Step-up transformer Wattage?
Step-up transformer Wattage?
(OP)
I bought a 110v wall-mounted AC which I plan to use overseas where (mostly) only 220-v sources are available. The box says 5200 BTU rating. It also says the eff. is 9.7 What minimum transformer wattage do I need? Please show calc. Thanks.
joromer
joromer





RE: Step-up transformer Wattage?
Take the maximum current and mutiply by 120. Now increase that number by about 15%. That will give a rough guide to a minimum transformer size.
But as noted in some recent threads, if your A/C unit is designed for 60 Hz, don't expect it to work properly on 50 Hz, since motor speeds will be reduced.