Eclectic engineer
Member
- Location
- USA
- Occupation
- Engineer
The attached image has 16 residential meters (Apartment building) each having 100A breakers. This meter box is located in the parking garage. The property owner is interested in installing EV chargers at each of the 16 units parking spaces in the garage. The preference is to pull the charging circuits downstream of each resident's meter so that electricity consumption can be billed directly to each resident.
Approach 1 - One way to accomplish this is to pull circuits from each apartments sub-panel to their assigned parking spots. This appears to be a very complex solution as this is a multi-story building and apartments are situated over a wide footprint. Circuit runs will have to be really long.
Approach 2 - Another solution I was thinking about is Feeder Taps. I haven't done or witnessed this type of work before, but wanted to know how feasible would it be to tap a set of conductors right after each utility meter and supply power to the EV chargers? Since the electrical room is in the parking garage, installation will be much simpler.
Q1 - Is the Feeder tap approach a possible solution?
Q2 - If so, what are the rules, NEC codes and other items I need to know about to get deeper insight into this method?
Thank you.
Approach 1 - One way to accomplish this is to pull circuits from each apartments sub-panel to their assigned parking spots. This appears to be a very complex solution as this is a multi-story building and apartments are situated over a wide footprint. Circuit runs will have to be really long.
Approach 2 - Another solution I was thinking about is Feeder Taps. I haven't done or witnessed this type of work before, but wanted to know how feasible would it be to tap a set of conductors right after each utility meter and supply power to the EV chargers? Since the electrical room is in the parking garage, installation will be much simpler.
Q1 - Is the Feeder tap approach a possible solution?
Q2 - If so, what are the rules, NEC codes and other items I need to know about to get deeper insight into this method?
Thank you.
