National Electrical Code HandbookMcGraw-Hill Book Company, 1957 - Electrical engineering |
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Page 316
... motor may be used at 125 volts or less on a branch circuit protected at 20 amperes . Any such motor which is out of sight from the starter location shall be protected as specified in paragraph c for auto- matically started motors . Any ...
... motor may be used at 125 volts or less on a branch circuit protected at 20 amperes . Any such motor which is out of sight from the starter location shall be protected as specified in paragraph c for auto- matically started motors . Any ...
Page 323
... motor or appliance and subparagraph 1 must be complied with . The requirements of section 4322 for the running overcurrent protection of motors must be complied with in all cases , regardless of the type of branch circuit by which the motor ...
... motor or appliance and subparagraph 1 must be complied with . The requirements of section 4322 for the running overcurrent protection of motors must be complied with in all cases , regardless of the type of branch circuit by which the motor ...
Page 337
... motor M. It is evident that if the field circuit of motor M should be accidentally opened while the motor is lightly loaded , the motor would reach an excessive speed . In many applications of ... motor 4401 337 MOTORS AND MOTOR CONTROLLERS.
... motor M. It is evident that if the field circuit of motor M should be accidentally opened while the motor is lightly loaded , the motor would reach an excessive speed . In many applications of ... motor 4401 337 MOTORS AND MOTOR CONTROLLERS.
Contents
INTRODUCTION | 1 |
WIRING DESIGN AND PROTECTION | 25 |
WIRING METHODS AND MATERIALS | 155 |
Copyright | |
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amperes appliances approved armored cable Article asbestos autotransformer bonding jumper branch circuit building busway cabinet capacitor carrying capacity cent circuit breaker circuit-breaker Class comply conform connected current-carrying capacity cutout demand factor dielectric heating disconnecting means Division 2 locations ductors electrical metallic tubing electrode enclosed enclosure exposed feeder fitting fixture wire flexible cord floor full-load current fuses grounding conductor hazardous area hazardous locations horsepower inches installed insulation junction boxes lampholders lamps less lighting load material maximum mechanical injury metal conduit metal raceway meter motor National Electrical Code operating outlet box overcurrent device overcurrent protection panel panelboard paragraph pipe plug portable protective device rating or setting receptacle resistors rubber sealed secondary service conductors service drop service equipment shown in Fig space specified suitable supply switchboard Table temperature terminal thermoplastic three-wire tion transformer ungrounded voltage volts watts wireway wiring system