Quote Originally Posted by jantheman View Post
A minor warning........I got one and the v/out was +4.7% of v/in. Not much but when your mains is towards the top of the specified tolerance level, this could push it over. Not saying they are all like that, just that mine is.
What was the rating? 4.7% sounds like it was about 500VA maximum. There is such a thing as transformer regulation & the bigger you go the less this becomes. A typical 3KVA transformer will have a regulation of about 3%, 5KVA maybe 2.5% or less