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<Electrical Hazards>
Do not trip a metal clad circuit breaker under load with the manual trip button on the breaker operating mechanism. Use the control switch. Also, the current transformer core may be damaged. If it should be unavoidable to change secondary connections while primary current is flowing, the secondary terminals must be short-circuited at the current transformer while the change is being made. Take care not to disturb ground connections.
CAUTION : Do not short-circuit the secondary of a transformer with current flowing in the primary
