Electrical Questions

I am in an older 1940s home. I just had a new breaker box put in but not new wiring as they want way too much money... Anyhow I am just curious if I can run everything from a surge protector off of one outlet? I am no electrician I have no clue about wiring or rewiring breakers and what nots. I will be running 400w HPS probably a 8" whats that 740 cfm fan? And a couple of oscalating fans. no clue on the amp/watts there. I think thats it. Could I run a surge protector to the outlet and be fine with this?

I'm not sure what the 8" fan pulls, but your light will pull a bit over 3 amps, assuming 120VAC. (Watts to Amps at fixed voltage is governed by the equation Amps = Watts/Volts). The other fans won't add much to the load. If you don't have any big appliances on that circuit you should be fine. The surge protector won't offer any protection for your house wiring though. What size breaker did they install for that circuit, 15 or 20 amp? Either way, your draw will be much less than that. G/L!

In a 1940's house you could possibly be running with knob and tube wiring system, do your electrical outlets have a ground point or are there just the 2 prongs for hot and neutral? If you have an old knob and tube system with no ground point, installing a surge protector will be useless because there is no ground point for the excess voltage to be routed to. As an electrician I would strongly advise you to upgrade the wiring in that house if it is in fact knob and tube before you set up any type of grow indoors. If it's modern wiring with a ground point (an actual ground inside the receptacle box, if you pull off the receptacle you can see the ground wire attached from the receptacle to the box), then a surge protector will run fine and what you just read is useless information an you can completely disregard it.

I was hoping you'd see this, dusty. Good point about the K&T wiring. OP's house could go either way if it's 1940's construction, although I would expect a pro to mention it to a homeowner. I hope P0w3rGr0wZ gives us an update.

I hooked up the light just to test it and it seems to run fine. I also have my pc and tv hooked up and everything seems to be good. I only ran it for an hour to see how hot it would get and it jumped from 77 to 85 in the closet with no ventilation and fan hooked up yet...
There are no grounds on the plugs its just the 2 prong,but I did install a few newer outlet plugs with the ground on them.

There are ground wires inside the box I dont know if those are what you are talking about though? There is the breakers then the ground wires run off to the side. I think I remember something about the electrician saying it was Modern. They said the wiring still looked good but they would recommend upgrading the wiring as an investment in the house. As of now 5-10k is out of the question for me.

Dude, 400w isnt much. A small fridge consumes more than that, and i'll bet you wouldnt get a new breaker box if you installed one.
If you have reasonably decent wiring in your place, youll be fine.
The main concern is faulty, ripped, exposed sleeves on wiring, which is quite possible in an old house.
Keep your wires off the floor.
12-16 gauge wiring would be adequate for a 400watter.

No worries man a small set up like that.