We DIYd ours 8 yr ago. It was a heat wave memorial weekend and we still remember the horrible experience. It sounded easier than it was. We had bought the package on clearance when Chase Pitkin went out of business. We live on an acre. DH dug the trench by hand and buried the wire. Took all weekend. In hindsight we should've rented a wire layer (some equipment places rent the out) or at least an edger machine. We thought doing it by hand with a garden spade would be easy. It wasn't.
I second getting the grounding wire for it. We also hand a lightening strike and it traveled to the outlet in our garage and burned the outlet and a part of the wall. Thankfully the outlet had a surge protector.
Mom to two amazing DDs ('07 & '09) and a fur baby.
Gluten free since Nov '11 after non-celiac gluten sensitive diagnosis. Have had great improvement or total elimination of: migraines, bloating/distention, heartburn, cystic acne, canker sores, bleeding gums, eczema on elbows, dry skin and scalp, muscle cramps, PMS, hair loss, heart palpitations, fatigue. I'm amazed.