The Medway Handyman wrote:
Hi

I need to check a 3kw x 27" immersion heater element to see if it's
working. If I connect my multi meter across the terminals, what
resistance should I find?

Why bother? - sling it in the skip and fit a new one which will cost about
£20 - the customer will be happier and you won't be back there working for
free every weekend trying to get it to work.