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LV Power Distribution Design

  • Date(s)
    Monday, 18 November 2019
  • Time(s)
    9:00 AM - 5:30 PM
  • Venue
    Engineers Ireland, 22 Clyde Road, Ballsbridge, Dublin 4, Ireland
  • Fee

    Members: €345
    Non-Members: €395

    NOTE: You can only book online using credit or debit card details.  If your preferred method of payment is by invoice / purchase order / bank transfer / other, please contact the CPD Training Team on 01-6651305, or email to secure a place.

  • CPD Credit
    7 hours   C1


This course provides an overview of the design of low voltage power distribution systems for buildings. 


The aim of this course is to give electrical engineers an understanding of the principle aspects of LV distribution design with particular emphasis on design and selection of the LV switchgear system.
This course will benefit electrical engineers and contractors involved in the supply chain of electrical services for buildings.

Learning Objectives

At the end of the course attendees will have learned 
LV Distribution System – Typical applications
Awareness of the main standards relative to LV switchgear
How to design LV distribution boards
How to select appropriate protective devices
How to select the Power Factor Correction Equipment


Course Programme

Part 1 – Design of the LV Distribution System - Typical Applications
Residential / Apartments
Office Block
Industrial Premises
Mission critical sites with UPS and Generator systems.
Part 2 – LV Switchgear Standards
Overview of IEC Standard 61439 Part 1 &2 
Overview of ETCI - “Code of Practice” LV Switchboards ET201: 2005” 
Other Publications
Part 3 – Design of Main LV - Switchboards 
Enclosure, compartmentation, form of separation, degree of protection
Busbars compartments, clearance and creepage distances
ESB metering compartments 
Protective devices - Switchfuses, MCCBs and ACBs 
Protective devices – Coordination and Discrimination
Automatic transfer switches - ATSs
Mechanical and electrical interlocking of switches and breakers 
Surge protection devices - SPDs
Double ended main LV switchboards 
Approximate sizing of LV switchboards
Part 4 – Design of Final Distribution Boards 
Cabinet type distribution boards
Pan assembly type distribution boards  
Consumer unit type distribution boards 
Final circuit protective devices:- MCBs, RCBOs etc.
Part 5 - Busbar Trunking Systems
Lighting busbar trunking
Main power busbar systems
Tap off boxes and final power connection to load
Part 6 Power Factor Correction Equipment
Power factor analysis 
Calculation of VARs
Capacitors, reactors, detuned systems
Reactive power regulator

Other CPD Courses in this Series

  • Role of the M&E Consultant
  • Data Centres - Introduction to M&E Services
  • MV Power Distribution Design


Trainer Profile

Brendan Dervan is a Chartered Engineer with over 40 years’ experience in all aspects of mechanical and electrical building services including; design, installation, commissioning and maintenance. After completing an electrical apprenticeship in 1982 he went on to study electrical engineering in DIT. He has worked in M&E consultancy at senior engineer / director level since 1990. In 1999 he started his own M&E consultancy Dervan Engineering Consultants (DEC) which merged with Cundall in 2016. His Company provided M&E consultancy and project management services to a diverse range of clients in both the public and private sectors. 

Make a Booking

18 November 2019


Confirmation is subject to event fee being finalised. Cancellation fees calculated at 50% of the estimated total bill will be charge for confirmed bookings cancelled less than 5 working days prior to the date of the planned event. A replacement person can attend instead. Cancellations made the day prior to an event will be charged 75% of the total estimated bill. No-shows will be charged the full fee. All cancellations must be confirmed in writing by email. Engineers Ireland will not be liable for any costs in the event of a course being re-scheduled.  This applies, but is not limited, to any travelling, subsistence or consequential expenses incurred by delegates.