The transformer secondary should also be protected by a standard high-rupture capacity ( HRC ) fuse or low voltage circuit breaker.
2.
High rupturing capacity fuses and appropriately rated circuit breakers are the recommended type for RAPS . Cable termination and connections must be done properly to avoid arcing also, and soldering is not recommended.
3.
Good quality multimeters designed to meet CAT II and above standards include High Rupture Capacity ceramic fuses typically rated at more than 20 kA capacity; these are much less likely to fail explosively than more common glass fuses.
4.
High rupturing capacity fuses can be rated to safely interrupt up to 300, 000 amperes at 600 V AC . Special current-limiting fuses are applied ahead of some molded-case breakers to protect the breakers in low-voltage power circuits with high short-circuit levels.
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