1. Ignoring the wiring, what is depicted in this photograph? (1) (2) (3) (4) Hot water lines Central vacuum lines Natural gas lines Cold water lines vo.agarNE THIN 2. What is the purpose of the item in this picture? (1) (2) Central air conditioner connection Electric meter connection (3) Outdoor barbeque connection (4) Natural gas meter connection 3. What is the purpose of the item in this picture? (1) Bathroom vanity connection (2) Washer connection in laundry room (3) Dryer connection in laundry room (4) Hot water tank connection in basement 4. What is the item labelled "3" in this picture? (1) Natural gas meter (2) Sump pump (3) Water meter (4) Sewer backup stop