// CODE SNIPPET
110.23 Current Transformers
Related Code Sections
110.23 General, Current Transformers
Unused current transformers associated with potentially energized circuits shall be short-circuited ...
National Electrical Code 2020 of Minnesota > 1 General > 110 Requirements for Electrical Installations > 110.23 Current Transformers
(1) Wiring and Protection, Overcurrent Relays and Current Transformers
current transformers. The separate overcurrent relay elements (or protective functions) shall be permitted to be part of a single electronic protective ...
National Electrical Code 2020 of Minnesota > 2 Wiring and Protection > 240 Overcurrent Protection > 240.100 Feeders and Branch Circuits > (A) Location and Type of Protection > (1) Overcurrent Relays and Current Transformers
250.172 Wiring and Protection, Instrument Transformer Cases
Exception: Cases or frames of current transformers, the primaries of which are not over 150 volts to ground and that are used exclusively to supply ...
National Electrical Code 2020 of Minnesota > 2 Wiring and Protection > 250 Grounding and Bonding > 250.172 Instrument Transformer Cases
(C) Equipment for General Use, Phase-Fault Protection
Phase-fault protection shall be provided in each phase, consisting of a separate phase-overcurrent relay connected to a separate current transformer ...
National Electrical Code 2020 of Minnesota > 4 Equipment for General Use > 490 Equipment Over 1000 Volts, Nominal > 490.72 Branch-Circuit Requirements > (C) Phase-Fault Protection
250.170 Wiring and Protection, Instrument Transformer Circuits
Secondary circuits of current and potential instrument transformers shall be grounded where the primary windings are connected to circuits of 300 ...
National Electrical Code 2020 of Minnesota > 2 Wiring and Protection > 250 Grounding and Bonding > 250.170 Instrument Transformer Circuits