It sounds like you’re referring to the service line. The service line runs from Oncor’s pole across your property to your home. While only Oncor is allowed to prune from distribution and transmission power lines, keeping tree limbs away from the service drop line is the responsibility of the homeowner. You should call a qualified tree trimmer or arborist to prune and remove the tree limbs from your service line.
For safety reasons, especially if you will be doing the pruning yourself, you may want to call your Retail Electric Provider (using the phone number listed on your bill for a service order request) and arrange to have the service drop disconnected while the pruning is underway. This allows Oncor to temporarily lower the service line to your home, thereby allowing you or the pruning company you’ve hired to safely trim the trees. After the work is complete, Oncor will re-install the line and reconnect the electricity. There is a nominal charge for this service.
Typically it is best to call in these types of requests at least a couple of days prior to when you want to do the work. The agent should be able to schedule the disconnect and reconnect based on the times you are requesting.
Additionally, if you see any hazardous conditions, such as sparking, arcing or burning near the line or in the tree branches touching the line, please call 911. Oncor works closely with local police and fire departments during such situations.
-Ken K., Oncor Vegetation Management Expert