`
TABLES FOR SFDU AND MFDU
PEC 2009 ED PAGE 100 in the book; PAGE 54 in PDF
PEC 2017 ED PAGE 54 in the book
NOTE: The values in the 2009 ed are the ones used in the
calculation examples. These are the valaues shown on the
right side of the table.
PEC 2009 ED PAGE 104 in the book; PAGE 56 in pdf
PEC 2017 ED PAGE 56 in the book
8
28b
24
8
16
16
24
4
16
16
16
12
28b
16
24
24
2
8
4
2
PEC 2009 ED PAGE 106 in the book; PAGE 57 in the pdf;
PEC 2017 ED PAGE 57 in the book
Property of and for the exclusive use of SLU. Reproduction, storing in a retrieval system, distributing, uploading or posting online, or transmitting in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise of any part of this document, without the prior written permission of SLU, is
strictly prohibited.
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PEC 2009 ED PAGE 108-110 in the book; PAGE 60-62 in pdf;
PEC 2017 ED PAGE 58 in the book
Property of and for the exclusive use of SLU. Reproduction, storing in a retrieval system, distributing, uploading or posting online, or transmitting in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise of any part of this document, without the prior written permission of SLU, is
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STANDARD AMPERE FRAME AND AMPERE TRIP (AT) OF CIRCUIT BREAKERS
STANDARD AMPERES OF SAFETY SWITCHES AND FUSES
A. CIRCUIT BREAKERS
50 AF (AMPERE FRAME)
15 AT
20 AT
22 AT
25 AT
30 AT
35 AT
40 AT
45 AT
50 AT
100 AF (AMPERE FRAME)
60 AT
70 AT
80 AT
90 AT
100 AT
200 AF or 225 AF (AMPERE FRAME)
110 AT
125 AT
150 AT
225 AT
175 AT
200 AT
400 AT
450 AT
500 AT
600 AT
2500 AT
3000 AT
4000 AT
20 A
30 A
50 A
60 A
90 A
100 A
125 A
150 A
300 A
400 A
600 AF (AMPERE FRAME)
250 AT
300 AT
350 AT
800 AF (AMPERE FRAME)
700 AT
800 AT
1200 AF (AMPERE FRAME)
1000 AT
1200 AT
1600 AF (AMPERE FRAME)
1600 AT
2000 AT
5000 AT
6000 AT
B. FUSES
30 A Safety Switch
Fuses:
15 A
60 A Safety Switch
Fuses:
40 A
100 A Safety Switch
Fuses:
80 A
200 A Safety Switch
Fuses:
110 A
400 A Safety Switch
Fuses:
250 A
600 A Safety Switch
Fuses:
500 A
175 A
200 A
600 A
AT designates that the CB should be configured with the particular trip unit or should be set at that.
AF is the designation of the maximum continuous current that the breakers frame can carry and is also the indication of
the CBs physical size.
KAIC is an acronym standing for Kilo Ampere Interrupting Capacity. It refers to the ability of the circuit breaker
to withstand a short circuit or overload. Large industrial circuit breakers often include a rating in KAIC that
indicates the circuit size with which they are compatible.
Property of and for the exclusive use of SLU. Reproduction, storing in a retrieval system, distributing, uploading or posting online, or transmitting in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise of any part of this document, without the prior written permission of SLU, is
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PEC 2009 ED PAGE 169 in the book; PAGE 95 in the pdf
PEC 2017 ED PAGE 58 in the book
PEC 2009 ED PAGE 700; PAGE 383 in the pdf
PEC 2017 ED PAGE 356 in the book
PEC 2009 ED PAGE 732; PAGE 403 in the pdf
PEC 2017 ED PAGE 370 in the book
Property of and for the exclusive use of SLU. Reproduction, storing in a retrieval system, distributing, uploading or posting online, or transmitting in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise of any part of this document, without the prior written permission of SLU, is
strictly prohibited.
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PEC 2009 ED PAGE 116i n the book; PAGE 65 in the pdf
PEC 2017 ED PAGE 61 in the book
Property of and for the exclusive use of SLU. Reproduction, storing in a retrieval system, distributing, uploading or posting online, or transmitting in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise of any part of this document, without the prior written permission of SLU, is
strictly prohibited.
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PEC 2009 ED PAGE 350 in the book; PAGE 177-178 in the pdf
PEC 2017 ED PAGE 174 in the book
Note: This is from the 2009 ed, there are slight changes in the values
and the correction factors are on another page.
We often call this as the Table of Conductor Ampacities 
Property of and for the exclusive use of SLU. Reproduction, storing in a retrieval system, distributing, uploading or posting online, or transmitting in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise of any part of this document, without the prior written permission of SLU, is
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TABLES FOR MOTOR CIRCUITS
PEC 2009 ED PAGE 169 in the book; PAGE 95 in the pdf
PEC 2017 ED PAGE 58 in the book
PEC 2009 ED PAGE 700; PAGE 383 in the pdf
PEC 2017 ED PAGE 356 in the book
Property of and for the exclusive use of SLU. Reproduction, storing in a retrieval system, distributing, uploading or posting online, or transmitting in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise of any part of this document, without the prior written permission of SLU, is
strictly prohibited.
7
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PEC 2009 ED PAGE 731 in the book; PAGE 401 in the pdf
PEC 2017 ED PAGE 370 in the book
Property of and for the exclusive use of SLU. Reproduction, storing in a retrieval system, distributing, uploading or posting online, or transmitting in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise of any part of this document, without the prior written permission of SLU, is
strictly prohibited.
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PEC 2009 ED PAGE 732; PAGE 403 in the pdf
PEC 2017 ED PAGE 370 in the book
PEC 2009 ED PAGE 733; PAGE 403 in the pdf
PEC 2017 ED PAGE 371 in the book
Property of and for the exclusive use of SLU. Reproduction, storing in a retrieval system, distributing, uploading or posting online, or transmitting in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise of any part of this document, without the prior written permission of SLU, is
strictly prohibited.
9
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PEC 2017 ED PAGE 373 in the book
PEC 2009 ED PAGE 734; PAGE 404 in the pdf
Property of and for the exclusive use of SLU. Reproduction, storing in a retrieval system, distributing, uploading or posting online, or transmitting in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise of any part of this document, without the prior written permission of SLU, is
strictly prohibited.
10
`
PEC 2009 ED PAGE 350 in the book; PAGE 177-178 in the pdf
PEC 2017 ED PAGE 174 in the book
Note: This is from the 2009 ed, there are slight changes in the values
and the correction factors are on another page for the 2017 ed..
We often call this as the Table of Conductor Ampacities
Property of and for the exclusive use of SLU. Reproduction, storing in a retrieval system, distributing, uploading or posting online, or transmitting in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise of any part of this document, without the prior written permission of SLU, is
strictly prohibited.
11