The panel enclosure need to be bonded to the grounding system; this guarantees any fault to the metal case journeys a breaker

https://northpixelate.com/s/JdTf9uOhicEaQTgEWAQhh

The panel enclosure should be bonded to the grounding system; this ensures any fault to the metal case trips a breaker rather of stimulating exposed surfaces precariously.