I am in the process of building an energy monitor, following the instructions from this website,http://openenergymonitor.org/emon/node/56. What I am confused about is the process of measuring the voltage. He put an ac-ac adapter into an outlet (this is not what is shown in the website) that was available by his circuit breaker. But it seems to me that this would only measure the components that are on that circuit and not the voltage for the whole house. From what I understand, appliances like air conditioners are on their own circuit and so these would definitely not be measured by the voltage circuit?
Also, I am trying to understand residential wiring in general does anyone know of a good resource?
Thanks.
Also, I am trying to understand residential wiring in general does anyone know of a good resource?
Thanks.