Urgent help: fuse breaker box for dedicated line?

DT. You might try going to a wholesale electrical warehouse where electricians buy their parts from. They might even be able to sell you the box you're looking for and they would be most qualified to answer your questions. Usually in the morning and late afternoon trade people always around.

Are you pulling out of your regular house breaker panel? If so, All you need is a breaker(single pole) of the same brand breakers that are in your box. Using one pole will give you the 120v you desire. Every wire in your house should go back to this breaker panel. If the panel is full(no extra slot) then you have a little bit of a problem. You DO NOT need to install a second disconnect box if you are pulling from your panel. That would be redundant.
You can get single pole breakers of various amperages.
Since you are running a dedicated line, I would run 10/2 Romex.
If you are having a licensed electrician do the actual work, ask him what you need. Also, you may want to get a high grade outlet such as a Wattsgate or Hubbell for your outlet.
By the way---contrary to popular belief, A lot of electricians buy their stuff at Home Depot and Lowes. Both stores offer a "Commercial" sales department and carry a good supply of materials at a reasonable price.

Something sounds wrong here, DT. The "contractor" will do the wiring if you provide the panel? Politely decline - this guy might not be an electrician. Electricians will know exactly what to buy for your requirements and how to legally install. Call in two or three electricians, get a price, labor AND material, and let one do the complete job. Don't concern yourself with voltage ratings, grounding, method of power distribution, etc., - just tell them you want a dedicated circuit from a subpanel. A good electrician will take it from there without even blinking.

Keep a wary eye towards anyone who asks you to buy electrical parts, except, of course, any specialty outlets or wiring. Chances are they won't be licensed or have no standing or credit with supply houses. (Also applies to plumbers, carpenters, etc.)

FYI, honest, well-established contractors will never ask for money up front for materials or "mobilazation" costs. Anyone who does this usually cannot manage their money and will spend your downpayment to finance someone else's job.

Hi,
I just check the fuse breaker box that has two slots for my dedicated lines in my old room to find out that the last electrician use 240V/60A. So, I think that the fuse beaker box that I've looked for at Home Depot is fine(240V/60A/with 3 slots). I'll shop around to find a fuse breaker box with 4 or more slots because I need al least one or two extra outlets.
The guy who do the job for me is a general contractor. He's expert in building thing but not in electrical stuffs. However, it'll cost me $400-$500 if I call the last electrician, and the price to build the room include everything. I think the job is not hard for him because he just copy the old one. Actualy, I can do the job but I don't want to do it in case something happen he has licensce and I don't.
Thanks for all your helps!
Ps: How's about the JPS AC wire? Is it worth to spend extra money?

WC86: A general contractor is NOT a licensed electrician. They are seperate training, testing, and certification processes. It seems both the general contractor and you are struggling with the proper equipment to specify/supply. Please hire a licensed electrician to do a proper installation. In MN, to get final approval on a building permit would require an approved (seperate) electrical permit.