Abbreviations

[StokieSpark]

I would like to start a thread on abbreviation's..

I see alot of thinks on here that dont mean alot to me like "DNO" "BRB"....

Please post me the abbreviations you know.

Thank you...

 

[rocker]

DNO is district network operator I think. It just means the electricity board.

I think BRB means 'be right back' lol.

Some I use regularly:

CU or C/U - consumer unit; 'fuse board'
S/O - socket outlet; "plug 'ole"
CPC - circuit protective conductor; " 'Erf "
MFT - Multi function tester

there are many more

 

[pevvers]

I think BRB means 'be right back' lol.

I can't quite tell whether you're joking or not.... But if you're not: -

BRB: Big red book AKA BS7671:2008 or the 17th edition of the wiring regulations

PIR: Periodic inspection report

EIC: Electrical installation certificate

MWC: Minor works certificate

EFLI: earth fault loop impedance

PFC: prospective fault current which is the higher of: -

PEFC: prospective earth fault current - between line and earth and: -

PSCC: prospective short circuit current - between line and neutral or line to line in a 3 phase system

FCU: fused connection unit (normally known as a fused spur)

DSSO: double switched socket outlet

SSSO: single switched socket outlet

DB: distribution board

DNO: district network operator - the people who own the cables, main cutout fuse etc.

OPD/CPD: overcurrent/circuit protective device - the MCB, RCBO or fuse

MCB: miniature circuit breaker

MCCB: moulded case circuit breaker (big circuit breaker normally used to protect submains, if relatively new they're BS 60947-2)

ACB: air circuit breaker (even bigger circuit breaker normally used at the
first point in LV panels in large commercial/industrial installations, again BSEN 60947-2 if relatively new)

OCB: oil circuit breaker (I know these exist, but never come across one, I think they may be only found in HV switching)

RCBO: residual current breaker with intergrated overcurrent protective device (i.e. an MCB with an integrated RCD)

SELV: Separated extra low voltage

PELV: Protective extra low voltage

FELV: Functional extra low voltage

VOELCB: Voltage operated earth leakage circuit breaker (old style of RCD you'll often find on ageing TT installations in the middle of the tails, looks like a big ugly RCD with a yellow test button - haven't been used since the early 80's and should really be replaced as the design was a bit rubbish)

Some of these you won't see on these forums, but they're all useful to know...

And I know that a few of them may be like teaching some people to suck eggs, but if help can be had then I'm happy!

 

[StokieSpark]

Erf, hehe.

 

[GrannySmiff]

Wtf? Imho,

lol.

 

[Hawk81]

another used on the forum alot is MET its means main earth terminal

 

[irishsailor]

DNO?? See it a lot

 

[pevvers]

DNO?? See it a lot

DNO is district network operator, what used to be called the LEB or local electricity board. The people who own the equipment at your supply, but not necessarily the same people who ask you for money for using the electric!

 

[rocker]

DNO?? See it a lot

As above

EDIT: beaten to it

 

[pevvers]

As above

EDIT: beaten to it

Sorry mate, went on a bit of a thread rampage!

 

[rocker]

you sure know your abbreviations

 

[pevvers]

There are many many more though. What would be useful is to put pictures of old MCB's, RCD's and switches and also give the BS number of them... I think that would help a lot of people out, but I haven't got the pics myself as I'm not really on the tools anymore.

 

[bugsy]

Often have to write fault codes for clients programming problems most common is the ID / TEN / T fault.

any idea's ?

 

[pevvers]

Yup, I sure do know that one...

 

[bugsy]

Shall we offer a prize for the correct answer?