Several types of injury occur during construction. Those covered under other sections are grade changes and soil compaction. The other type of injury is mechanical injury to trunks. If the injury is minor, the tree will heal the wound with no difficulty. A major bark removal may kill some portion of the tree. Several wounds may girdle and kill a tree.
Electrical wiring should always be installed by a licensed electrician and inspected by your local wiring inspector. Your house or apartment may be inadequately wired if: Lights dim and motors slow down when an appliance goes on; Fuses blow or circuit breakers trip frequently; Toasters or irons fail to heat properly; The television picture shrinks.