elements

[sawman]

how many watts would you guys recamend for a oven 30" wide 40" deep 7' tall with 2" of insulation?

thanks
Ed

[nuttyman]

10 -15 kW would suffice

[ed_denu]

You might try this calculator previously posted:

Temperature Time to Rise Calculator

[BottleFed70]

Originally Posted by ed_denu

You might try this calculator previously posted:

Temperature Time to Rise Calculator

x2

I think the estimate of 10-15Kw is a little high. I'd look in the 8-10kw range, but use the calculator......

[outcastzeroone]

anyone care to run to see what size i would need for a 5x2x2 oven. I run mac and excel wont run on my OS.

[ed_denu]

Originally Posted by outcastzeroone

anyone care to run to see what size i would need for a 5x2x2 oven. I run mac and excel wont run on my OS.

I can but you need to supply a couple of parameters:

starting temperature
target temperature
element watts

program returns heat-up time based on these variables.

Example for a 2x2x5 oven, starting at 80 degrees and heating to 400 with 5170 watts(23 amps) of heating elements takes 10 minutes and 19 secs to reach 400.

If you increase the element size to 10000 watts(42 amps) it would reduce the heat up time to 5 min 20 secs.

[nuttyman]

10-15kW isn't too high. it would enable that size oven to reach cure temp twice as fast as a 7.5kw oven which would also work, albeit with a little more complicated wiring scheme.