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Acronyms for the electrically challenged


polarity
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As a non professional Sparky but with more than a passing interest, I am really enjoying these forums. One thing that I do find a bit of an issue is all the Acronyms - some of which are industry specific and some of which are just "short for" on the board. Not being one to complain and do nothing about it I thought I would start a list.

This is designed to be explanatory rather than technically comprehensive or exact. There are bits missing and vague that I hope people will add to and correct. Otherwise hope someone find it useful.

AC - Alternating Current Normal household electricity

AFAIK / AFAIAC - As far as I know / As far as I am concerned.

BC - Building Control

BCO - Building Control Officer

BRB - big red book (17th edition guidance)

BS7671 - This is the current wiring regulations now 2008 and commonly known as the 17th edition.

BTW - By the way

C&G - City and Guilds

ccts - circuits or certificates

CCU - Cooker Connection Unit

CPC - circuit protective conductor, Earth, ie the yellow and/or green wire

CPD - Circuit Protective Device

CSA - Cross Sectional Area -"size" as in CSA is/isn't important i

CU - Consumer Unit the thing usually next to the meter with all the electrical switches in it.

DB - distribution board

DC - Direct current what comes in and out of a battery, and some, usually low voltage, devices

DEI - Domestic Electrical Installer yer household electrician.

DI - Domestic Installer

Edited by polarity
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Good man!

SSO - single socket outlet

DSO - double socket outlet

TP - three phase or triple pole

ELECSA - another friendly certifying body

BRB - big red book (17th edition guidance)

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CPC - circuit protective conducter

Ze - external loop impedance... (Path that earth fault will take back to the star point of transformer)

Zs - eath fault loop impedance... (Path of earth fault back to main earthing point)

R1+R2 - value of phase and cpc linked together while testing

Guiness Drink

and not forgeting CN - Central Networks :P:coat

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As a non professional Sparky but with more than a passing interest, I am really enjoying these forums. One thing that I do find a bit of an issue is all the Acronyms - some of which are industry specific and some of which are just "short for" on the board. Not being one to complain and do nothing about it I thought I would start a list.

This is designed to be explanatory rather than technically comprehensive or exact. There are bits missing and vague that I hope people will add to and correct. Otherwise hope someone find it useful.

AC - Alternating Current - Normal household electricity

BC - Building Control

BCO - Building Control Officer

BS7671 - The rules that say how electrical installations should be done, tested and inspected, now in its 17th Edition.

This is the current wiring regulations now 2008 and commonly known as the 17th edition.

C&G - City and Guilds

ccts - circuits (probably...)

CPC - Consumer Protection Conductor - Earth, ie the yellow and/or green wire

Circuit Protective Conductor commonly refered to earth.

CSA - Cross Sectional Area - ie "size" as in CSA is/isn't important

CU - Consumer Unit - the thing usually next to the meter with all the electrical switches in it.

DC - Direct current - what comes in and out of a battery, and some, usually low voltage, devices

DEI - Domestic Electrical Installer - yer household electrician.

DIN Rail - Standardised 35mm metal rail for mounting RCDs,RCBOs, MCBs and other electrical stuff on usually found in CUs (now you see the reason for this list!)

DNO - Distribution Network Operator - your local electrical company

DP - Double Pole - usually related to switches that switch both Neutral and Live off. 3P is 3 poles - eg used for isolating bathroom fans that have 2 live feeds.

EIC - Electrical Installation Certificate, see this post for the full low down: http://www.talk.electricianforum.co.uk/showpost.php?p=70074&postcount=22

GFI - Ground Fault Interrupter - American RCD

IEE - Institute of Electrical Engineers

JB - Junction Box

LABC - Local Area Building Control

LBC - Local Building Control

MCB - Glorified fuse, a switch that automatically turns off when it is overloaded and unlike a fuse can be turned back on when you unplug the hamster that shorted out the toaster.

Stands for Miniture circuit breaker

NICEIC - Organisation of Electrical people

National Inspection Council for Electrical Installation Contracting

OP - Original Poster - ie the person that started the thread way back before it went all OT (Off Topic)

Part P (the rules) - Some one else please explain, in less than 200 words...

Building regulations pertaining to electrical safety

Part P- (the qualification) ditto

Person who is registered with on of the governing bodies regulated by the government, who can self certify work in the home

PIR - Passive Infrared ie one of those sensors that either a) switches the security light on when you approach the house or B) switches the security light on when a moth flies in front of it.

PIR - Periodic Inspection Report - the same list of problems with your electrical installation, but made by a professional

PME old acronym for TN-C-S a method of Earthing see TT etc link

Protective Multiple Earthing

PSU - Power Supply Unit - a box that takes in one type of power (eg household) and puts out another (eg the stuff your computer actually runs on)

RCBO - a combination RCD and MCB

RCD - Residual Current device - a switch that automatically switches off if there is an earth fault - eg you bang a nail into a hidden cable whilst hanging that picture of Auntie Mildred

SDS - Those big beefy drills that are also mini jack hammers

SELV - "Separated (or Safety) Extra Low Voltage" - "Extra Low Voltage" is not exceeding 50v AC and "Separate" as in via a transformer. eg 12v lighting or bathroom fan, see http://www.talk.electricianforum.co.uk/showpost.php?p=53560&postcount=14 for more detail.

SF - Screw Fix

SWA - Steel Wired Armoured - cable for outside, being buried etc.

T&E - Twin and earth - ie the grey 3 wire cable used in your house.

TT, TNS, TN-C-S - Descriptions of various ways of connecting the house to earth (the T is for "Terre" ie Earth/Ground) see this post for a full explanation http://www.talk.electricianforum.co.uk/showpost.php?p=69165&postcount=21

Ze,Zs,R1,R2 - Someone else to explain simply please...

Ze is the earth external to the installation, Zs is the fault loop internal and effected by the installation,R1 is the continuity of the phase conductor,R2 is the continuity of the cpc or circuit protective conductor.

Cheers!

Paul

Good list I could have gone through the meaning od sds and others but the main electrical stuf is there.

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Very good, here are some minor corrections & some additions

AC - NICEIC approved contractor

CPC - circuit protective conductor

DI - Domestic installer

IEE - Institute of electrical engineers (now the IET)

Part P - Building regulations which apply to all domestic electrical installations, all work comes under these regs, but only some types of work are notifyable

Part P - Qualification.... there isn't one really, although some training providers are doing this type of course which is described as an entry level qualification for scheme membership.... you still need to have an annual assessment by a scheme provider

Ze - the resistance of the line/earth from the consumers connection back to the generator/local transformer (inc the transformer windings)

R1 - the resistance of a circuits line conductor

R2 - the resistance of a circuits earth conductor

Zs = Ze+(R1+R2)

r1 - the resistance of the line conductor in a ring circuit (end to end)

r2 - the resistance of the earth conductor in a ring circuit (end to end)

rn - the resistance of the neutral conductor in a ring circuit (end to end)

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There's NAPIT too

Worth noting that phase/live/line are synonymous!

OSG - on site guide

MFT - Multi-function tester

IR - insulation resistance

ccts - circuits or certificates

IP** - ingress protection, followed by 2 numbers

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This trade must be the worst for using all these acronyms , then just as you get used to one ,they change it ( PME = TNCS You need to speak Latin to find that T stands for Terra =earth ) Or new ones appear from nowhere , I think what the hell is this guy waffling about , such as MET , Main Earth Terminal apparently , Itend to call it the Main Earth Terminal !! What I call an earth wire others call a CCP now. We used to check loop impedance now its called Zs .

Don't even start me on the organisations attatched to the trade.

ECA , JIB, EEPTU, IEE, NICEIC, ELECSA, NAPITT , Oh! SODITT, they go on forever.

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MICC

Mineral Insulated Copper Cable.

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This trade must be the worst for using all these acronyms , then just as you get used to one ,they change it ( PME = TNCS You need to speak Latin to find that T stands for Terra =earth ) Or new ones appear from nowhere , I think what the hell is this guy waffling about , such as MET , Main Earth Terminal apparently , Itend to call it the Main Earth Terminal !! What I call an earth wire others call a CCP now. We used to check loop impedance now its called Zs .

Don't even start me on the organisations attatched to the trade.

ECA , JIB, EEPTU, IEE, NICEIC, ELECSA, NAPITT , Oh! SODITT, they go on forever.

If you want abbreviations I can give you plenty! If I get the letters wrong we remove the wrong bit of bone or give the medicine every 3 hours! There are thousands of vet and medical abbreviations! You have it easy!

BTW it's strictly only an acronym if the abbreviated letters make a word - like DIN rail. ;)

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You're right Patch.

Like PLUTO from World War 2. A prize if you get it right .

What does DIN stand for then Patch, I have no idea.

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You're right Patch.

Like PLUTO from World War 2. A prize if you get it right .

What does DIN stand for then Patch, I have no idea.

Pipe lines under the ocean

DIN - Deutsches Institut f

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OK you win a prize and now I know about the DIN standard.

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You're right Patch.

Like PLUTO from World War 2. A prize if you get it right .

What does DIN stand for then Patch, I have no idea.

Started in Shell Stanlow in Cheshire down to the south coast and then under the channel to France. Built for D-Day landings.

Pipeline is still in situ,:YGuiness Drink

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Not to forget:

CCU Cooker Conection Unit

CPD Circuit Protective Device

FCU Fused Connection Unit

SCU Switched Connection Unit

SFCU Switched Fused Connection Unit

MEBC Main Equipotential Bonding Conductor

MET Main Earth Terminal

PEN Protective Earth and Neutral

PME is Protective Multiple Earth, which I think you'll find is the new TN-C-S

RCCBO Residual Current Circuit Breaker with Overload protection

RCCD Residual Current Circuit Device

RCD Residual Current Device

With TT, TN-C, TN-S, TN-C-S and IT. The T refers to Terra (Earth), so TT is basicaly Earthed Earth, TN-C is Earth Neutral Combined, TN-S is Earth Neutral Seperated, TN-C-S is Earth Neutral Combined then Separated and IT is Isolated Earth.

TP&N Three Phase & Neutral

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MIMS - Mineral Insulated Metal Sheath. See also MICC. See also Pyro.

PYRO - Abbreviation for Pyrotenax, a generic term for the MIMS / MICC cable type.

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DB - distribution board

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This trade must be the worst for using all these acronyms , then just as you get used to one ,they change it ( PME = TNCS You need to speak Latin to find that T stands for Terra =earth ) Or new ones appear from nowhere , I think what the hell is this guy waffling about , such as MET , Main Earth Terminal apparently , Itend to call it the Main Earth Terminal !! What I call an earth wire others call a CCP now. We used to check loop impedance now its called Zs .

Don't even start me on the organisations attatched to the trade.

ECA , JIB, EEPTU, IEE, NICEIC, ELECSA, NAPITT , Oh! SODITT, they go on forever.

Don't forget the most important one BSI.

:D

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The acronym C R I P P L E R

Continuity of cpc and bonding conductors

Ring continuity

I.R test

Polarity DEAD test

Polarity LIVE test

Loop impedance test, Ze and Zs

Earth fault and PSC fault current

Rcd and other functinal tests

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Hello chaps

I decided to give myself a theory refresher and give Scadden another read through

first few pages I came across PLCs

Now here's one that nobody on the forum has on their list, I thought

If only I knew what it was?

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