Inst ToolsInst ToolsInst Tools
  • Ask
  • Courses
  • Videos
  • Q & A
    • Interview
      • Instrumentation
      • Electronics
      • Electrical
      • Practical Questions
    • MCQ
      • Instrumentation MCQ
      • Electrical MCQ
      • Electronics MCQ
      • Control Systems MCQ
      • Analog Electronics MCQ
      • Digital Electronics MCQ
      • Power Electronics MCQ
      • Microprocessor MCQ
      • Multiple Choice Questions
  • EE
    • Electronics
      • Electronics Q & A
      • Electronic Basics
      • Electronic Devices & Circuits
      • Electronics Animation
      • Digital Electronics
    • Electrical
      • Electrical Basics
      • Electrical Q & A
      • Power Electronics
      • Electrical Machines
      • Electrical Animation
      • Power Systems
      • Switchgear & Protection
      • Transmission & Distribution
  • Measure
    • Control Valves
    • Calibration
    • Temperature
    • Pressure
    • Flow
    • Level
    • Analyzers
    • Switches
    • Vibration
    • Solenoid Valve
  • Control
    • PLC Tutorials
    • Control Systems
    • Safety Instrumented System (SIS)
    • Communication
    • Fire & Gas System
  • More
    • Design
    • Tools
    • Animation
    • Basics
    • Formulas
    • Standards
    • TextBooks
    • Common
    • Software
    • Excel Tools
    • Erection & Commissioning
    • Process Fundamentals
    • Videos
    • Books
Search
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Reading: Tagging Philosophy for Junction Box, Cable, and Cable Drum
Share
Notification Show More
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • PLC Tutorials
  • Control Systems
Search
  • Ask
  • Courses
  • Videos
  • Q & A
    • Interview
    • MCQ
  • EE
    • Electronics
    • Electrical
  • Measure
    • Control Valves
    • Calibration
    • Temperature
    • Pressure
    • Flow
    • Level
    • Analyzers
    • Switches
    • Vibration
    • Solenoid Valve
  • Control
    • PLC Tutorials
    • Control Systems
    • Safety Instrumented System (SIS)
    • Communication
    • Fire & Gas System
  • More
    • Design
    • Tools
    • Animation
    • Basics
    • Formulas
    • Standards
    • TextBooks
    • Common
    • Software
    • Excel Tools
    • Erection & Commissioning
    • Process Fundamentals
    • Videos
    • Books
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Instrumentation Design > Tagging Philosophy for Junction Box, Cable, and Cable Drum

Tagging Philosophy for Junction Box, Cable, and Cable Drum

In this article, we are going to discuss the tagging philosophy for junction boxes, cables, and cable drums.

Last updated: October 17, 2023 3:42 pm
Editorial Staff
Instrumentation Design
No Comments
Share
4 Min Read
SHARE

Tagging of the junction box, cables, and cable drums is very important during front-end engineering design for the preparation of the JB schedule, cable schedule, cable drum schedule, etc.

Contents
Junction Box TaggingUnit NumberJunction Box CodeJunction Box ScheduleCable TaggingField Instrument to Junction BoxJunction Box to Control RoomCable ScheduleInstrument Cable Drum TaggingCable CodeCable Drum Schedule

In this article, we are going to discuss the tagging philosophy for junction boxes, cables, and cable drums.

Junction Box Tagging

Junction Box Numbering

The given above is the basic structure of junction Box tagging philosophy

It includes,

  • Unit Number
  • Junction Box Code
  • Sequence Number

Unit Number

Refer to the below article for details regarding the unit number

Instrument Numbering Philosophy

Junction Box Code

Each junction box is associated with an instrumented facility comprising of a series of letters depicting that junction box details based on the type of signals.

Below table indicates some of the junction box types

LETTERTYPE OF SIGNAL
JBAAlarm (BPCS)
JBEAnalogue (BPCS)
JBSControl – Solenoid Outputs (BPCS)
JBFFFieldbus Foundation (BPCS)
JBAXAlarm (SIS)
JBEXAnalogue (SIS)
JBSXControl – Solenoid Outputs (SIS)
JBAFAlarm (F&G)
JBEFAnalogue (F&G)
JBPFPower (F&G)

Also Read: Instrumentation Project Documents

Junction Box Schedule

Junction Box Schedule

Reference drawings required for the preparation of the JB Schedule are

  • Specifications for instrument junction boxes
  • Specifications for cable glands
  • Instrument cable schedule
  • Junction box tagging philosophy

Cable Tagging

The below discussed the different ways where we used the cable tagging.

Field Instrument to Junction Box

Individual cables running between field instruments and junction boxes are normally identified by the instrument tag number itself.

Example:

Field Instrument Unit Number

Junction Box to Control Room

The below image shows the basic structure of cable tagging for cables from the junction box to the control room.

Basic Structure of Cable Tagging for Cables

It includes,

  • Unit Number
  • Junction Box Code
  • Sequence Number of Cable
  • Cable Suffix

Cable Schedule

Signal Cable Schedule

Reference drawings required for the preparation of the cable schedule are

  • Instrumentation Index
  • Cable Tagging Philosophy
  • Cable and Junction Box Specification
  • Instrumentation Design Basis 

Instrument Cable Drum Tagging

Instrument Cable Drum Tagging

Given above is the basic structure of the Instrument cable drum numbering system.

It includes,

  • Zone
  • Cable Drum Number
  • Sub-Contractor Name
  • Cable Code
  • Sequence Number

Cable Code

Cable code indicates all details regarding that cable type. There is always a description associated with each cable code.

Given below is an example of cable type and description

Cable Code

Zone details and subcontractor details are entered as per the project execution details.

Cable Drum Schedule

Cable Drum Schedule

Reference drawings required for the preparation of cable drum schedule are,

  • Specification for Instrument Cables
  • Cable Drum Tagging Philosophy
  • Instrumentation Design Basis
  • Instrument Cable Schedule
  • Instrument Index
  • Fire & Gas Index

Author: Greeshmesh TP

If you liked this article, then please subscribe to our YouTube Channel for Instrumentation, Electrical, PLC, and SCADA video tutorials.

You can also follow us on Facebook and Twitter to receive daily updates.

Read Next:

  • SIL Verification
  • How to Choose UPS?
  • Instrument Junction Box
  • Instruments Tapping Points
  • Instrumentation Design Engineer
Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !
All About Variable Area Flow Meters
How to Select a Pressure Gauge
Instrumentation and Control (I&C) Design
Control Valve Selection Tips
Process Design of Instrument Air System
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
Leave a Comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
208kSubscribersSubscribe
38kFollowersFollow

Categories

Recent Comments

  • Guifty Shimica on Top Non-PLC Certification Courses for Automation Professionals
  • Guifty Shimica on Top Non-PLC Certification Courses for Automation Professionals
  • MIHARITSOA Aina Sitraka on Top Non-PLC Certification Courses for Automation Professionals
  • Vaishnavi on Free Instrumentation Course for Trainee Engineers

Related Articles

Instrumentation Cable trays in Horizontal Installation

Instrumentation Cable trays Installation in vertical orientation

Basic Principles of Electricity

Basic Principles of Electricity

Pressure Switch Terminology

Pressure Switch Terminology

Sample Schematic Template for Systems Architecture Diagram

Design Document for Project Systems Architecture

How to Select a pH and ORP Meter

How to Select a pH or ORP Meter

Pre-Engineering Design Documents

Industrial Automation Pre-Engineering Design Documents – Project & Process

Control systems in industrial projects

Interactions With Process Control Systems Philosophy

Fail Safe Switch Circuit

Basics of Fail-safe Circuits

More Articles

Latching and Unlatching in PLC Programming for Beginners

Latching and Unlatching in PLC Programming Example

Single Phase Induction Motors Questions and Answers

Single Phase Induction Motors Questions and Answers

Repeat Safety Valve Popping

Repeat Safety Valve Popping caused Urea Plant Shutdown

Thermocouple Calibration

Thermocouple Calibration

Infrared Spectrometers Questions & Answers

Infrared Spectrometers Questions & Answers

Difference between LVDT and RVDT

Difference between LVDT and RVDT?

Fire Alarm System Commissioning Procedure

Fire Alarm System Commissioning Procedure

Technical Specification for Uninterrupted Power Supply (UPS) System

Technical Specification for Uninterrupted Power Supply (UPS) System

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?