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#122582 12/03/05 12:01 AM
Joined: Dec 2000
Posts: 4,294
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300.5 (D)(3) Requires a warning ribbon at least a foot above unencased service conductors that are buried more than 18" deep.
Don't you think that this should be required on other underground installations as well?


[Linked Image]

Joined: May 2004
Posts: 116
S
Member
You mean this isn't a "warning" to AHJs? (grin)

Steve


Thanks
Steve
Joined: Jul 2002
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Scott,
Did you get that strip from the local cemetary?. [Linked Image]

Joined: Jan 2005
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Cat Servant
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I think the proper cite(s) would be 90.2 and 90.4.
(Especially in regards to enforcing non-existant requirements or the use of no-existant equipment).

Joined: May 2003
Posts: 2,876
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e57 Offline
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Upon finding this tape in the ground do you hand dig, or continue with a back-hoe?


Mark Heller
"Well - I oughta....." -Jackie Gleason
Joined: Dec 2000
Posts: 4,294
Member
OK, maybe the example is a little silly, but I think my question is a valid one.

Why should it be a requirement to put a warning ribbon above a 100 Amp residential 120/240 Volt service lateral, maybe fed by a 25 KVA transformer, when there's no requirement to provide the same type of warning above a 1000 Amp 480 Volt feeder?

Is my reasoning even goofier than usual? What am I missing here?

Joined: Jan 2003
Posts: 4,391
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IMO your right, it makes no sense to me that this only applies to service conductors.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Joined: Dec 2004
Posts: 209
H
Member
You guys are thinking too much again!

Joined: Sep 2004
Posts: 167
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Scott
Read 300.5(D) It is refering to direct buried conductors and cables. This does not apply to service conductors or laterals in conduit.

I've never heard of any direct buried cables encased in concrete though.

I agree that UG conductors in general need more attention from the code in regards to protection.


Larry LeVoir
Inspector
City of Irvine, CA
Joined: Nov 2000
Posts: 2,148
R
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It also doesn't make any sense that this only applies to condutors installed in a trench, not those installed by directional boring.
Don


Don(resqcapt19)
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