Final answer:
Safety devices such as interlocks, high voltage disconnect relays, and automatic circuit grounds are important for electrical safety, but they should not be solely relied upon.
Step-by-step explanation:
Safety devices such as interlocks, high voltage disconnect relays, and automatic circuit grounds are important for electrical safety. However, they should not be solely relied upon because they may not always be foolproof and can sometimes fail to prevent accidents.
For example, circuit breakers and fuses can experience special problems when interrupting high-voltage electricity. Sparks may jump across their points and allow current to continue flowing. Ordinary circuit breakers and fuses may also be ineffective in preventing shocks.
It is important to use multiple layers of safety measures and follow proper safety protocols to ensure electrical safety.