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Article 90 Introduction
 

 
Subject - Article 90 Introduction

September 22, 2006  

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Introduction

90.2 Scope of NEC

New FPN identifies the type of organizations that may be exempt from the NEC requirements.

(B) What
Isn’t Covered
. The National Electrical Code, doesn’t apply to the following applications:
(4) Communications Utilities. The installation requirements of the NEC do not apply to communications (telephone), CATV, or network-powered broadband utility equipment located in building spaces used exclusively for such use or outdoors, if the installation is under the exclusive control of the communications utility.
Figure 90-1

(5) Electric Utilities. The NEC doesn’t apply to electric installations under the exclusive control of an electric utility where such installations:
a. Consist of service drops or service laterals and associated metering.
Figure 90-2
b. Are located on legally established easements, rights-of-way, or by other agreements recognized by public/utility regulatory agencies, or property owned or leased by the electric utility. Figure 90-3
c. Are on property owned or leased by the electric utility for the purpose of generation, transformation, transmission, distribution, or metering of electric energy. See Figure 90-3

FPN to 90.2(B)(4) and (5): Utilities include entities that install, operate and maintain communications systems (telephone, CATV, Internet, satellite or data services) or electric supply systems (generation, transmission or distribution systems) and are designated or recognized by governmental law or regulation by public service/utility commissions. Utilities may be subject to compliance with codes and standards covering their regulated activities as adopted under governmental law or regulation.


Figure 90-1
(Click on image to enlarge)


Figure 90-2
(Click on image to enlarge)


Figure 90-3
(Click on image to enlarge)

   

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Comments
  • As always, very nicely presented. Even a non professionally trained person like myself can easily understand the materials.

    B. Fargo
    Reply to this comment

  • Don't overlook (1) through (3) that include certain watercraft and railroads.

    Bruce Carpenter
    Reply to this comment

  • Cleveland Public Power builds electrical services including the service switch or service panel. They do not follow National Electrical Code on at least 1 out of 3 services. Defining the service point as the load side of the service switch and saying that the service does not need to be Code because the electrical utility owns it creates insurance problems for me. Nationwide is about the only insurance company of the ones that have agents who are close to home who will insure someone who has had a state license for less than 3 years.

    Since they install electrical services for FREE the customer has no incentive to have me do the job the right way. I am then stuck with things like 1/2 inch diameter copper clad steel ground rods sticking up out of the ground and no mechanical protection for the part of the grounding electrode conductor that is close to the ground. They also use residential copper wire sizes for commercial single phase services - maybe that might work but a 100 amp or 200 amp service is either lightly loaded or heavily loaded.

    The insurance companies have insisted that electrical untilities use the stricter of NEC of National Electrical Safety Code for anything that touches or runs underneath customer property. The sole exception is that a power service drop that has no communication drop underneath can be 16.5 feet over a public street or commercial driveway if the custormer has a space constraint. Usually, the Cleveland Electric Illuminating Company has solved that kind of problem by installing a pole right next to a customer service entrance. First Energy does not have a problem with using NEC in customer property so why can't Cleveland Public Power be reasonable and follow NEC for anything that touches customer property?

    Ohio law says that cities have authority to regulate electrical utility installations but the Cleveland building department does not inspect CPP's electrical services. CPP is somehow a law unto itself. Cleveland Public Power allegedly has their own electrical inspector but I see a lot of services inside and outside City of Cleveland where both the electrician and the inspector are at least 30 years out or date on NEC. A lot of electrcians are still putting the service weatherhead below the point of attachment and putting the splices above the weatherhead which creates a problem with stranded conductor acting as a poor excuse as a water hose.

    Cleveland Public Power one time toasted ( killed ) somebody with a handhole cover that was not grounded and bonded and a 480 volt streetlighting circuit somehow energozed the cover. This was after the Ohio Supreme Court struck down sovreign immunity.

    Mike Cole mc5w at earthlink dot net

    Michael R. Cole
    Reply to this comment

  • Having done quite a bit of work for the FAA ( Federal Aviation Administration) and the mining industry, I am surprised that these two entities weren't included in the list. They both are not under local jurisdiction control, and they have their own codes and specs that must be observed and conformed to whenever work is being performed. I do not know, however, if this is the case on new construction. I do know that their own specs and codes are far more stringent, especially when it comes to grounding. I was talking with a friend about this who brought up his experience with the marine industry. Apparently there are issues with who has jurisdiction there also.

    Stacy Hinson
    Reply to this comment


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