Is there a code or regulation you can refer to for the distance required around an electrical panel?

Answer for USA, Canada and countries running a 60 Hz supply service.

The NEC and CEC requires a distance of 3 ft. (1 meter) in front of a panel, a width of 30 inches or the width of the panel, whichever is greater, and a height of 6 1/2 feet or the height of the panel, whichever is greater, to be clear of obstructions. Any door or hinged cover must be able to be opened to a 90 degree angle. There needs to be enough room to work in the panel even when energized to do the work safely.

THIS AREA SHALL NOT BE USED FOR STORAGE !!!

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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.