LimaPotter Posted February 21, 2023 Report Share Posted February 21, 2023 Our new set of elements have a resistance of 32.5 Ohms compared to the original of 38 Ohms. We were told that the lower resistance suited the Australian conditions better. Will the lower resistant elements produce more heat as current is increased? Also, One of our 38 Ohm wires has broken - just above the middle of the 7 wall elements. If it is replaced with the lower resistant wire, will it cause a hot spot? Or should we replace all the elements. Hope you can help - we have no technicians in our rural area. Quote Link to comment Share on other sites More sharing options...
neilestrick Posted February 21, 2023 Report Share Posted February 21, 2023 What model of kiln do you have? What is your service voltage? What voltage was it set up for originally? Are all the elements the same resistance? How many zones in the kiln? I'm thinking the kiln was originally set up for 240 volts, but your service is 208 or 220 volts? LimaPotter 1 Quote Link to comment Share on other sites More sharing options...
Bill Kielb Posted February 21, 2023 Report Share Posted February 21, 2023 1 hour ago, LimaPotter said: We were told that the lower resistance suited the Australian conditions better. Will the lower resistant elements produce more heat as current is increased? Neil’s got the right overall questions. The simple answer is the usual solution is to produce the design wattage of the kiln with YOUR voltage. My knowledge is limited but Australia and 230v nominal is what I remember. Queensland was being modernized to 240v. Anyway best to match the original design wattage (which is the amount of heat your kiln was designed to produce) at your voltage which might mean changing your resistance. If you put your wattage into an internet calculator and solve for resistance at your nominal voltage that’s probably the best way to get the kiln to perform as designed. So to answer your question, lower resistance means higher current and wattage and likely needs new mains electric to comply with code. LimaPotter 1 Quote Link to comment Share on other sites More sharing options...
LimaPotter Posted February 23, 2023 Author Report Share Posted February 23, 2023 Thank you Bill and Neil. Will do as you advise Bill. Quote Link to comment Share on other sites More sharing options...
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