NEC LOOP SERVICE CONDUCTORS 430.24 +430.25 CONDUCTORS 440.33 OVERLOADS440.521) AND (AZ) DISCONNECT LOCATION 440.14 -SIZE OCPO 440.12(81) +440.228)(1) AND (892) CONDUCTORS 440.33 DISCONNECT OCPO -440.14 -440.221) CONDUCTORS FILL-40% SPLICES-75% -3128 THWN FEEDER 2 CONDUCTORS -440.222) 30 208 V 30 208 V 30 208 v ACUNT AC UNIT AC UNIT

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Question

2-Calculate the minimum and maximum protection for an A/C, its conductors (75 ºC) and its grounding. 
For the following values:

 

 

NEC LOOP
SERVICE CONDUCTORS
430.24
+430.25
CONDUCTORS 440.33
OVERLOADS440.521) AND (AZ)
DISCONNECT
LOCATION 440.14
-SIZE
OCPO
440.12(81)
+440.228)(1) AND (892)
CONDUCTORS
440.33 DISCONNECT
OCPO
-440.14
-440.221)
CONDUCTORS
FILL-40%
SPLICES-75%
-3128
THWN
FEEDER 2 CONDUCTORS
-440.222)
30 208 V
30 208 V
30 208 v
ACUNT
AC UNIT
AC UNIT
Transcribed Image Text:NEC LOOP SERVICE CONDUCTORS 430.24 +430.25 CONDUCTORS 440.33 OVERLOADS440.521) AND (AZ) DISCONNECT LOCATION 440.14 -SIZE OCPO 440.12(81) +440.228)(1) AND (892) CONDUCTORS 440.33 DISCONNECT OCPO -440.14 -440.221) CONDUCTORS FILL-40% SPLICES-75% -3128 THWN FEEDER 2 CONDUCTORS -440.222) 30 208 V 30 208 V 30 208 v ACUNT AC UNIT AC UNIT
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