I'm on the Board of a 152-apartment condo. Outside the garage is a common area where owners can wash their cars. Nearby, there's an electric outlet where owners can plug in a vacuum and clean the inside of their cars at the same time.
Recently, the Building Manager received a complaint that an owner used the electric outlet to recharge the battery on his car. (The complainant implied that this was a crime that should be severely punished.)
I'm trying to figure out approximately how much electricity the owner used. If it really was a large amount of Kwh, then he needs to be billed for the cost. But if the cost was fairly small, perhaps we don't need to be make a big deal about this as the complainants seem to think.
I Googled to get more info on some of the devices that will perform a jump start from an AC outlet. A couple of the ads described the power output as 600 watts. If so, then running the device for an hour would use less than 1 Kwh (kilowatt hour = 1,000 watts for an hour), which costs less than 10 cents.
Does anybody know whether the above estimate is valid? If not, can you suggest a methodology for getting a better estimate of the cost?
Thanks for your help.