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DIAGNOSTICS & WORKSHOP TOOLS TECH INFO

 

How To Power Down a High Voltage System

What are the safety requirements on a high voltage system? 

Use only suitable tools and testing equipment (1000v CAT4 or Class 0). Isolate and lock off the electricity source as directed in the video. Test and prove that the electrical system is dead before commencing work. 

 

What is a safe voltage to work with on the powered-down vehicle? 

To ensure the vehicle you’re working with is safe enough to work on, your diagnostic tool should be picking up a voltage below 10 volts. 

 

What is the live/dead/live test? 

The live/dead/live test is used to confirm something is powered down by testing a confirmed live source beforehand, and once again after to check the equipment isn’t broken or providing a false reading of dead on the high voltage source.

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