My 5.8kw ceramic hob has been wired into a 30 amp junction box with the electric ignition cable of the old gas hob and then wired into the cooker switch with .6 mm cooker cable. Is this correct wiring?
I Forgot about this one. 5.8KW on a 240V would only draw a little over 24 amps. in the U.S. this would require 10 Awg wire. A standard wire type THHN 10 Awg crosses over to 4.166 MM as the aprox diameter as listed in the NEC chapter 9 Table 5. I am surprised the cable is not melting this is way under sized. To answer the question: No it is not correctly wired.