ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
VDE 0100 to introduce AFCIs
by sparky. 01/20/18 05:09 PM
MRI LED lights dimmer control replacement - wow!
by Potseal. 01/19/18 08:52 PM
Video: Inventor of the GFCI self-testing shocks
by Bill Addiss. 01/17/18 11:11 PM
FPE in Germany
by HotLine1. 01/17/18 07:07 PM
Fujifilm Recalls Power Adapter Wall Plugs
by Admin. 01/16/18 07:04 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 3 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
Down Under Wiring #134070
10/24/02 01:33 AM
10/24/02 01:33 AM
Trumpy  Offline
OP
Member
Joined: Jul 2002
Posts: 8,231
SI,New Zealand
Even with all of the messages that I did recieve, over this topic, I do not think that I actually answered some of them.


[This message has been edited by Trumpy (edited 10-27-2002).]

[This message has been edited by Trumpy (edited 10-29-2002).]

Test Equipment:
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement
Re: Down Under Wiring #134071
10/26/02 11:21 PM
10/26/02 11:21 PM
Trumpy  Offline
OP
Member
Joined: Jul 2002
Posts: 8,231
SI,New Zealand
In terms of voltage drop, these figures are derived from the point of supply to the main switchboard.
All general-purpose outlets over here are rated @ 10A, if you need to have a larger appliance on a socket-outlet, you can use either a 15A or 20A socket-outlet, but the S/outlet must be fed from a dedicated circuit, and protected appropriately.
Only a Range/cooker may be run off a 25 or
32A circuit. [Linked Image]

Re: Down Under Wiring #134072
11/04/02 10:51 AM
11/04/02 10:51 AM
C
C-H  Offline
Member
Joined: Sep 2002
Posts: 1,497
Stockholm, Sweden
I just remembered one question I think wasn't asked or wasn't answered:

What do your switchboards look like?

Re: Down Under Wiring #134073
11/07/02 01:25 AM
11/07/02 01:25 AM
Trumpy  Offline
OP
Member
Joined: Jul 2002
Posts: 8,231
SI,New Zealand
C-H,
Sorry if you were not replied to, but there
just so many people wanting information.
No worries, however, with regard to S/Boards, it depends on what type of board you are talking about.
In Domestic Installations, a switchboard,
must be only of a type that MCB's(Minature
Circuit Breakers), can be fitted to, this is a breath of fresh for us guys over here, that have had to deal with porcelain fuse-holders, carrying a simple tinned-copper fusewire.
Wearing Live-Gloves, when replacing these fuses, is a requirement, if there is still a fault on the circuit.
Commercial and Industrial boards are normally made up by specialist switch-board builders, they do a really good job, this is important, if you have a 400V, 1000A sub-
main board to wire and test.
Sorry, but I can show you no pictures of the quality of the workmanship, it's impressive. [Linked Image]

Re: Down Under Wiring #134074
11/09/02 11:17 PM
11/09/02 11:17 PM
Trumpy  Offline
OP
Member
Joined: Jul 2002
Posts: 8,231
SI,New Zealand
Believe you me C-H,
us younger Electrical people, are exposed to all of the sins of our forebears.
Ever worked on a switch-board made out of solid marble, Two inch thick, and to install a single MCB,safebase, takes about 30-45 minutes, once you have drilled all of the holes with a Hilti Hammer Drill,and trying not to split the marble, it's hard going, we are expected to work on really old installations, over here, to re-wire them takes ages.
I had an install, a couple of weeks ago, where I split the whole board into five pieces, marble for you,thank God the power was turned off.

Re: Down Under Wiring #134075
11/10/02 06:02 AM
11/10/02 06:02 AM
P
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
Marble??!! Don't think I've ever come across that before!

We do still have a surprising number of old 1920/1930s boards in use, polished wood cabinets, often with a glass front and the standard rewireable porcelain fuse carriers.

Re: Down Under Wiring #134076
11/10/02 06:57 AM
11/10/02 06:57 AM
B
Belgian  Offline
Member
Joined: Oct 2002
Posts: 177
antwerp
Who uses a hilti to drill in marble? Why don't you use a special drill bit for marble without hammer function on?

Re: Down Under Wiring #134077
11/10/02 10:43 AM
11/10/02 10:43 AM
H
Hutch  Offline
Member
Joined: May 2002
Posts: 381
South Oxfordshire, UK
I’m feeling on firmer ground here. Marble, essentially a highly cooked and recrystallized limestone, is a relatively soft rock hence it is cut into slabs and polished for the back of old switch boards amongst other things. [Linked Image] My advice would be to drill it quite slowly using a carbide glass or tile bit which has the shape of a spade (as in cards not garden). Failing this, or as you penetrated deeper, I would switch over to a standard carbide tipped masonry bit with no hammer and still drilling slowly.

Lubrication would help but I see two problems here: a) the board is probably being drilled in situ and is therefore vertical and b) water, the best lubricant, does not mix well with a wired up switch board. Using light lubricating oil would be a good compromise. If it was possible to drill the marble off the wall when flat, I would build a modelling clay dam around the drill site, fill it with water and go at it slowly with the bits mentioned above.

Re: Down Under Wiring #134078
11/11/02 12:44 AM
11/11/02 12:44 AM
Trumpy  Offline
OP
Member
Joined: Jul 2002
Posts: 8,231
SI,New Zealand
Thanks guys, for the advice on the drilling of marble switchboards, we normally don't do too much with these types of boards, we normally advise that they be replaced as we have a saying over here, with respect to old marble or Zealite switch-boards: If theres marble on the board, then there's rubber in the roof.
Never been proved wrong, yet.
Basically, the need for MCB protection, makes a board replacement worthwhile. [Linked Image]

Re: Down Under Wiring #134079
11/12/02 01:22 AM
11/12/02 01:22 AM
Trumpy  Offline
OP
Member
Joined: Jul 2002
Posts: 8,231
SI,New Zealand
Ever wanted to find out about our Regs, ECP's(Electrical Codes of Practice),
check out this website: www.ess.govt.nz
It should show you anything that you want to know, about our really warped Regs system.
[Linked Image]

Page 1 of 2 1 2

Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
The_Lightman
The_Lightman
Orlando, Fl, USA
Posts: 49
Joined: August 2001
Show All Member Profiles 
Top Posters(30 Days)
Admin 20
sparky 16
Potseal 15
Popular Topics(Views)
243,573 Are you busy
180,372 Re: Forum
170,846 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.026s Queries: 15 (0.005s) Memory: 1.0255 MB (Peak: 1.1991 MB) Zlib enabled. Server Time: 2018-01-21 06:49:26 UTC