I went into a electric room and saw this cord, I know what it is for as each of this customers locations has one of these cords.

This cord is used to power a temporary refrigerated trailer, each loading dock has an outlet to plug these into. When the trailer arrives the cord gets hardwired to the refrigeration unit.

Someone apparently decided that this trailer needed a ground rod.

So some questions.

Do you think this application requires a ground rod?

Do you think this ground rod is acceptable?

I already have my own opinion I am hoping to cause some discussion of the various code articles that may or may not apply.

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Bob

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Bob Badger
Construction & Maintenance Electrician
Massachusetts