Discuss 3P+N socket testing in the Electrical Testing & PAT Testing Forum area at ElectriciansForums.net
A phase rotation tester can be used to test polarity but isn't necessary....unless you want to test phase rotation.You would use a phase rotation tester.
Consult a industrial electrician.
Reply to 3P+N socket testing in the Electrical Testing & PAT Testing Forum area at ElectriciansForums.net
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