电线如何过后院，是有规定的。只要电力公司做得符合规定，电线就可以过你后院。这个是utility easement，极大多数地产都有。
但是，现在是你要加建，从而导致电线无法安全过你的后院，起因是你，为什么要电力公司付钱？
http://articles.baltimoresun.com/2008-07-15/business/0807140122_1_utility-lines-safety-zone-utility-pole
In other words, "BGE has the right of way for permitting wires to cross a customer's yard, and it is our responsibility for ensuring that equipment is installed and operating in accordance with the proper safety guidelines," said Kelly Shanefelter, a BGE spokeswoman. "That being said, when a customer makes changes - such as a building addition, or a pool or deck - that require the relocation of equipment, the customer is responsible for the cost. Customers requesting equipment relocations must pay the costs of the relocation because it would be unfair for all of BGE's customers to pay costs that wouldn't otherwise be incurred and only provide benefits to one customer," she said.
但是，现在是你要加建，从而导致电线无法安全过你的后院，起因是你，为什么要电力公司付钱？
http://articles.baltimoresun.com/2008-07-15/business/0807140122_1_utility-lines-safety-zone-utility-pole
In other words, "BGE has the right of way for permitting wires to cross a customer's yard, and it is our responsibility for ensuring that equipment is installed and operating in accordance with the proper safety guidelines," said Kelly Shanefelter, a BGE spokeswoman. "That being said, when a customer makes changes - such as a building addition, or a pool or deck - that require the relocation of equipment, the customer is responsible for the cost. Customers requesting equipment relocations must pay the costs of the relocation because it would be unfair for all of BGE's customers to pay costs that wouldn't otherwise be incurred and only provide benefits to one customer," she said.
