I know that this is not a forum for personal electrical questions, but I have a really strange situation going on. I took occupancy about three months ago of a small two family home, one unit per floor. No utilities had been active or turned on in the premises for almost a whole year prior, due to the house was unoccupied.

The building has: 

  • 2 Utica Boiler gas boilers (which have been off at the breakers, I didn't use the heat once)
  • 1 40 gallon Bradford White water heater (electric) not currently set to a timer, but exists. 
  • 2 Refrigerators
  • 1 Speed Queen commercial washer
  • 1 Speed Queen commercial dryer 
  • 2 Electricity Fuse Panels
  • 1 Electricity Meter
  • 1 8000BTU window air conditioner was put in, but it was about a week ago and did not exist prior to that. 

In the first month, April, electrical usage was 2373KWH. In the second month, May - it was 3257KWH. And so far for June, it is at 2641KWH of usage, and so if I were to average out what I can expect to see on the next bill it's somewhere around 4,093KWH of use. 

There used to be two electric meters - however the previous owner decided to run the power from the Floor 1 fuse box into Floor 2's fuse box - it's apparently all hooked into a single 50W breaker on the Floor 2 fuse panel. 

I have dropped some cords from Floor 2 down to Floor 1 load from the laundry machines trips the fuse unless I did that. To power like the AC or computer, I use the Floor 2 drops. 

No one is stealing power, I am farily sure of that. And we don't have a lot of things in either unit in terms of tv's etc, nothing that would cause this type of usage pattern. 

I am highly suspect of either an electricity leak somewhere in the connection to the other breaker box, or perhaps the digital meter is going crazy. I need a starting point please. I am having a guy come out to look at it on Saturday, but I am not sure how effective he will be based on the phone call I had. 

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A Thermographer might be good to consult. Electrical use generally results in added heat somewhere. I had a customer call about a similar issue, over 5000 kwh in March for a 1200 sqft house. I did a thermal camera inspection and found that the electric heat coils were always on and the ductwork was over 130°F surface temperature. A new heat coils and they were good to go.
Remember even something like an alarm system uses electricity and generate some amount of heat. Find the heat and find the phantom load.

This is an interesting situation with many suggestions. Are there any updates?

If you do not have tools like amp meter or "kill a watt" or some way of tracking amps or watts.  I have looked at the meter each 12 hr and grafted power useage.  Then find out usage high and lows.    

One job had a 30 amp strip heater in attic so when temp in attic was under 55' the power usage would peak.  the Painter/sheet rocker  left it in attic with new work when house is built.   I was 30 + person to look for extra power useage

My power co will leave an  Electricity Usage Monitor   for a few days and will help read the grade.  My library will loan out kill a watt for 2 weeks.      

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