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Corded angle grinders deliver consistent power without the drop-off you get from a battery. If you're cutting steel, grinding welds or working through masonry for extended periods a corded model keeps up where cordless units struggle.
Most corded grinders run on 240V and offer motor ratings between 700W and 2800W. Higher wattage means more torque under load which matters when you're pushing a disc through thick metal or hard stone. For light metalwork 900W is often enough. For heavy fabrication or construction work go for 1500W or above.
Disc size is the other key spec. A 115mm grinder is compact and easy to handle. A 230mm grinder covers more surface area but adds weight. The 125mm size hits a useful middle ground for most trade and site use.
Look for features like tool-free guard adjustment soft-start and an anti-vibration handle. These make a real difference on longer jobs. Also check the spindle lock and side handle position - both affect how safely and comfortably you can work.