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Transformer sizing

Add up the wattage (VA) of your fixtures, then leave headroom. Kichler’s professional load-sizing page is the method we follow here. This is not a wiring plan, and it is not a substitute for the fixture instructions or a licensed electrician when line voltage is involved.

Many modern integrated LED path and up lights are in the 2–7 watt range. Use the number on your fixture or spec sheet.

Source: $Calculating Your Project Load Size, Kichler Lighting. $Use this as an educational sizing aid, not a wiring plan. Follow the transformer and fixture instructions, and a licensed electrician where line voltage is involved.