builders supply- amendment 3 | Page 3 | on ElectriciansForums
Guest viewing is limited

builders supply- amendment 3

Post new thread

Discuss builders supply- amendment 3 in the UK Electrical Forum area at ElectriciansForums.net

J

J.C.E

-
Arms
Joined
Dec 2, 2010
Messages
832
Reaction score
158
Location
Earth
afternoon

first time since amendment 3 came out that I have had to install a TT system

I need to install site temps on a plot of land ready for new build flats.

UKPN will be installing a new PME temp supply

Am I right in thinking I am ok to take my tails through a nylon Wiska tail gland- through a amendment 3 board using a clamp. with a 100ma timed delay main switch.

then 30ma RCBO any of the circuits out of here that need them. think they are getting site cabins with pre wired boards in them anyway.

Cheers
 
Sort by date Sort by votes
cliffed said:
Not again,a metal DB fine too....
Click to expand...
Yes either metal or plastic is fine but additional precautions must be taken if you opt for metal. IMO in the Op’s Situation I would of used an IP rated plastic board like I linked to. I don’t understand really why you would want to introduce a potential that wouldn’t exist if a plastic board was installed...especially on a building site where things regularly get knocked/pulled about. Maybe the difference is actually understanding and going above and beyond the Bare minimum.
 
Upvote 0 Downvote
[ElectriciansForums.net] builders supply- amendment 3

Alright @cliffed - let it go. It’s a temporary supply. We don’t want to get it scratched.
 
Upvote 0 Downvote
Hi all
It is TT so at the meter position use a 300ma to 500ma RCD linked to a SPD in a plastic enclosure. DO NOT USE METAL AS THERE IS NO RESETABLE SAFETY CUTOUT BETWEEN THIS AND THE SUPPLY!! Any fault prior to the incoming RCD with blow the Supply Company fuse resulting in site black-out and a call out charge, not to mention blue language.
Earthing at this point must be to a dedicated earth spike and make sure the earth is good.
The SPD is necessary as if there is a lightning strike on the TT supply anybody working on rebar gets fried!
The choice of DBs after this is up to the installer.
 
Upvote 0 Downvote
OldSparks said:
Hi all
It is TT so at the meter position use a 300ma to 500ma RCD linked to a SPD in a plastic enclosure. DO NOT USE METAL AS THERE IS NO RESETABLE SAFETY CUTOUT BETWEEN THIS AND THE SUPPLY!! Any fault prior to the incoming RCD with blow the Supply Company fuse resulting in site black-out and a call out charge, not to mention blue language.
Earthing at this point must be to a dedicated earth spike and make sure the earth is good.
The SPD is necessary as if there is a lightning strike on the TT supply anybody working on rebar gets fried!
The choice of DBs after this is up to the installer.
Click to expand...
Probability of the fault scenario ,quite small,using appropriate cleats etc,would minimise this,still a metal DB for me.
 
Upvote 0 Downvote

Reply to builders supply- amendment 3 in the UK Electrical Forum area at ElectriciansForums.net

Similar threads

J
  • Question
3 phase TPN boards - earthing TT
I'm assuming the cable will have to be cleated well to hold it in place anyway, as a stuffing gland ain't going to hold it tight like a SWA gland...
Replies
10
Views
660
pc1966
P
B
  • Question
UK RCD Protecting Distribution Cables on a TT on Industrial Estate
much more information required. Is the supply to the first building a DNO supply or a sub main cable from another building ? if it is a sub main...
Replies
5
Views
919
MDJ
MDJ

Recommended Sponsor News

Exclusive Forum Offer! Free euro 2024 wall chart for first 10 responses!

Hi everyone,

We have 10 exclusive Uheat EURO 2024 Wallcharts to giveaway for Electricians Forum Members! The first 10 people to reply YES to this thread - I will message and get them sent out to you just in time for this years tournament! GO GO GO

Quickwire Now Sponsor ElectriciansForums.net

I am sure you will join me in welcoming our newest sponsors of ElectriciansForums.net - Quickwire! They have decided to join us after seeing you guys discussing their products here. Now we have an expert on board that you can chat to @Quickwire-Sam who will be happy to answer your queries!

[ElectriciansForums.net] Quickwire Now Sponsor ElectriciansForums.net


@Quickwire-Sam said "At Quickwire, we're all about speed, safety, and reliability. We're a family-run business, and every Quickwire connector is proudly made right here in the UK, ensuring noticeable quality. In short, Quickwire is the fastest connection method on the market. Whether you're an experienced electrician or a DIY enthusiast, Quickwire makes electrical connections ridiculously quick and easy. We're passionate about blending British craftsmanship with innovation. If you have any questions or if there's any way we can help, please just ask me!"

PCBWay Now Sponsor ElectriciansForums.net!!

I hope you will all join me in welcoming our newest sponsor to the forum PCBWay! You can contact their friendly people by sending a message to @PCBWay who will be happy to answer your queries.

Welcome to the community and thanks for your sponsorship!

[ElectriciansForums.net] PCBWay Now Sponsor ElectriciansForums.net!!

PCBWay provides services including PCB Prototype and batch Production, PCB Assembly (SMT), 3D Printing, CNC Machining, PCB Design, Electronics Modules Selling, etc. We are committed to meeting the needs of global makers from different industries in terms of quality, delivery, cost-effectiveness, and any other demanding requests in electronics.

[ElectriciansForums.net] PCBWay Now Sponsor ElectriciansForums.net!!

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

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top