Table 305.5 (A)

D

Daniel Smith

Member
Location
Colorado
Occupation
Electrician
I’m currently studying for my masters electrician test. I was looking through the index on a question that asked about minimum depth requirements for Rigid metal conduit under an airport raceway. I went to the index and looked under Rigid metal conduit where Istudying for my masters electrician test. I was looking through the index on a question that asked about minimum depth requirements for Rigid metal conduit under an airport raceway. I went to the index and looked under Ridge metal conduit where I found underground installations and it gave me three different code references. It gave the following, table 305.3, table 305.5 (A), 305.15 (C). When I tried to find table 305.5 (A) I couldn’t find it. I’m fairly certain this is a typo because the table doesn’t exist. I tried looking up if anyone else had noticed this in the code book and didn’t see anything online so I thought I’d post here to bring it to somebody’s attention and potentially get an answer if it’s a typo or if there really is a table 305.5 (A). I found this table reference and multiple different sections of the index, direct burial. Has anyone ever seen this before?
 
The rule in is 300.5(A) but prior to the 2023 code, the table was Table 300.5. In the 2023 code the table is 300.5(A) and in the 2026 it is 300.7A)
 
ggunn said:
More like they just shifted it around for reasons that only make sense to them
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It always should have been Table 300.5(A) as the table is in Section 300.5(A) and the NEC Style Manual requires that a table have the same number as the section it is in.
 
Daniel Smith said:
Interesting, so you think it’s a typo then.
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I guess, but not one important enough to make any type of difference. If you go to section 300.5(A) you are also looking at the table, and the code text in 300.5(A) references Table 300.5 in the older codes.
 
don_resqcapt19 said:
The rule in is 300.5(A) but prior to the 2023 code, the table was Table 300.5. In the 2023 code the table is 300.5(A) and in the 2026 it is 300.7A)
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This is one of the most frustrating things about the NEC. What possible reason could they cite to change things like table numbers? Table 300.5 was in the code from 1975. Didn't they learn when they changed Table 310.16 to Table 310.15(B)(16) (2011, 2014, 2017) and then back to 310.16 because everyone hated it. It had been Table 310.16 for over 30 years before it was screwed around with. Common code table numbers (250.66, 250.122, 300.5, 310.16, etc.) should be immutable.
 
infinity said:
This is one of the most frustrating things about the NEC. What possible reason could they cite to change things like table numbers? Table 300.5 was in the code from 1975. Didn't they learn when they changed Table 310.16 to Table 310.15(B)(16) (2011, 2014, 2017) and then back to 310.16 because everyone hated it. It had been Table 310.16 for over 30 years before it was screwed around with. Common code table numbers (250.66, 250.122, 300.5, 310.16, etc.) should be immutable.
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Those changes were to comply with the NEC Style Manual. The table number should have the same number as the section number that applies to the table. Based on the style manual, Table 250.122 should really be Table 250.122(A).
In the case of 310.16, there was no section number related to that table, so it was an invalid table number as all tables must be associated with a section number.. Notice that when they restored Table 310.16, they also added a section 310.16.

That is all driven by the correlating committee and NFPA staff, not by the Public Input process.
 
infinity said:
Common code table numbers (250.66, 250.122, 300.5, 310.16, etc.) should be immutable.
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They changed, from other locations, 250.66 and 250.122 back in about 1999 NEC IIRC? I had the original locations well memorized and took seemingly forever to remember what the new location was. Now I can't remember what the old sections were.

Just looked at an older code book and jogged my memory. T250-94 used to be what is now T250.66 and T250-95 used to be what is now T250.122.
T310-16 was still T310.16 though.
 
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