Explain how the circuit works in detail **FIRE ALARM WITH MOTOR CONTROLDI1N4887 SENSORQBC357DR11BUZDC 3-38RIZIKLED3SCRRISIK$1(b)IKSUBSTITUTIONN/C LEDI (G)WARNINGSW2WITH PIN CONFIGURATIONIN4887RELAYHмоPUSH TO OFFLEDZ(G)SiCaMOTOR (MR13製LED4CIRCUIT DIAGRAM OF FIRE ALARM WITH MOTOR CONTROL

This circuit, titled "Fire Alarm with Motor Control," combines fire detection with motor control…

Answered: ** FIRE ALARM WITH MOTOR CONTROL DI…

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter15: Residential Air-conditioning Control Systems

Section: Chapter Questions

Problem 8RQ

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110 About indistrial piping WHY IS THE ASME 31.3 ALLOWABLE VOLTAGE A COMBINED VOLTAGE?
Most residential general lighting circuits are wired with 14-AWG copper conductors and are protected by 15-amp circuit breakers. However, there are many electricians who install 12-AWG copper conductors and protect them with 20-amp circuit breakers. How will you know which conductor size and which circuit breaker size will be used for the general lighting branch circuits in the house you are wiring?
The following problems pertain to luminaires in clothes closets. a. Does the Code permit bare incandescent lamps to be installed in porcelain key-less or porcelain pull-chain lampholders? ________________ b. Does the Code permit bare fluorescent lamp luminaires to be installed? ________________ c. Does the Code permit pendant lampholders to be installed? ________________ d. What is the minimum clearance from the storage area to surface-mounted incandescent luminaires? ________________ e. What is the minimum clearance from the storage area to surface-mounted fluorescent luminaires? ________________ f. What is the minimum distance between recessed incandescent or recessed fluorescent luminaires and the storage area? ________________ g. Define the storage area. ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ h. If a clothes hanging rod is installed where there is access from both sides, such as might be found in a large walk-in clothes closet, define the storage area under that rod. ___________________________________ ___________________________________
Difference in circuit breakerand isolator.
15. What does a grounding symbol on a construction drawing convey?A. A single ground rodB. A grounding electrode systemC. A ground-fault current pathD. An equipment grounding conductor
13. Two electricians are discussing feeders that supply branch circuits. Electrician A says that the AHJ canrequest a drawing that indicates conductor size and other details. Electrician B says that a GFPE must beincluded as part of the 500A feeder disconnect. Which of the following statements is correct?A. Both electricians are correct.B. Neither electrician is correct.C. Only Electrician A is correct.D. Only Electrician B is correct.
The voltage drop across two series – connected units A & B are 60 & 90 Volts respectively . Assume EA to be reference phasor , a) calculate the resultant voltage (ER) and the angle it makes with the x axis reference? if EA lags behind EB by 90⁰ (b) If EB leads EA by 60⁰?
h.1. In an alternating-current system, the maximum size for a copper grounding electrode conductor isA. 250 kcmil.B. 3/0.C. 500 kcmil.D. 4/0. h.2. The figure shows a fault condition in an ungrounded electrical system. Which of the following will occurbecause of the fault in this system?A. Only the overcurrent protector at Point A will trip open.B. The ground fault will heavily damage the service.C. Nothing will happen until a second ground fault occurs.D. The overcurrent protection will trip, shutting off all the line side power.
We are running 3 wires in an IMC to a control panel with a 150 amp circuit breaker disconnect in the control panel. The conduit is run 12 inches above the roof on a strut rack. The ambient air temperature is 88 degrees. This control panel feeds the #1 cooling fan. What sized ungrounded conductors do we need? All conductors have typeTHHN insulation. A #1 AWG B 100 Kcmil C #1/0 AWG D #10 AWG What sized IMC do we need? A 3/4" B 1 1/4" C 1" D 1 1/2"
Fire alarm cable generally used in more complex residential fire alarm and security systems is marked (FPL) (low-voltage bell wire) (THHN). (Circle the correct answer.)
13. Which of the following is a method for identifying a grounding terminal for connecting an equipmentgrounding conductor to a device?A. The letters EGCB. A green octagonal nutC. A red pressure wire connectorD. A green screw with a hexagon head
12. A short circuit describes the condition where there's contact between theA. hot wire and the neutral wire.B. grounded conductor and the grounding wire.C. hot wire and the grounding wire.D. neutral wire and the grounded conductor. I'm not sure if it's the letter A or C, could you help me with the correct answer.

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** FIRE ALARM WITH MOTOR CONTROL DI 1N4887 SENSOR QBC357 D R11 BUZ DC 3-38 RIZ IK LED3 SCR RISIK $1(b) IK SUBSTITUTION N/C LEDI (G) WARNING SW2 WITH PIN CONFIGURATION IN4887 RELAY H мо PUSH TO OFF LEDZ (G) SiCa MOTOR (M R13 製 LED4 CIRCUIT DIAGRAM OF FIRE ALARM WITH MOTOR CONTROL