Re: Baseboard heater sparking
I suspect the wiring from the breaker and panel go to the baseboard heater where they are spliced under the junction cover and then go to the thermostat and back to the heater
In which case there would be constant power at the heater regardless if the thermostat is off. The thermostat would only control the power to the heating element.
The hot wire's protective cover may be chaffed or the wire nut may have come off allowing the black wire intermittantly touching the the chassis.
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