powdercoat oven 120v?

[welds]

hello, i will be buying a powdercoating setup soon, and want to use a old kitchen oven. however all i have is 120v and most ovens i see are 220v. do they make or are any older models 120v? if that is not possible, what kind of transformer would i need to make a 220v oven work with a 120v power supply? 5000+ watts?

thanks

[Pentawelder]

You are going to need a humongous transformer and it will draw 50 or more amps from your 110 volt supply. Your house wiring isn't up to it. Harbor Freight has an oven that
looks about the right size, probably a quarter of the cost of a transformer.

[welds]

what is most house amps? like 30?
anyway to combine two outlets and increase amps?
i dont want the HF oven b/c it is fairly small, old kitchen ovens are big, big enough to fit a wheel inside.

how about this one?
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7547169910&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1

[halbritt]

While I respect your enthusiasm, I don't believe that you are equipped with enough knowledge to accomplish your stated goal. There is no simple answer to your question other than to say that it's a bit silly and that you should probably revisit your starting point and solicit further opinions about how to accomplish your goal.

What you've listed is a 5000W transformer. Most electric ranges are powered from 50A, 240VAC service which means that you'll need 100A, 120VAC service and atleast an 8400W transformer. Since this is AC, the wattage can be determined by multiplying the volts by the amps and then multiplying the result again by .7 (for single phase only). Common household circuits are rated at 120VAC and 15A or 20A. Other than that, one usually finds 30A, 240VAC circuits for dryers, and 50A 240VAC circuits for electric ranges.

If you're intent on using a common household electric oven, your best solution would be to get an electrician to pull a 240VAC circuit for you, or learn to do it yourself. Just be prepared to destroy the oven once you're done with it, as it will be contaminated with potentially hazardous compounds and you wouldn't want to poison anyone. The likelihood of being able to achieve a decent finish is also suspect as you'll need both convection and a certain amount of exhaust depending on the type of finish desired. Household ovens provide for neither of these features.

Curing ovens are generally made from steel and some sort of insulating material. Other types of ovens are made from insulating fire brick or kaowool. It might be easier just to build something to suit your purposes. If you're only going to be using it a few times, you could build the oven from plywood and coat the inside with a ceramic coating like ITC-100. That, some nichrome wire, and a few fans might yield an interesting setup. If none of this makes sense to you, then some more research on your part is definitely in order.

[welds]

do u have any links to build a oven like that?

[halbritt]

"some more research on your part is definitely in order."

[brokenbones]

i use an electric oven to powder coat, and the finish is second to none. you dont need convection you need radiant heat wich is what these ovens will provide. the only drawback to an oven is the pysical size. ( cant coat big parts) unless you buy heat lamps ($$$$$). What you will need is a little blast cabinent and a big enough air compressor to run it. I would pull some wire before i ran a buck and boost.

[12,000 Doors]

I plan on building myself a powder coating oven eventually. I was going to just get the elements from an oven and stick them in a refrigerator box after double wall insulating it like an oven. I've got so many projects on my list right now though that that one has fallen pretty far down. As for you "Welds", as long as you've got three wires coming into your house you've got the potential to hook up a 220v oven. If your planning on learning the hard way try not to do it while standing in a puddle.

[Madman Stephan]

The ovens run on 220V because they can have multiple heating elements being used at once. If you're just using the lower element of the oven you will be able to get away with just 110V. I'd get a 10 gauge cord, connect it through the fuse, thermostat and oven element and it should work.

What temperature do you need to cook at?