Element Design.

Well I just got done turning my oven up to 1850 for some D2. I took off for the store to get some dry ice and it was reading 1830 about 20 min after I started it. Came back from the store and it was 1250 and going down. One element broke where it was connected to rear post. Both were sagging out of slots in a couuple places. I can fix it. But, It is time to order some 14 gauge wire I think. Jim
 
I ordered 50 ft. of 14 gauge from Pelican, With shipping and hadling it will be $60 for 3 day delivery to the door. They nick you $10 for handling. It will take all 50 ft to keep me around 20 amps. I have a 40 Amp SSR. But, at 20 amps I should heat up very fast and my elements should last a long time. I am going to go with 5/8" coils. This is all your fault if we had never started talking about ovens and elements mine would never have burned out. Lol

JT, I reread this whole thing and see what I missed You are going to run 2 elements a 15 amps of 220. Don't know why that couldn't get in my head. I will say it will be difficult to get that much wire in that much area. Coils can not touch and need room between them. I used all my room up with 1/2 the wire. That is why I am going heavier wire. 50 ft of 14 gauge at .213 ohms per ft = 10.65 ohms for around 20 amps and about 4500 watts. 5/8 coils will give about 2 inches per coil and 16 coils per in. So 32" per ft. while tight thats about 19 inches of coil while tight. My oven has a total of 90" of groove. Thats means about 4 3/4 coils per inch of groove. My Chamber is 6" wide 5" high and 21" long. I think I will hit 1500 in around 10 minutes with 14 gauge at 20 amps compared to 12-13 with 16 at 17 amps. Mine currently slows down as it goes up, at 1800 it was only climbing about a 40 degrees a minute.


I did get my oven cobbled back together and up the 1860 for 30 minutes to do my D2. It is soaking in some dry ice right now.
 
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