If you tend to switch the boiler on as soon as the element is covered whicle sparging you are heating it up when its surrounded by teh sweetest and thickest wort. wait until most of the wort has run through and it should be diluted enough so it doesnt turn your element into a toffee apple which cuts out all the time.
it takes a bit longer getting the wort to the boil but its still quicker than cleaning it mid boil. sorry if this is obvious but Ive been trying it recently and havent had any problems so far
