Food for thought...

We had (at another location) an electrician modify an MCC bucket by installing an accessory on the back plate.
He used screws that were longer than the factory screws.
When he attempted to install the bucket, the screws contacted the buss, and an arc blast occured.
He lingered in the burn center for 4 days before succumbing.
And THAT was the impetus for our new Electrical Safety Program which borrows heavily from NFPA 70E.
Be aware, please