Register
Login
Button
home
store
cable engineering
my dashboard
my projects
my cables
help
<div class="btgrid"> <div class="row row-1"> <div class="col col-md-4"> <div class="content"> <p><img alt="" class="img img-responsive" src="/Portals/0/Images/Icons/cable_1.png" title="" /></p> </div> </div> <div class="col col-md-8"> <div class="content"> <p>Use the links on the left to access our cable sizing application. Manage and size all your cables, from low voltage to 33 kV.</p> </div> </div> </div> </div>
knowledge base
developers
support
faq & tickets
contact us
Articles
One topic per page
All topics one page
Export
Print
Email
Tweet
Symbols - Cable Derating Factors
Article
Discussion
C
a
for ambient temperature
C
c
for circuits buried in the ground
C
d
for depth of burial
C
f
for semi-enclosed fuse to BS 3036
C
g
for grouping
C
i
for thermal insulation
C
s
for thermal resistivity of soil
C
u
user defined derating factor
Comments
Add comment
Discussion is not enabled for this topic.
Previous
Next
CONTENTS
Toggle navigation
Knowledge Base
Cable Engineering
Cable Construction
CPR - Construction Products Regulation
Geometric Mean Distance
Impedance
Conductor Resistance
IEC 60228 DC Resistance
Inductance & Reactance
Cable Insulation
Elastomere Materials
Halogen Free Compounds
High Temperature Materials
Other Insulation
PE Insulation
PVC Insulation
Cable Sizing
Cable Derating (Factors)
Cable Sizing Standards
BS 7671
ERA 69-30
IEC 60502
Fictitious Dimensions
Solar Radiation Effects
Thermal Withstand
The adiabatic equation
Calculation of k Factor
I2t Thermal Withsand
Non-adiabatic effects
Voltage Drop
BS 7671 Voltage Drop
Dielectric loss in cables
Estimating Cable Life
Economic Optimisation of Cables
Fault Calculations
Circuit Protective Conductor (CPC)
Earth Fault Loop Impedance
IEC 60909 Fault Calculations
Network Fault Level
IEC 60287 Current Capacity of Cables - Introduction
Cable Sheath and Armour Loss
Cable Troughs
Derating Factors - cables grouped in air
Installation
Cable Supoort
Parallel Cables
Power Loss
Sheath Induced Votlage & Circulating Current
Thermal Analysis
Convection
Radiation
8 Steps to Low Voltage Power Cable Selection and Sizing
myCableEngineering
Application Overview
Cable Library
Supported Cables
Cable Schedule
Editing a cable
Linked Cables
Impedance Calculation
Voltage
Dashboard
Pricing Options
Project Management
Access and Permissions
Using Projects
Protective Devices
Reports
Support Articles
myCableEngineering vs Amtech vs ETAP
Relaiability & Backup Policy
Supported Browsers
Support Tip - Browser Cache
Video Tutorials
Cables and Accessories
API
API Help and Tips
API Input Parameters
API - Videos
Developer Tools
Cable Calculator
Release Notes [Cable Calculator]
Google Sheets - Electrical Functions
Useful Tables
Elctrical Resistivities & Temperature Coefficients
Metric AWG Conversion
Standard Wire and Cable Sizes
Supported Cables
Symbols
Symbols - Cable Construction
Symbols - Cable Derating Factors
Symbols - Cables
Symbols - Circuit Breakers
Symbols - Fault Calculations
Symbols - General
Symbols - Materials
Example Calculations
BS 7671 Voltage Drop Calculation
Cable Fault Calculation
Calculating Cable Performance (a.c.)
Calculating Cable Performance (d.c.)
Newsletter Subscription
Signup to our newsletter to receive site updates
Email Address:
Subscribe