rule of thumb; had a 5 cubic ft. chest type freezer, when we sold it the elec.bill dropped $30 a month:>)
then when setup grow room 1KW HPS @ 240v, 300w tank heater, pump, timers, exhaust and circulation fans.>)
The bill went back up $30 a month @ 12-12; 18-6 runs about $50. Now the latest config includes a full veg room w/ 3 T-5s added $20 a month, and a clone station added another $20 a month. all 3 res's have 300w tank heaters so when all systems are go I figger on $75 a month over normal house usage =>O
Now what was my point?>P O yeah how does the power company know you didn't just buy a 20cuft freezer or an entire workshop full of tools. They seem happier the faster the meter spins!>D