I have removed a baseboard heater from my dining room. The circuit that feeds this heater is a ganged circuit breaker with 240 volts. It also supplies the baseboard heater in the bathroom, and I want to keep this one. So, I have removed the heater, and passed the wires into the crawl space under the house. There I have placed the wires into a junction box, placed wire nuts on the black and white wire ends and placed the cover on the box. There are no other wires in this box. Where the thermostat was, I have capped the ends with wire nuts and covered it up with a blank cover. I have left the ground wires attached to the box. Question, is this safe enough so if I turn the breaker on for the other heater in the bathroom, I will not have a problem? The circuit is open in 2 places.