NM ES3J EXAM QUESTIONS WITH CORRECT ANSWERS

NM ES3J EXAM QUESTIONS WITH
CORRECT ANSWERS
What |is |the |NFPA |code |that |refers |to |household |firefighting |equipment? |- |CORRECT |
ANSWER✔✔-NFPA |72



Type |PLTC |nonmetallic |sheathed |shall |be |a |minimum |size |___ |gauge |for |class |3 |circuits |and |
have |an |insulation |rating |of |atleast |300 |V |- |CORRECT |ANSWER✔✔-22 |(NEC |725.179 |E)



What |is |the |function |of |a |green |wire |in |a |manufactured |home? |- |CORRECT |ANSWER✔✔-
Grounding |Connection



What |is |the |minimum |required |clearance |between |a |receiving |antenna |and |250 |volt |line |not |
insulated? |- |CORRECT |ANSWER✔✔-2 |Feet



What |is |the |maximum |number |of |supervisory |switches |permitted |to |be |connected |to |a |
actuate |a |single |transmitter? |- |CORRECT |ANSWER✔✔-20



According |to |NEC |class |3 |circuits |are |allowed |a |minimum |wire |size |of |what |gauge? |- |CORRECT |
ANSWER✔✔-18 |(NEC |725.179 |H)



What |is |the |minimum |length |of |a |grounding |rod |in |an |application |of |less |than |50 |volts? |- |
CORRECT |ANSWER✔✔-8 |Feet |

NEC |250.5.2.5



According |to |the |NEC |electrical |equipment |may |not |be |mounted |to |concrete, |cinder |block, |or |
brick |walls |with |one |of |these___. |- |CORRECT |ANSWER✔✔-Wooden |plugs

, Communication |cables |shall |have |a |voltage |rating |of |not |less |than |how |many |volts? |- |CORRECT
|ANSWER✔✔-300



(NEC |800.179)



In |a |manufactured |home |the |grounding |bus |shall |be |___ |through |the |green |color |insulated |
conductor |in |the |supply |cord |or |the |feeder |wiring |to |the |service |ground |in |the |service |
equipment |located |adjacent |to |the |mobile |home. |- |CORRECT |ANSWER✔✔-Connected |

(NEC |550.16)



what |is |the |maximum |blink |rate |on |a |strobe |light |per |second? |- |CORRECT |ANSWER✔✔-2 |

(NFPA |72 |18.5.2.1)



All |of |the |following |is |acceptable |as |a |ground |except? |- |CORRECT |ANSWER✔✔-10 |foot |gas |
pipe

(NEC |250.5.2 |A)



What |is |the |minimum |clearance |to |the |edge |of |a |wood |stud |for |a |wire |hole? |- |CORRECT |
ANSWER✔✔-1 |1/4 |inches |

(NEC |300.4 |A |1)



The |minimum |clearance |for |an |antenna |to |other |conductors |is? |- |CORRECT |ANSWER✔✔-2 |
Feet |

(NEC |810.13)



A |basic |alarm |system |will |have |__ |power |sources |- |CORRECT |ANSWER✔✔-2



What |is |the |maximum |voltage |that |coax |cable |can |carry? |- |CORRECT |ANSWER✔✔-60 |Volts |

(NEC |820.15)