Disclaimer - I have no official wiring diagram so please don't ask
One of the elements has gone on my kiln but I have decided to replace them all as the others are very much on their way out.
I took readings of the amps and resistance of the elements. The top circuit has 6 elements that was drawing 18.5A and the bottom with 4 elements drawing 15.5A. This was a little confusing as I was told by the electrician that a 30A fuse had been installed.
The resistance is shown in the picture. When I do the maths the amps comes out as 44.7 with the readings that I took for the resistance. Were my resistance readings just very badly taken as the elements are old?
The total resistance should be 240/30 = 8 Ohm or even with the 34amp reading it should be 7.06 Ohm
So why do I get a value of 5.37 Ohm
IMG_5296.JPG 38.79KB 2 downloads
Do elements go up in resistance as they age? The only way I can get a resistance reading near what I should have is by having the top circuit having 16 Ohm and the bottom having 15 Ohm which gives me a total resistance of 7.74 Ohm.