I am in Europe and recently purchase this junction box:

junction box

I have two questions:

  1. What is the intended use of the two brass colored busbars versus the three steel colored busbars?
  2. What is the intended use of the straight busbar in the middle versus those curved busbars on the periphery?

1 Answer 1

  1. neutral and ground vs three phases.
  2. ground

Note the "N" and ground-symbol moulded on the plastic base.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.