Undersized main tails eicr code | on ElectriciansForums
Click here to remove these ads

Undersized main tails eicr code

Discuss Undersized main tails eicr code in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

W

Welchyboy1

-
Nearly Esteemed
Arms
Joined
Feb 26, 2013
Messages
1,038
Reaction score
987
Location
Essex
Undertaking an eicr on a small commercial unit, tpn 100a 1361 main fuses to tpn dist board, 16mm tails
i have only read the side of the fuse carriers not actually pulled the fuses to confirm

i have clamp metered the supply at a roughly peak time in the premises and had <30A across any one phase, and have inspected all supply terminations for the 16mm at all points after the meter and show no signs of heat or overload damage at all, and look in good condition, the install is around 20 years old

i have put a C3 for this

what would be your opinion?
 
Fourthed
 
I would give it a code 3 requires improvement with further investigations required and mark on you cert under limitations that the fuse size is as labeled
 
As above C3 with further investigation required. Either the tails are too small (which I doubt) or the fuse carrier is incorrectly labelled. You will probably find the supplier has fitted 80 amp fuses and not updated the label on the fuse carrier.
 
16mm is fine as long as the supply is not PME (TNCS) in which case 25mm is the minimum and would require a "requires attention", "does not comply with BS7671" code.
 

Reply to Undersized main tails eicr code in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

Similar Threads

R
Mains tails EICR coding
i notice you mention "fire rated" instead of "metallic" Are we talking about a metal consumer unit? I know its presumed... but just checking
Replies
4
Views
619
littlespark
littlespark
S
EICR in Flat - cross-connected circuits, T&E tails, composite earth
In the 80's I was taught that with PME earthing arrangements we used 16mm for the main earthing conductor, some went a bit crazy and were bonding...
Replies
11
Views
1K
7029 dave
7029 dave
N
  • Question
SUB MAIN QUESTIONS. ADVICE NEEDED
Not sure if I’ve understood this properly, but it appears to have parallels with my own installation. I highly dislike the idea of feeding SP...
2
Replies
49
Views
5K
Mark42
Mark42
S
Undersized main earth on eicr
2.5 is not suitable 4mm you could scratch your head and suck your teeth and possibly turn a blind eye but 2.5 no way
Replies
2
Views
3K
Dustydazzler
D
BodgeJob
Omission of overcurrent at origin of installation?
In years gone by many of us would feed an additional small CU [say for a shower or outbuilding for example] with 6mm tails, often directly...
Replies
6
Views
2K
Dave OCD
Dave OCD

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

Tilers Community
This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
NHS Forums | Forum for NHS Staff and NHS Patients
Back
Top
✖
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock    No Thanks