7kW vs 22kW Tesla Charging — Which Home Cable Do You Need? (Australia 2026)
Charging your Tesla at home in Australia comes down to one question: 7kW or 22kW? Get it right and you'll never think about charging again. Get it wrong and you've either overspent or you're waiting longer than you need to. Here's the straight answer — no fluff.
The 30-second answer
- Most Australian homes have single-phase power — so a 7kW Type 2 cable is all you need. Full charge overnight.
- If your home has three-phase power, a 22kW Type 2 cable charges up to ~3x faster.
That's the whole decision. The rest of this guide explains how to know which one you've got and what to expect.
What 7kW and 22kW actually mean
The number is the charging speed — how fast power flows into your battery.
| Cable | Power | Range added/hour | Model Y full charge |
|---|---|---|---|
| 7kW Type 2 (single-phase) | 7.4 kW | ~40 km/hr | ~10–12 hours |
| 22kW Type 2 (three-phase) | up to 22 kW* | ~75–100 km/hr | ~3–4 hours |
*Note: the Tesla Model 3 and Model Y accept up to 11kW on AC, so on three-phase you'll typically draw 11kW — still a big jump over 7kW. The 22kW cable future-proofs you and suits other EVs.
How to tell if your home is single or three-phase
You don't need an electrician to take a first guess:
- Open your switchboard. Look at the main switch at the top. A single wide switch with one toggle = usually single-phase. A switch with three toggles linked together = three-phase.
- Most older and suburban Australian homes are single-phase. Three-phase is more common in newer builds, larger homes, or properties with ducted air-con or a pool.
- When in doubt, ask a licensed electrician — they'll confirm in minutes, and you'll need one to install a wall charger anyway.
Which should you buy?
Buy a 7kW cable if…
- You have single-phase power (most homes).
- You drive normal daily distances and charge overnight.
- You want the most cost-effective option.
Buy a 22kW cable if…
- You have three-phase power.
- You do high daily kilometres and want faster top-ups.
- You want to future-proof for other EVs or a faster wallbox.
🛒 Shop Charging Cables
Type 2 charging cables — 7kW & 22kW, Aus-stocked in Melbourne, fits every Tesla.
✅ Fits all Tesla models — Type 2 (Mennekes) inlet
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Browse Tesla Charging Cables →What about a permanent wall charger?
If you want a tidy, fixed setup rather than a portable cable, a Tesla home charger / wall connector is the premium option — the Gen 3 Tesla Wall Connector delivers up to 11kW on three-phase. You'll still want to confirm your home's phase before installing.
FAQ
- Will a 22kW cable charge my Tesla faster than 7kW even on single-phase?
- No. On single-phase power you're capped around 7.4kW regardless of the cable's rating. The 22kW benefit only applies if your home has three-phase power.
- Can I use a 7kW cable now and upgrade later?
- Yes. Many owners start with a 7kW cable and only move to 22kW if they later get three-phase installed or buy a faster wallbox.
- Do both cables fit all Teslas?
- Yes — all Teslas sold in Australia use the Type 2 (Mennekes) AC inlet, so any standards-compliant Type 2 to Type 2 cable fits.
