Tesla

Cybertruck

Using 48V Wiring Harness Not 12V

Tesla is known for its innovative design and edge-cutting technologies used in its vehicles. Tesla is again in trend after the start of delivery of its Cybertruck.

Cybertruck gives a unique and futuristic appeal to onlookers. It gives a range of 340 miles, can tow 11,000 pounds of weight, and accelerates 0 to 60 miles in just 2.6 seconds.

Cybertruck has many unique constructional features like steer-by-wire, range-extender, rear-wheel steering, and unconventional 48V wiring architecture (harness).

A separate set of wires is required for each component of the vehicle to its controlling unit (ECU/VCU/master). If these wire harnesses are opened can extend to kilometers.

But Tesla has 48V, ethernet, and CAN bus on the same cable to connect all the components in a daisy chain. Cybertruck still has some 12V components installed which get power from a 48V supply using DC-DC converters.

Advantages of 48V architecture

1. Using 48V architecture has helped Tesla to reduce the wiring by 77% and copper requirement by 50%. 2. If voltage is less then more current is required to meet power requirement. 3. If the current is reduced the heating effect in the harness is reduced as heat generated = I2*R*T which increases the lifespan and safety of wiring harnesses.