Two generators running in parallel, had several brownouts: some shut down circuits activated, lights in and out emergency switchboard changed over to E/G. It happened several times within an hour and was noticed that the main switchboard ground fault indicating lights showed a ground fault...

David from BC, Canada. I have been working as ship's Marine Engineer for decades, on deep sea and then local waters. Had some basic text book marine electrical introductions. I did not have hands on experiences except working with ship's electricians for trouble shootings. The designs vary a...