Loads & backup
Can I run CCTV / NVR / PoE cameras on solar backup in South Africa?
Yes — and you usually should — if the NVR, PoE switch and cameras sit on the essentials board with a realistic watt budget and clean shutdown behaviour. Security loads are classic Stage candidates; geysers and pool pumps are not.
Updated 27 October 2026 · Illustrative ranges — not a formal quote, credit decision or legal advice.
Answer first: Add nameplate watts for NVR + PoE switch + cameras (+ monitor if you leave it on). Confirm the essentials board has headroom beside fridge, lights, router and gate/alarm — essentials · gate / alarm · fibre / router · usable kWh.
Why CCTV belongs on backup
- Stage windows are when premises risk rises.
- Cloud cameras still need local PoE and uplink.
- Reboot storms corrupt recordings if the NVR browns out mid-write.
Sizing sketch
| Item | Ask |
|---|---|
| NVR + disks | Idle vs recording watts |
| PoE switch | Budget at full camera load |
| Cameras | IR night draw is higher |
| Router / ONT | Keep on same board — fibre backup |
Related: Stage 4 · Stage 6 · Stage strategy.
Surge and dirty power
PoE switches dislike hard cuts. Prefer hybrids with clean UPS-like output on essentials; add SPD coordination on the AC side — SPDs · UPS vs hybrid · lightning.
Estate / body-corporate cameras
Shared estate cameras may already sit on estate UPS. Do not double-feed without a documented design — estate / HOA · sectional title.
Commissioning test
- Kill grid; confirm cameras and NVR stay up.
- Check remote app still records during a 30-minute island.
- Photograph board labels for the insurer — insurance.
Watt budget example (illustrative)
Eight PoE cameras at ~5–8 W each, a PoE switch at 20–40 W, and an NVR at 25–60 W can land near 100–150 W continuous — small beside a geyser, material beside a 5 kWh usable pack during Stage 6. Measure your kit; do not trust brochure idle figures — usable kWh · Stage 6 · fridge priority.
Recording integrity
Hard cuts mid-write corrupt databases. Prefer hybrids that present a clean UPS-like essentials output, and test a 30–60 minute island with remote playback afterwards — UPS vs hybrid · solar during shedding.
Uplink dependency
Cloud push still needs the router/ONT. Put networking on the same essentials board as the NVR or accept blind local-only recording during Stage — fibre / router · alarm synergy.
Insurance and disclosure
Some policies ask whether alarms/CCTV remain powered during outages. Answer from your board map, not a guess — insurance · claims · theft.
Quote / CoC lines
- Essentials circuit labelled for NVR/PoE.
- Surge protection noted.
- Measured watts attached to the Stage sizing sheet.
Related: read a quote · DB upgrades · CoC · essentials.
Prioritising security watts against comfort watts
During Stage 6, a 2 kW underfloor heater will erase the pack that could have kept cameras, alarm, fridge and fibre alive overnight. Write the priority list before commissioning, not during the first blackout argument — essentials · Stage 6 · whole-house backup · stove on backup.
PoE switch thermal and placement
PoE switches in sealed cupboards overheat and drop cameras randomly — which looks like “solar failure.” Give them airflow and keep them off heat-generating hybrids’ exhaust path — ventilation · placement · heat.
Cyber hygiene on always-on cameras
- Change default passwords.
- Segment cameras if you know how; at least keep firmware current.
- Do not expose NVRs raw to the internet “for convenience.”
Related: monitoring dongle security habits · router on backup.
Estate shared systems vs freestanding homes
Freestanding homes control their board. Estates may already UPS the street cameras; duplicating feeds without a drawing creates earth loops and blame circles after an incident — estate / HOA · sectional title · apartments.
Worked Stage test script
- Note SoC and enable island.
- Confirm NVR records locally for 30+ minutes.
- Confirm remote notification if uplink is on essentials.
- Restore grid; confirm no stuck contactors.
- File photos with insurance pack — insurance · alarm · CoC.
Integrating with gate and alarm loads
Gate motors surge; alarms sip. Put cameras on the sipping side of the essentials budget and keep gate travel off automatic Stage routines unless security design demands it — gate / alarm · essentials · Stage 4.
Test gate + cameras together once; surge stacking surprises people who only tested cameras alone — overload lessons · trips · UPS vs hybrid.
Storage retention vs watt budget
Higher FPS and continuous recording raise disk and PoE draw. Many homes can drop to motion-triggered profiles during Stage to stretch usable kWh without going blind — confirm your NVR supports a Stage profile before you need it — usable kWh · Stage strategy · monitoring habit.
Label the DB like a future technician lives there
Essentials breakers should read “NVR/PoE”, “ONT/Router”, “Alarm”, “Fridge” — not blank white sticks. Future you at 21:00 during Stage will thank present you — essentials · dual-supply labels · CoC · inspector tips.
Photograph the labelled board into the insurance folder with the Stage test results. Related: insurance · theft · Stage 4 · Stage 6 · fridge.
If a partner proposes putting the plasma TV on essentials “for news during Stage,” trade that watt budget against an extra camera retention day instead — Stage strategy · usable kWh.
Remote family monitoring expectations
Parents who watch a holiday home via cameras need essentials uplink more than a second air-con on backup. Write that preference into the Stage strategy so guests cannot silently move breakers — holiday home · Stage strategy · fibre / router · gate / alarm · guesthouse / Airbnb.
Power budgets for doorbells and Wi-Fi cams
Battery doorbells and Wi-Fi cameras still lean on a PoE injector or charger somewhere. Map every “wireless” device back to a wall wart on the essentials board or accept blind spots during Stage — fibre / router · essentials · Wi-Fi habits.
Doorbell transformers on legacy AC can nuisance-trip sensitive protection; put them on the schedule with the electrician — AFDD context · RCD habits · DB upgrades · CoC.
Closing note for quote season
Price cameras on backup as a deliberate security line, not an afterthought once the hybrid is already undersized. Bring measured watts to every partner meeting — read a quote · usable kWh · Stage 4 · insurance.
Homeowner folder to keep with the CoC
Store the quote annexures, OEM manuals, serial photos, export-limit screenshots and metro reference letters together. When a future technician or buyer inherits the plant, that folder beats scattered WhatsApps — choose installer · selling with solar · warranty transfer.
Re-check fixed charges and tariff codes after any meter change so savings models stay honest — fixed charges · 2026/27 tariffs · metro tariffs hub · bill still high.
Field notes from SA handovers
At commissioning, ask the partner to demonstrate the behaviour described on this page, photograph settings, and confirm NRS-listed SKUs match the invoice. Refuse non-listed gear and export promises that ignore your metro’s live PDF — red flags · NRS list · SSEG · read a quote.
Worked PoE budget sketch
NVR 40 W + 8-port PoE switch 15 W idle + eight cameras at 6 W night IR ≈ 40+15+48 = ~103 W continuous. Over a 2.5 h Stage that is ~0.26 kWh — trivial next to a geyser, but fatal if the PoE switch sits on the non-essential board and dies mid-Stage. Put NVR + PoE + router on essentials together — essentials · fibre backup · Stage 4.
Insurance photo habit
Photograph board labels showing the CCTV circuit on backup. Insurers increasingly ask whether cameras stayed up during Stage; a labelled photo beats a story — insurance · gate / alarm.
Put security loads on essential — measure PoE draw
NVRs and PoE switches are continuous loads. Sum camera + switch + router watts, place them on the backup DB, and verify runtime on battery during a simulated outage. A security system that dies ten minutes into Stage 4 is worse than none — you think you are covered.
Label the PoE switch circuit and keep a spare injectors list in the plant-room folder.
Put this topic’s operating rule on the plant-room card in one sentence. The next Stage 4 night is the wrong time to rediscover tribal knowledge.
Quick questions
Should the living-room TV stay on backup for “security viewing”?
Optional — cameras and NVR matter more than a 100 W screen that drains the pack.
Do wireless cameras need backup?
Their PoE/Wi-Fi hubs and the router still do — budget those watts.
Can I put the NVR on a plug-in UPS as well?
Possible, but avoid double-conversion confusion; one clean essentials design is clearer for CoC.