high r2

Why? 3 RFCs - Kitchen, Downstairs and upstairs. Downstairs r2 e2e = 1330 Ohms. (1 leg of downstairs to 1 leg of kitchen = 650 Ohms And the other 480 Ohms.) Kitchen r2 e2e =0.78 Ohms Upstairs r2 e2e = 0.67 Ohms I have ideas - kitchen rewire picked up something, somewhere in the refit. Old...