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(A) Multiple Supply Sources
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551.31 Special Occupancies, Multiple Supply Source
Where a multiple supply system consisting of an alternate power source and a power-supply cord is installed, the feeder from the alternate power ...
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525.11 Special Occupancies, Multiple Sources of Supply
Where multiple services or separately derived systems, or both, supply portable structures, the equipment grounding conductors of all the sources ...
National Electrical Code 2020 of Minnesota > 5 Special Occupancies > 525 Carnivals, Circuses, Fairs, and Similar Events > 525.11 Multiple Sources of Supply
710.10 Special Conditions, Identification of Power Sources
with other plaques or directories for other on-site sources. Where multiple sources supply the building, the plaque or directory shall be marked ...
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(C) Special Conditions, Marking
Equipment containing overcurrent devices in circuits supplying power to a busbar or conductor supplied from multiple sources shall be marked ...
National Electrical Code 2020 of Minnesota > 7 Special Conditions > 705 Interconnected Electric Power Production Sources > 705.12 Load-Side Source Connections > (C) Marking
(A) Wiring and Protection, Special Conditions
standby systems Parallel power production systems Systems designed for connection to multiple sources of supply for the purpose of enhanced reliability ...
National Electrical Code 2020 of Minnesota > 2 Wiring and Protection > 230 Services > 230.2 Number of Services > (A) Special Conditions