You've found the Internet !!!!

have you got a multimeter you can test the pairs with. if its telecom prs will be wh-bl wh-or wh-green wh-br wh-slate/may look grey.then red-bl red-or, red-green, red-br, red-slate,etc; 

bales:

 

have you got a multimeter you can test the pairs with. if its telecom prs will be wh-bl wh-or wh-green wh-br wh-slate/may look grey.then red-bl red-or, red-green, red-br, red-slate,etc; 

 

If it is still live - wouldn't it be about 40v? ... Enough to cause sparking and a fire hazard?

Still - you may have found a way to power your house as long as you convert to low voltage alternatives. No one charges for copper cablings power. You have found a way to go off grid - kind of :)