Load calculator
Single Phase Connections
For any enquiry with a load requirement of less than 80amps, a single phase connection will be provided.
For a single phase, non-electrically heated domestic dwelling with fewer than five bedrooms and no disturbing loads, we will provide an 80amp single phase supply capable of providing up to 18kVA. This will be adequate for all normal lighting and household appliances that work off sockets.
For a single, electrically heated domestic dwelling with fewer than five bedrooms and no disturbing loads, we can provide a 100 amp single phase supply capable of providing up to 23kVA. This will be adequate for all normal lighting and household appliances that work off sockets.
Three Phase Connections
If you require assistance calculating your three phase load requirements, please use the calculator below.
Please be aware that this will give an indication only and will not take into account any diversity that could be applied. If diversity isn’t applied, then you may be requesting and paying for a much larger supply than you actually need.
Adding up the various plant/appliances to be used, will not take into account diversity.
For a more accurate load calculation we advise you to speak to an electrician or electrical contractor. They will advise you on the load requirements based on your usage taking diversity into account.
Load guideline summary
| 80 amp single phase supply | can provide up to 18 kVA |
| 100 amp 3 phase supply | can provide up to 70 kVA |
| CT metering | can provide a max load of 275 kVA at low voltage |
| A supply in excess of 276 kVA | Needs a high voltage solution |
Three phase loads based on normal running voltage of 415 volts
| Amps per phase | kVA | Amps per phase | kVA |
| 20 | 14 | 230 | 165 |
| 30 | 22 | 240 | 173 |
| 40 | 29 | 250 | 180 |
| 50 | 36 | 260 | 187 |
| 60 | 43 | 270 | 194 |
| 70 | 50 | 280 | 201 |
| 80 | 58 | 290 | 208 |
| 90 | 65 | 300 | 216 |
| 100 | 72 | 310 | 223 |
| 110 | 79 | 320 | 230 |
| 120 | 86 | 330 | 237 |
| 130 | 93 | 340 | 244 |
| 140 | 101 | 350 | 252 |
| 150 | 108 | 360 | 259 |
| 160 | 115 | 370 | 266 |
| 170 | 122 | 380 | 273 |
| 180 | 129 | 390 | 280 |
| 190 | 137 | 400 | 288 |
| 200 | 144 | 410 | 295 |
| 210 | 151 | 420 | 302 |
| 220 | 158 |
To help you work out your own load requirements use our online calculation tool.
