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WHITEHOUSE KNOWLEDGE HUB
Expert lighting, electrical and solar advice, practical buying guides and product insights to help South African homes, businesses and projects make confident, informed decisions.
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Clear information designed to help South African homeowners, businesses and trade customers make better product decisions.
a generator, inverter, battery and solar array can complement one another when the inverter explicitly supports generator input and the system is configured correctly. Solar covers...
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workshops, warehouses and factories need a different solar design from homes because motors, compressors, welders, pumps, machinery and three-phase loads can create large starting currents, uneven...
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small-business solar should be designed around downtime cost as well as electricity cost. Keeping POS, card machines, Wi-Fi, CCTV, servers, fridges, lights and key equipment operating...
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solar surge protection needs a coordinated plan across the PV DC side, AC side, earthing and equipment layout. A surge protective device can limit transient overvoltage,...
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there is no universal “correct solar cable size.” Cable thickness depends on the circuit. PV strings can run at hundreds of volts and relatively modest current,...
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a complete solar system needs far more than panels, an inverter and a battery. A professional installation can include mounting rails and clamps, PV cable and...
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A 15-point diagnostic checklist for cooling, lighting, electrical safety, outdoor living and solar readiness before hotter November weather.
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A practical payday priority guide for South African households, with upgrade ideas by budget and a focus on comfort, safety and long-term value.
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A technically conservative guide to surge protection, earth leakage, breakers, voltage protection and outdoor electrical safety during summer storms.
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A practical South African summer electricity guide covering fans, geysers, LED lighting, timers and solar self-consumption.
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A changeover device selects which source is connected to an installation or selected loads. A manual changeover requires a person to switch between sources; an automatic...
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Single-phase and three-phase supplies are different ways of delivering AC power. South Africa’s current NRS 048-2:2025 standard states 230 V phase-to-neutral at low voltage and approximately...
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