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If you have used metal sockets then you don't need to ground your case via the 'CASE' pad
since your case will be grounded very tightly via all the sockets. However, this may cause
earth loop problems if you then mount your case into a rack with other pieces of equipment in
it.
Please note that grounding a case is not the same as earthing a case. Your case must be
additionally earthed if you are fitting an internal mains transformer into your case. Please see
the next section for some more details on this.
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