ᐅ Future-Proof Garage Wiring: Electric Vehicles, Conductor Cross-Section
Created on: 11 Jan 2017 11:52
W
world-eHello everyone,
What conductor cross-section would you recommend for future-proof wiring to the garage? So far, a 16A CEE socket and several 230V outlets are planned for the garage. My concern is about the required capacity and cross-section in case an electric vehicle needs to be charged there later. It’s speculative, but perhaps someone else has already considered this. The cable length between the distribution board in the house and the garage is about 15 meters (50 feet). A sub-distribution panel in the garage is not planned at this stage. The individual outlets will be protected from the main distribution board in the house. The larger conductor cross-section for the future electric vehicle charging can initially have a lower circuit breaker rating.
Thank you.
What conductor cross-section would you recommend for future-proof wiring to the garage? So far, a 16A CEE socket and several 230V outlets are planned for the garage. My concern is about the required capacity and cross-section in case an electric vehicle needs to be charged there later. It’s speculative, but perhaps someone else has already considered this. The cable length between the distribution board in the house and the garage is about 15 meters (50 feet). A sub-distribution panel in the garage is not planned at this stage. The individual outlets will be protected from the main distribution board in the house. The larger conductor cross-section for the future electric vehicle charging can initially have a lower circuit breaker rating.
Thank you.
K
Knallkörper11 Jan 2017 12:34Perhaps the Tesla Model S could serve as a reference for the future. It has a largest battery capacity of 100 kWh. The onboard charger provides 11 kW, which corresponds to 16A three-phase current. Naturally, the charger requires about 10 hours for a full charge.
For the 16A three-phase connection, depending on the installation method and cable length, you will most likely only need a 5x1.5 mm² cable, but I would recommend installing a 5x2.5 mm² cable to be on the safe side, and it costs almost nothing extra.
On the other hand, there are of course also dual chargers, Superchargers with 120 kW, and so on. However, I would definitely not bet now that you might need these later. We are then talking about cross sections of 50 mm², which are quite difficult to install and also start to become expensive. As a maximum, I would probably install a 5x4 mm² cable to a CEE32 socket and protect it with a 32A breaker.
For the 16A three-phase connection, depending on the installation method and cable length, you will most likely only need a 5x1.5 mm² cable, but I would recommend installing a 5x2.5 mm² cable to be on the safe side, and it costs almost nothing extra.
On the other hand, there are of course also dual chargers, Superchargers with 120 kW, and so on. However, I would definitely not bet now that you might need these later. We are then talking about cross sections of 50 mm², which are quite difficult to install and also start to become expensive. As a maximum, I would probably install a 5x4 mm² cable to a CEE32 socket and protect it with a 32A breaker.
Have three-phase power installed. More than that is pointless anyway, as the main electrical connection typically only supplies 14.5 kW (16 hp), and with electric heating, it might be over 30 kW (40 hp). But if you request 120 kW (160 hp) or more, the utility company will probably come knocking if the application states "single-family home, one dwelling unit."
K
Knallkörper11 Jan 2017 22:44Alex85 schrieb:
The house connection usually has only 14.5kWIn our case, up to 30kW (40.2 horsepower) is standard and does not incur any additional costs.
G
Gartenfreund12 Jan 2017 05:45I would install a larger conduit. This provides great flexibility regarding the cable cross-section.
Similar topics