Schuko vs Wieland connection
By Priya Nair · Last reviewed Schuko is the standard continental European household plug; Wieland is a dedicated, shrouded energy socket installed by an electrician specifically for feed-in devices. German practice allows qualifying balcony systems on Schuko up to 800 W, while Wieland connections are recommended — and sometimes required by landlords or utilities — especially at higher outputs.
Why it matters
The Schuko-vs-Wieland question captures the entire regulatory philosophy of plug-in solar: how much output can safely share an ordinary socket. Above 800 W (as with high-output systems in 2,500 W modes), the answer stops being an ordinary plug — a pattern US and UK rules are now working through in their own terms.