Assertion: selective coordination | /r/HasProperty | required
Facets:
value: in the nec
type: LOCATION
value: since 1993
type: TEMPORAL
Source sentences:
text: Figure 2 illustrates where selective coordination is required and not required for multiple elevators systems.
text: Selective coordination has been a requirement in the NEC since 1993 when it was first required for circuits with multiple elevators.
text: Figure 3 explains where selective coordination is required, and where it is not required for emergency systems.
text: The application of circuit breakers will require determining the maximum available fault current at the overcurrent protective devices where selective coordination is required.
text: This evaluation is required for every installation, not just systems where selective coordination or a level of coordination is required.