💡 Why This Matters
Every solar and battery installation requires a dedicated circuit breaker to be added to the customer's switchboard. If there's no space — or if the board has safety hazards — a switchboard upgrade must be quoted as part of the job.
Getting this right on the first site visit avoids surprise costs, project delays, and unhappy customers. This guide teaches you exactly what to look for.
📸 Real-World Example: What You'll See in the Field
Below is a breakdown of an actual switchboard photographed at a customer's home in Australia. This board has multiple red flags that mean a switchboard upgrade is required before a battery can be installed.
Actual customer switchboard — study this photo and match it to the callout cards below
A red "Warning — Contains Asbestos" sticker is visible on the right-hand side of the board. This is the standard Australian asbestos warning label (white "a" on red background). Note this in Pipedrive so the operations team is aware before scheduling any work.
Every single circuit position is occupied: A/C, Stove, P1, P2, L1, P3, Shed, Bore. There is no spare slot available to add a new circuit breaker for the battery. Upgrade required.
The board uses old-style ceramic rewirable fuses (the white rectangular blocks in the top row) instead of modern circuit breakers. These are outdated, non-compliant with current standards, and cannot accept a new MCB for a battery circuit.
Only one safety switch (RCD) is visible, and the label says it only protects "P1, P2, P3, Shed + Bore." The stove and A/C circuits appear unprotected. Modern standards require RCD protection on all circuits.
The brown backing material is visibly rusted and corroded. This indicates age, moisture ingress, and structural deterioration — another indicator the entire board needs replacing.
The main switch (bottom left, labelled "M/N Switch") is an older-style unit. While functional, it's a further sign of the board's age and supports the case for a full upgrade.
🔌 Issue #1: No Spare Circuit Breaker Slots
Why We Need a Spare Slot
A battery installation (and usually solar too) requires at least one dedicated circuit breaker to be added to the switchboard. Some installations need two or more (e.g., separate breakers for solar inverter, battery, backup circuits). If the board is full, there's physically nowhere to put them.
How to Check for Spare Capacity
Open the switchboard cover
If accessible and safe to do so, open the cover to see all the circuit breakers or fuses inside. (Never remove the actual panel covering live components.)
Count the occupied positions
Each circuit breaker or fuse occupies one "pole" or slot on the DIN rail (or fuse holder). Count how many are in use.
Look for blank positions
Spare slots usually have a plastic blanking plate covering an empty DIN rail space. If you see none — or every slot is filled — there is no room.
Note the breaker type
Modern boards use clip-on MCBs (miniature circuit breakers) on a DIN rail. Old boards use ceramic rewirable fuses, which cannot accept a new MCB — the whole board needs upgrading regardless of spare capacity.
🛠️ Quick Decision Flowchart
Use this mental flowchart at every site visit when you look at the switchboard:
📋 Common Scenarios You'll Encounter
| What You See | Upgrade Needed? | Notes |
|---|---|---|
| Asbestos sticker present | Note in Pipedrive | Log it in Pipedrive so the operations team is aware |
| Old ceramic rewirable fuses | Yes — always | Full upgrade $1,500 — cannot add modern MCBs to old fuse boards |
| Modern board, zero spare slots | Yes | Full upgrade $1,500 — need minimum 1–2 spare positions for battery + solar |
| Modern board, 1 spare slot, solar only | Likely no | One spare may be enough for solar — $200 per switch if needed |
| Modern board, 2+ spare slots | No | Good to go — $200 per switch to add circuits |
| Rusted/corroded board | Likely yes | Flag for electrician review — safety concern |
| No safety switches (RCDs) or inadequate coverage | Likely yes | Current regs require RCDs on all circuits; upgrade may be triggered |
| Sub-board present with spare capacity | Maybe no | Electrician may be able to use sub-board — flag it and photograph |
📷 Your Site Visit Photo Checklist
Take these photos at every site visit so the design and electrical teams can confirm whether an upgrade is needed:
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Full switchboard with cover open — showing all breakers/fuses and any labelling
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Close-up of any warning stickers — if you see an asbestos sticker, note it in Pipedrive
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The meter and meter box — noting meter type (digital/analogue) and meter isolator location
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Any visible rust, corrosion, or damage
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Any sub-boards — often found in garages, sheds, or granny flats
💬 How to Talk to the Customer About It
A switchboard upgrade can add cost to the job. Frame it positively — it's a safety and compliance improvement for their home.
When the board is full (no spare slots):
When old ceramic fuses are present:
🚀 Quick Reference Summary
| Red Flag | Action | Priority |
|---|---|---|
| Asbestos warning sticker / suspected asbestos backing | Note in Pipedrive so the operations team is aware. | Flag it |
| Old ceramic rewirable fuses | Quote full switchboard upgrade — $1,500. | Critical |
| No spare circuit breaker positions | Quote full upgrade ($1,500) or per switch ($200 each). | Required |
| Missing or insufficient safety switches (RCDs) | Flag for electrician. Likely requires upgrade to meet regs. | High |
| Rust, corrosion, physical damage | Photograph and flag for electrician review. | Medium |