[240.4(A)]. This is a trick question. Actually,
you don't install OCPDs on a fire pump (see Article 695). OCPDs
aren't required where interruption of the circuit would cause a
hazard.
[240.4(G)]. Yes. See Table 240.4(G).
[240.12]. They are coordinated short-circuit
protection and overload indication based on monitoring systems or
monitoring devices.
[240.30(A)(1)]. Install them in enclosures,
cabinets, cutout boxes, or equipment assemblies; or
Mount them on open-type switchboards, panelboards, or control boards
that are in rooms free from dampness (and from easily ignitable
material) and are accessible only to qualified personnel.
[240.93(C)]. You can't use it if:
1. Motors are connected on the load side of the higher-rated OCPD
and on the line side of the lower-rated OCPD, and
2. The sum of the motor full-load currents exceeds 1 percent of the
interrupting rating of the lower-rated OCPD. |
