EV and maximum demand
How to carry EV charger load rows into Australian maximum-demand and switchboard-capacity worksheets without double counting.
Demand workflow purpose
EV charger load planning is only one row in a wider demand record. The maximum-demand worksheet needs the EV row, other loads, phase context and project assumptions together.
The point is traceability, not automatic supply-capacity approval.
Workflow
- Use the EV charger load calculator to prepare the charger row.
- Add the row to the switchboard or installation load schedule once.
- Record any load-management or diversity basis beside the EV row.
- Run the maximum-demand worksheet with all relevant loads.
- Review switchboard, phase, DNSP and project constraints separately.
Demand record table
| Field | Record | Review concern |
|---|---|---|
| EV load row | Planning current from EV calculator | Avoid duplicate entry |
| Load-management source | Charger setting, controller or project basis | Controls the planning factor |
| Switchboard context | Existing board or new design | Capacity review is broader than EV |
| Phase allocation | Phase or phases used by charger | Single-phase load can affect balance |
| DNSP context | Network or supply condition | May affect project review |
Boundaries
- Do not use EV row current as a full maximum-demand result.
- Do not count the same charger twice.
- Do not hide load-management assumptions.
- Do not treat maximum-demand output as a supply upgrade decision by itself.
EV and maximum demand in Australian work
Show how an EV charger load row should move into maximum-demand review while keeping assumptions and load-management records visible. The useful record is not just the final number or definition; it is the combination of the entered value, the supply arrangement, the equipment or circuit reference and the decision that still needs project review.
EV charger maximum demand workflow for Australian switchboard load records Keep the wording in Australian English, use metric units, and treat 230/400 V a.c. at 50 Hz as the ordinary low-voltage context unless the project information states a different value.
Checks that belong beside this page
- Regional scopeAustralia; Australian English; DNSP conditions, charger settings, switchboard condition, local authority and current standards source documents can override worksheet assumptions.
- Standards contextAS/NZS 3000 maximum-demand context noted for project review; current standards, local authority, DNSP and manufacturer requirements remain controlling inputs.
- Review timingReview cadence: Annual or when EV charger fields, maximum-demand fields, load-management wording or Australian standards context changes.. Update trigger: Calculator formula change, load-schedule field change, EV load-management boundary update, standards context update or project feedback.
Practical use sequence
For EV and maximum demand, begin with the circuit, board, load, cable route, equipment item or measurement record named by this topic. Record the value basis, such as current, voltage, kW, kVA, route length, test value, product rating, tariff value or worksheet field, then note the review boundary so another person can see what this page explained and what still needs a project decision.
The strongest EV and maximum demand record is specific enough to be reviewed later. It names the Australian context, keeps the entered assumptions visible, separates calculation support from compliance decisions and shows where a calculator, table, chart or term definition should be opened next.
Record detail to capture
Keep the EV and maximum demand note attached to Australia; Australian English; DNSP conditions, charger settings, switchboard condition, local authority and current standards source documents can override worksheet assumptions.. When the page is used during design, estimating, testing, review or study work, write the entered assumption, the source that supplied it, the circuit or equipment label and the person or role that must review the following action.
For EV and maximum demand, the review cadence is Annual or when EV charger fields, maximum-demand fields, load-management wording or Australian standards context changes. and the update trigger is Calculator formula change, load-schedule field change, EV load-management boundary update, standards context update or project feedback.. If the topic connects to Maximum demand, open that page after the current definition, input basis or boundary has been recorded, so the next calculation inherits the right Australian context.
A complete EV and maximum demand record leaves four facts visible: why the page was opened, which Australian supply or equipment context applies, which value remains user-entered and what later change would alter the result. That makes the page useful as a working note instead of a loose reference copied away from the project evidence.
- InputsWrite down the entered values and their units before comparing results across calculators or reference pages.
- LocationKeep the value tied to the board, circuit, cable run, equipment terminal, supply point or worksheet row it describes.
- Authority checkCompare the record with current Australian requirements, DNSP or local authority conditions and product information.
- Review trailRetain the date, edition context and reason for the calculation so later changes can be traced.
Connected AUWiring pages
Use the related pages for EV and maximum demand when the topic needs a calculator input, lookup table, formula chart or supporting term before the project record is complete. Open Maximum demand first when that page owns the next value or definition.
- Maximum demandCarry EV and other load rows into a whole-board worksheet.
- EV charger loadPrepare the EV charger row first.
- Phase balancingReview phase spread where single-phase EV load matters.
- Switchboard load schedule fieldsKeep load rows organised.