// CODE SNIPPET
685.12 Direct-Current System Grounding
Related Code Sections
685.12 Special Equipment, Direct-Current System Grounding
Two-wire dc circuits shall be permitted to be ungrounded ...
National Electrical Code 2020 of Minnesota > 6 Special Equipment > 685 Integrated Electrical Systems > 685.12 Direct-Current System Grounding
(B) Special Conditions, Over 300 Volts
DC microgrids operating at voltages greater than 300 volts dc shall be reference-grounded dc systems or functionally grounded dc systems ...
National Electrical Code 2020 of Minnesota > 7 Special Conditions > 712 Direct Current Microgrids > 712.52 System Grounding > (B) Over 300 Volts
(A) Wiring and Protection, Two-Wire, Direct-Current Systems
with 250.20 shall not be required to be grounded. Exception No. 3: Direct-current fire alarm circuits having a maximum current of 0.030 ampere as specified ...
National Electrical Code 2020 of Minnesota > 2 Wiring and Protection > 250 Grounding and Bonding > 250.162 Direct-Current Circuits and Systems to Be Grounded > (A) Two-Wire, Direct-Current Systems
250.164 Wiring and Protection, Point of Connection for Direct-Current Systems
Direct-current systems to be grounded and supplied from an off-premises source shall have the grounding connection made at one or more supply ...
National Electrical Code 2020 of Minnesota > 2 Wiring and Protection > 250 Grounding and Bonding > 250.164 Point of Connection for Direct-Current Systems