truth. don't use elecric heating or leave plugs on over night either. a 600w HPS and medium fan for extracting uses less electricty per hour than my PC and Hi-Fi or Xbox-tv-stereo. my whole house costs around 10quid a week.
Ewww, If you like the taste of mercury and other toxic elements. LED's are far better way to go and don't use rare earth elements like the CFLs. Don't use extension cords on anything, they hog a lot of juice. If you have the option run 240, you can use a dryer outlet (the weird 3 prong looking one). The closer you have your grow light or other heavy load appliances the cheaper the e-bill will be.
i may be a newb to this site but i do know a fair bit about electricty and no effence or nothin but extension cords dont use electricty they are simply a medium that electricty passes through, but do watch out as if they are bundled up they create alot of heat and using 240v is probabbly not the best idea because generally they draw more amperage which will mean higher elctricity bill btu i do agree using LED's as they consume less amperage, and also follow what Brtja said aswell as CFL's consume less amperage, hope this helps
240 uses less amperage but consumes the same amount of power cost wise
Extension cords don't use electricity but the added distance creates energy loss. Plus the wire is rolled a bit differently then normal house wiring and the copper is usually lower grade. Heat = energy loss. 240 uses half the amperage as 120 not more. Of course I still use 'em on low draw appliances and when I need to use the saw or drill but extension cords are not designed for continuous draw.
Really ever experiment with this? 240 will save you money. I save a few bucks a month after I split my lights from 1 line to 2 lines.
