@Martina are you sure that box doesn’t have power. The reason I ask is on the box it says Raychem and the make heat tape to keep pipes from freezing which require power and the cable going up to the roof looks like tieing into the electrical. Hire an electrician to find if it has power or you could go to Lowes or Home Depot and buy a non contact voltage tester and turn it on and hold it next to the wires and if it starts beeping real loud if the wires are live. That tester might be $ 15.00 at most. Another thing I saw was the cables going under your house out of that box possibly going to your water piping
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It appears to be old cable wires or old phone lines but why take a chance
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