Circuit measurement

[asfrye]

I am going to rent a bedroom in a friend's house and he wants me to find out how much electricity I'm using in that room so we can work out payments for the electrical use.

There is only one circuit breaker at the main box that feeds this room.
Can I buy a device that fits in there and measures the electricity I'm using?

 

[ralphhughes]

Yes, most of the landlords use submeter to bill tenants for measured electricity usage.

 

[Don Farrell]

Yes, you can purchase a current transformer meter for about $60. This allows you to route the Hot (Black) through the current transformer and then back to the circuit breaker. Neutral must also be routed through thee current transformer and back to the panelboard. EKM Metering has several products that you can do this with. However, if you are not an experienced electrican I would suggest you hire one. The installation calls for working inside the main panelboard and if not completed correctly it might be very troublesome for you.