.net barcode recognition GROUNDING OVERHEAD SERVICE in Software

Generation Quick Response Code in Software GROUNDING OVERHEAD SERVICE

GROUNDING OVERHEAD SERVICE
Generating QR Code JIS X 0510 In None
Using Barcode creation for Software Control to generate, create QR Code JIS X 0510 image in Software applications.
Read QR Code 2d Barcode In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
A household electrical system is grounded through a grounding rod driven into the earth, as shown in Fig 5-6, a diagram applicable to all overhead service This figure supple-
Generate QR In Visual C#.NET
Using Barcode maker for Visual Studio .NET Control to generate, create Denso QR Bar Code image in Visual Studio .NET applications.
Printing QR Code 2d Barcode In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create Denso QR Bar Code image in ASP.NET applications.
Figure 5-5 A 200-A through-roof service entrance Layouts for 100 and 175 A are similar except that the SE cables have lower ratings
QR Code JIS X 0510 Creator In Visual Studio .NET
Using Barcode printer for VS .NET Control to generate, create QR Code image in Visual Studio .NET applications.
Making QR Code JIS X 0510 In VB.NET
Using Barcode generation for .NET Control to generate, create Denso QR Bar Code image in .NET framework applications.
TLFeBOOK
Paint USS Code 39 In None
Using Barcode creator for Software Control to generate, create Code-39 image in Software applications.
Data Matrix Printer In None
Using Barcode generation for Software Control to generate, create Data Matrix image in Software applications.
UNDERGROUND ELECTRICAL SERVICE
Encoding EAN128 In None
Using Barcode maker for Software Control to generate, create EAN / UCC - 13 image in Software applications.
Code-128 Drawer In None
Using Barcode generator for Software Control to generate, create USS Code 128 image in Software applications.
Figure 5-6 Riser layout for a typical overhead service entrance, giving dimensions and grounding details
Bar Code Generator In None
Using Barcode drawer for Software Control to generate, create barcode image in Software applications.
Generating Barcode In None
Using Barcode creation for Software Control to generate, create bar code image in Software applications.
ments the information given in Figs 5-3, 5-4, and 5-5, and all the dimensional limits are those approved by NEC 2002 The options available for installing an approved ground in accordance with NEC 2002 are discussed in detail later in this chapter
Painting International Standard Serial Number In None
Using Barcode generation for Software Control to generate, create ISSN - 13 image in Software applications.
Print Matrix Barcode In VB.NET
Using Barcode creation for .NET framework Control to generate, create Matrix Barcode image in Visual Studio .NET applications.
Underground Electrical Service
Barcode Creator In Java
Using Barcode encoder for Java Control to generate, create bar code image in Java applications.
Read UPCA In C#.NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in VS .NET applications.
A general overview of underground or buried electrical service is shown in Fig 5-7 This service is becoming more popular in new housing developments and industrial parks, although it has been in use for more than a half-century in large cities The typical hot
Read Code 39 Extended In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
Print GTIN - 13 In Java
Using Barcode creation for Java Control to generate, create EAN13 image in Java applications.
TLFeBOOK
UPC Symbol Recognizer In Visual Studio .NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in VS .NET applications.
Encoding EAN128 In None
Using Barcode generator for Online Control to generate, create GS1 128 image in Online applications.
SERVICE ENTRANCE, LOADCENTERS, AND GROUNDING
Figure 5-7 Underground service provides electric power from a padmounted transformer via a service lateral to the service point
secondary distribution line that reaches a residential area, for either underground or overhead service, is a single-phase, high-voltage conductor It usually reaches an aboveground pad-mounted transformer that transforms this voltage to 120/240 V AC The electrical schematic for a pad-mounted, single-phase transformer is identical to that shown in Fig 5-2 These transformers, like overhead transformers, are located in positions where they can serve many customers The pad-mounted transformer distributes 120/240 V AC to the meter base via a buried cable or service lateral The approved cable for underground service is underground service entrance (USE) cable, a modified form of SE cable It has three insulated conductors because the neutral/grounding conductor must be insulated In an underground feed, the two insulated hot conductors and grounded neutral conductor are run from the pad-mounted transformer back underground either direct-buried or in conduit When the cable reaches the foundation of the building being served, it must be brought up through a length of conduit from below grade to the meter base The definitions of the terms service entrance and service point are modified when they to apply to underground electrical service (See Figs 3-8 and 3-14 for more technical details on overhead transformers)
UNDERGROUND SERVICE CONNECTIONS AND GROUNDING
More details about the installation of an underground service lateral for 200-A service are given in Fig 5-8 Here again, all dimensions and limits are those approved by NEC 2002 The details for 175- and 100-A underground service are identical except for the lower ratings of their USE cable Underground service must be properly grounded, and the details are identical to those required for overhead service, as shown in Fig 5-6
TLFeBOOK
SERVICE ENTRANCE CABLE
Figure 5-8 Underground service lateral rated for 200 A: layouts for 100 and 175 A are similar, but they have lower-rated underground service entrance (USE) cables
The options available for installing an approved ground in accordance with NEC requirements are discussed in detail later in this chapter
Service Entrance Cable
Type SE (service entrance) cable contains two separate insulated wires and a bare grounding cable It conducts power into the home or building from the service drop splices described previously SE cable is available in three different styles: U, R, and USE All are rated for 600 V SE cable is covered in NEC 2002, Article 338, ServiceEntrance Cable: Types SE and USE This brief descriptive information is supplemented by more technical details in Chap 6 of this handbook Type SE cable has a flame-retardant, moisture-resistant covering Its installation requirements are in NEC Article 230, Services Type USE cable is for underground use It has a moisture-resistant covering, but flame-retardant covering is not required It can emerge from the ground outside the terminations in meter bases or other enclosures where protected in accordance with NEC 2002, Section 3005(D), Protection from Damage
Copyright © OnBarcode.com . All rights reserved.