National Electrical Code Information and Discussion

[jtedesco1]

http://www.iaei.org/subscriber/magaz...zine_index.htm

[jtedesco1]

UL Lists over 5 different types of AFCI's:

http://www.nachi.org/bbsystem/usrfil...WhiteBook1.pdf

[jtedesco1]

Inspecting Electrical Services

http://www.iaei.org/subscriber/magaz...d/johnston.htm

[jtedesco1]

CMP-1

Articles 90, 100, 110, Annex A, Annex G

CMP-2

Articles 210, 215, 220, Annex D, Examples 1-6

CMP-3

Articles 300, 590, 720, 725, 760, Chapter 9, Tables 11(a) and (b), Tables 12(a) and (b)

CMP-4

Articles 225, 230

CMP-5

Articles 200, 250, 280, 285

CMP-6

Articles 310, 400, 402, Chapter 9 Tables 5 through 9, Annex B

CMP-7

Articles 320, 322, 324, 326, 328, 330, 332, 334, 336, 338, 340, 382, 394, 396, 398

CMP-8

Articles 342, 344, 348, 350, 352, 353, 354, 356, 358, 360, 362, 366, 368, 370, 372, 374, 376, 378, 380, 384, 386, 388, 390, 392, Chapter 9 Tables 1-4, Annex C

CMP-9

Articles 312, 314, 404, 408, 450, 490

CMP-10

Articles 240, 780

CMP-11

Articles 409, 430, 440, 460, 470, Annex D, Example D8

CMP-12

Articles 610, 620, 625, 630, 640, 645, 647, 650, 660, 665, 668, 669, 670, 685, Annex D, Examples D9 through D10
???

CMP-14

Articles 500, 501, 502, 503, 504, 505, 506, 510, 511, 513, 514, 515, 516

CMP-15

Articles 517, 518, 520, 525, 530, 540

CMP-16

Articles 770, 800, 810, 820, 830

CMP-17

Articles 422, 424, 426, 427, 680, 682

CMP-18

Articles 406, 410, 411, 600, 605

CMP-19

Articles 545, 547, 550, 551, 552, 553, 555, 604, 675, Annex D, Examples D11 and D12
CMP-20 (Pre-2005 Code)

[David E. Pacheco]

Hi Joe I would like to know how many service entrance conductor are allowed in one service mast. Is it regulated by conduit fill

[Greg Fretwell]

Generally speaking "one set". Unless you can fit into one of the exceptions (different voltages etc) you can only have one service per building.

[Joe Farsetta]

Greg,

What are you referring to as "service per building"?

I have seen different (separate) drops and segregated meter pans on many buildings. I would not consider them as a single service.

I was looking at a photo I have of four separate meters off of a single service, with a 5th meter along side the rest on its own service.

Utility company installed it and blessed it...

[jtedesco1]

Originally Posted by David E. Pacheco

Hi Joe I would like to know how many service entrance conductor are allowed in one service mast. Is it regulated by conduit fill

See the NEC Section 310.4 for conductors in parallel, and Yes See Annex C for conductor's all of the same size for fill in a single conduit.

http://www.llr.state.sc.us/pol/bcc/P...%20website.pdf

Also, they are required to be derated as well, and must be sunlight resistant.

Look here too:

http://www.electrician2.com/calculat...alculator.html

PS: For the subject of Greg's reply see 230.2

[jtedesco1]

Originally Posted by Greg Fretwell

There is always the confusion about whether a 3 wire feeder to the shed is legal. Now you will also need the build/code cycle info to see if it was a permitted/inspected/legal at the time installation.

BTW Roper wrote the proposal.

Roper? - was he a member of the SS of E?

[James H. Bushart]

I thought Roper owned an apartment building in California, and lived downstairs from two girl tenants and a boy he presumed to be gay.

[jtedesco1]

Originally Posted by jbushart

I thought Roper owned an apartment building in California, and lived downstairs from two girl tenants and a boy he presumed to be gay.

Probably so, http://en.wikipedia.org/wiki/The_Ropers

Greg is talking about another person with that name who was active on Prodigy in the 90's where we discussed the NEC.

[Greg Fretwell]

That was Ryan Jackson?

[jtedesco1]

That would make him 10 or 11 years old then, when we did DOS at 96 bps on Prodigy! Where's the Caper?

[Speedy Petey]

Originally Posted by jbushart

I thought Roper owned an apartment building in California, and lived downstairs from two girl tenants and a boy he presumed to be gay.

Roper was SO much cooler than Furley! Much as I love Don Knotts.

[Greg Fretwell]

Caper is still working in NJ. He pops up on ECN occasionally.