the standard is reproduced. Verify against the current standard.
14 rows
| Size | Wires | Diameter in | Method | V 75 cb | V 75 fuse | V 60 cb | V 60 fuse |
|---|---|---|---|---|---|---|---|
| 1/.044 | 1 | 0.044 | unenclosed | 13 | 10 | 10 | 8 |
| 1/.044 | 1 | 0.044 | partially-surrounded | 10 | 8 | 8 | 6 |
| 3/.029 | 3 | 0.029 | unenclosed | 16 | 12 | 13 | 10 |
| 3/.029 | 3 | 0.029 | partially-surrounded | 13 | 8 | 10 | 6 |
| 3/.036 | 3 | 0.036 | unenclosed | 20 | 16 | 16 | 10 |
| 3/.036 | 3 | 0.036 | partially-surrounded | 16 | 10 | 10 | 8 |
| 1/.064 | 1 | 0.064 | unenclosed | 20 | 16 | 16 | 12 |
| 1/.064 | 1 | 0.064 | partially-surrounded | 16 | 10 | 13 | 8 |
| 7/.029 | 7 | 0.029 | unenclosed | 32 | 20 | 25 | 16 |
| 7/.029 | 7 | 0.029 | partially-surrounded | 20 | 16 | 16 | 12 |
| 7/.036 | 7 | 0.036 | unenclosed | 40 | 25 | 32 | 20 |
| 7/.036 | 7 | 0.036 | partially-surrounded | 25 | 20 | 20 | 16 |
| 7/.044 | 7 | 0.044 | unenclosed | 50 | 32 | 40 | 25 |
| 7/.044 | 7 | 0.044 | partially-surrounded | 32 | 25 | 25 | 20 |