control drawing^). Simple apparatus, not shown on the control drawing, shall be permitted in a nonincendive field wiring circuit, provided the simple apparatus does not interconnect the nonincendive field wiring circuit to any other circuit.
FPN: Simple apparatus is defined in 504.2.
source equipment that develops hazardous gases, dust, or radiation.
FPN: For further information, see NFPA 40-2007, Standard for the Storage and Handling of Cellulose Nitrate Film.
considers both the magnitude and the duration of the load while the welder is in use.
422.11(A)through (G) and 422.10.
If a protective device rating is marked on an appliance, the branch-circuit overcurrent device rating shall not exceed the protective device rating marked on
424.1 Scope. This article covers fixed electric equipment used for space heating. For the purpose of this article, heating equipment shall include heating cable, unit heaters, boilers, central systems, or other approved fixed electric space-heating equipment. This article shall not apply to process heating and room air conditioning.
according to Article 422.
426.4 Continuous Load. Fixed outdoor electric deicing and snow-melting equipment shall be considered as a continuous load.
FPN: For further information, see ANSI/IEEE Std. 515-
2002, Standard for the Testing, Design, Installation and
Maintenance of Electrical Resistance Heat Tracing for In-
dustrial Applications; ANSI/IEEE Std. 844-2000, Recom-
Tables, Tables 430.247 through 430.251 (B) Part XIV
To Supply
Part II
430.24,
430.25,430.26
I. General
430.1 Scope. This article covers motors, motor branch- circuit and feeder conductors and their protection, motor overload protection, motor control circuits, motor controllers, and motor control centers.
30 volts or less and their associated components.
I. General
FPN: Refer to Article 352 for Rigid Polyvinyl Chloride Conduit: Type PVC and Article 355 for Reinforced Ther- mosetting Resin Conduit: Type RTRC.
