so this will be my first grow and i need to know about electrical safety. im worried about fires no doubt. i will be useing about 800 watts total including lights fans everything. im in canada my house uses 120volt outlets. i have three power outlets in my room where my grow cabient will be. how much wattage can i put on each outlet? i've been reading the forums about circits and stuff amps and volts and watts, im kind of confused.

Don't know how it is in Canada but in the states, a standard room circuit is ran on a 15 amp breaker with 14 ga wire. Your total load for this circuit should not exceed 80% (12 amps total). If you try to max out your circuits then you are looking at a good possibility of an electrical fire. If you look at the information stickers on all your electrical devices they should show the total amp requirment for each device. If you have more than the allowable amount for 1 circuit then you can try to find another seperate circuit and run an exten cord and run your smaller items such as fans,air pumps,res pumps ect on this one. If you have any friends that are in the electrical trade it is best to run a seperate dedicated circuit for a grow op. Good luck

Keep in mind that all of those outlets are very likely on a single circuit (one breaker or fuse). That means you have to add up the amperage that all three loaded outlets will draw.

Exactly, more than likely they are all on the same breaker, you would need to test to find out 100%. Very easy to do.

But you should be able to run the setup on a single circuit just fine, I would try to keep other devices off of the circuit if you can.

I am going to run a 125amp branch and breaker box to my grow room and I use almost 24amps

Def a dedicated branch with atleast 15-20amps is a def good idea. Copper wire, not aluminum (it melts easier).
12ga, 14 ga is shitty thin like what they use in trailers, it's not good, 10ga is awesome, you wont melt it, it's used in 220 apps alot. Im not a electrician, but I've wired many a homes and they are all still there and never had a problem.

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“trust our government officials and just take the damn vaccine!” - NBC puppet Dr. Nancy Snyderman

The best way is to find the breaker or fuse that powers the circuit you intend to use. Make sure it is off and simply plug in a lamp to all the surounding wall outlets and see which plugs are on that circuit (lamp won't light). Also keep in mind that some of your ceiling lights will be in these circuits also and you have to take their amp load into consideration.

Again the best way is to wire your own branch, that way you know the connection all the way and noone else's half assing will burn your home, plants, and maybe you with it. Trust me loads of homes have half baked wiring and do you want to risk jail, being hurt, or killed to someone else's "skill", especially if you don't even know anything about. Come one. Sry to argue with ya man but your way is the cheap and quick way, sure it might work, but it sure can ruin your day just as easy.
Do it right and keep growing.

__________________
“trust our government officials and just take the damn vaccine!” - NBC puppet Dr. Nancy Snyderman

I totally agree with you all the way around. But if he is just running a 400w and a fan and a cpl pumps he would be fine. I am a firm believer in a seperate and dedicated circuits for a grow op. Mine has a dedicated 240v for lights (4 x 1000w ) and 2 dedicated 120v circuits for all my other accesories like my resv pumps (4) fans(6) air pumps (4) CO2 gen (1) overhead green CFL's for night work (4) and 1 shitty radio/ 8 track tape player (I'm old school). If I didn't use seperate dedicated circuits my house would no doubt be a huge pile of sooty ashes and I would be wearing a bright orande jump suit stamping out license plates for a career. I'm on your side my brudda

sorry to but in but can some one please explane how to start my one thred, im new to this, where do i go from the log on screen?

This was the wrong place for that my new friend, go here and READ http://www.rollitup.org/newbie-central/

Tons of info there.
Welcome to RIU, careful some people are harsh to noobs that don't read anything before they start posting.

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“trust our government officials and just take the damn vaccine!” - NBC puppet Dr. Nancy Snyderman