Current calculation for reduced voltage. Home › Electrical Engineering Forum › General Discussion › Current calculation for reduced voltage. This topic has 1 reply, 1 voice, and was last updated 13 years, 7 months ago by admin. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts 2011/04/06 at 9:41 am #10438 adminKeymaster If a motors rated current is 10 amps at 415v, How can i calculate the rated current for the same at 350v. Is it we can covert (415/350)*10. Please confirm 2011/04/09 at 7:28 am #11944 adminKeymaster Yes , take the line voltage 350v in place of 415v Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In