A longtime friend call asking if I would come over and see what she needed to charge the new electric automobile she plans on buying with her tax return and the most recent stimulus package as the down payment. She lives in the older historical part of town and she rents. The vast majority of automobiles are parked on the street as the common small lot size have no room for parking off-street.
Rather than just provide the bad news over the phone, I thought that it would be a great idea to just verify what I ‘believed’ to be reality, I agreed to visit. Upon arrival, with great luck I found a parking place, I quickly did a walk around her home. The building had a semi-current service line from the shared power pole. The power mast was an older style with an exterior electrical meter that had been updated, to allow auto meter reading.
Once in her apartment, she showed me the electric automobile she was planning on buying and she also showed me the charging unit specifications she had gotten from the dealership. The unit had both a standard charge rate (w/ 120 AC) and a fast charge rate (240 AC) selector switch. After checking the electrical requirement, we checked out the electrical supply for the home that has three apartments. Deep in the basement on the outside wall in which the Utility power system came into the house was the older 100amp break box that had been updated sometime in the far past when the screw-in fuse system was upgraded. Several additional boxes surrounded the primary panel, likely added to avoid replacing /upgrading the primary. Adding up the primary panel breakers, which the vast majority had been upgraded to 30amp breaks clearly indicated that this panel was overloaded and with luck the primary-disconnect had not been tripping regularly.
Long story short, the combination of running a cable to her car from the home is not legal as it would cross a public sidewalk, and secondly, the primary panel would need to be upgraded as would the supply mast on the exterior of the building likely costing several thousands of dollars.
The reality: This is a common reality with the vast majority of homes across the US.
If you are planning on buying that electric automobile, you had better double check if your current electrical system will even support its charging unit!
FYI: The above is provided as a worst case, most homes cannot support the needs of an electric automobile without a major upgrade to their homes' electric system.
Rather than just provide the bad news over the phone, I thought that it would be a great idea to just verify what I ‘believed’ to be reality, I agreed to visit. Upon arrival, with great luck I found a parking place, I quickly did a walk around her home. The building had a semi-current service line from the shared power pole. The power mast was an older style with an exterior electrical meter that had been updated, to allow auto meter reading.
Once in her apartment, she showed me the electric automobile she was planning on buying and she also showed me the charging unit specifications she had gotten from the dealership. The unit had both a standard charge rate (w/ 120 AC) and a fast charge rate (240 AC) selector switch. After checking the electrical requirement, we checked out the electrical supply for the home that has three apartments. Deep in the basement on the outside wall in which the Utility power system came into the house was the older 100amp break box that had been updated sometime in the far past when the screw-in fuse system was upgraded. Several additional boxes surrounded the primary panel, likely added to avoid replacing /upgrading the primary. Adding up the primary panel breakers, which the vast majority had been upgraded to 30amp breaks clearly indicated that this panel was overloaded and with luck the primary-disconnect had not been tripping regularly.
Long story short, the combination of running a cable to her car from the home is not legal as it would cross a public sidewalk, and secondly, the primary panel would need to be upgraded as would the supply mast on the exterior of the building likely costing several thousands of dollars.
The reality: This is a common reality with the vast majority of homes across the US.
If you are planning on buying that electric automobile, you had better double check if your current electrical system will even support its charging unit!
FYI: The above is provided as a worst case, most homes cannot support the needs of an electric automobile without a major upgrade to their homes' electric system.
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