How big a garden can a corded electric tiller handle?

High-trust community reviewers suggest corded electric tillers are well-matched to roughly 500 square feet up to medium gardens, with the trade-off being cord management and limited reach. One r/lawncare poster noted their corded cultivator was 'fine' for about 500 sq ft but 'not heavy duty.' For large open plots, reviewers favor gas rear-tine machines.