Snoog, ...i normally welcome new visitors to these parts properly...musta missed ya runnin in. Anyhow , would like to offer you a big warm welcome to the "Mag". The people around these parts are very genuine and will offer help and guidance at every chance and they do it with integrity and resolve. May i encourage you to visit some of the HB journals and get a feel for the
membership . There are a large number of us growing in soil , using Doc Bud's "kit' as our "go to" method. We are having a lot of fun enjoying multiple runs with outstanding success from the same (re amended) batch of soil. Anyhow Snoog, we only ask a couple lil things of new members ...when you enter our journals, it's wise to smile and leave any ego at the door....do these things and you won't wanna leave , we promise you!
OK now for the power issues. Snoog, you have loads of room on a circuit bud. You could easily run three of those and still be able to run all that other stuff. Those other things draw very little , actually. The fan/filter will/should draw very little , like 1-2 amps , same with the circ. fans . The problems usually start when growers wanna throw a space heater in the mix.....bad idea! They usually need a designated circuit to avoid "tripping" issues. More fires are caused by them in the colder , drier months than anything else. I have one i use , and it's "on" all the time , utilizing it's own t, stat , but it has two built in switches where i can turn on one,...750 Watt element , or both , making it draw the max. I only EVER use one (750W) element. With any 120 volt space heater, which is 1500 Watts . Just divide 120 into 1500...it's 12.5 Amps. That's why all heaters will only ever say 1500 watts and no more , cuz they have to "come in" at under 13 amps to make them legal in most countries.
OK now , im glad you touched on the 120 and 240 volt thing too! You will notice that the amperage is about 1/2 the amount when it's 240 volts right??? remember though that if it's 240 , you will still use the SAME amount of electricity. Don't be fooled ...OK...instead of only drawing from one "main" coming into the house ,...your now drawing from two , doubling that figure....GOT IT! 240 is run to areas for convenience of balancing out both phases OK, or to a pc. of equipment that is 240 volts. Clear as mud? Anyhow , i'm bookin it outta here...hope this has helped out .