Sure Tst Arc with all lights on?

I ran into an unusual situation today. This is a Sure Test Arc tester model 61-059 lit up! Has anyone ever experienced this? The house is old and has K-T all over, buried in insulation and spliced every which way.

Run Forrest, run! :wink:

240VAC on the circuit.

Thanks, I suspected that considering the switch to the left controls the power to the electric baseboard heater just underneath.

Feed back , Likely did you test the voltage?

I love the answer, maybe I will use when someone asks would you buy this house?