device to measure electricity usage
Does anyone know of a device we can purchase to add to a home outlet to see how much electricity our RV is using?
My sister-in-law has offered for us to store our RV at her house. She has a regular outlet we can plug in to, if we need to run heater or dehumidifier (if it can be run with that situation). I just would like to know how much we are adding to her bill.
Know its a strange question. She will not randomly take money from us and I just don't want to abuse her kindness.
Thanks for your thoughts.
...Wandering & Wondering....