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1. Primary protection only is required if the transformer has a single-phase secondary with two wires. The protection rating must be 300% of the primary current if under 2 amps or 167% if 2-9 amps, or 125% of the rated primary current if over 9 amps. 2. Both primary and secondary protection is required if the transformer secondary has more than two wires. The primary protection must be 250% of the primary current and the secondary protection must be 167% if under 9 amps or 125% if over 9 amps. 3. If the

Author

Ali Baba

Language

EN