I'm gonna be cleaner!!!!!!

Posted by: blythe on 07 June 2005

At present, I have a dedicated mains supply to my Naim. One 32A circuit breaker (but please don't ask me what the supply cable mm2 is)

However, I am about to move and had a meeting with the electrician who is going to do all the alterations I want.
When it came to my hi fi, I simply said, "I love my music, have a hi-end Hi-Fi and want 2 spurs, 10mm2 fed from tails off the meter, before the main board, terminating in 2xMK un-switched sockets".

He said "OK, fine, good clean mains, what else do you want?"

I was actually pretty surprised that he didn't even flinch or query it!

I feel impressed and satisfied that I "might" have the right electrician on the job!

Refreshing eh?
Posted on: 07 June 2005 by Wolf
Good for you, nice to have a competent workman. I mentioned this subject to my cousin who builds custom houses for a living and he was very interested, He'd put in extra sockets for electronics but hadn't figured on them being for clean signals. Wish I could put them in in my apartment, but can't.
Posted on: 08 June 2005 by Nime
And I though this was just another typo and you were bragging about becoming a cleaning assistant.

Why is it that you always put everything else through a filter to clean it? But when it comes to mains juice you just push it through a bigger hosepipe? This does not make any sense.
Why not a multiple-fine-strand cable to stop all the nasties getting through without reducing the cross-sectional area? Would it clog up and need a plumber in after a while? Smile

Nime
Posted on: 08 June 2005 by Lomo
Why do they put all of these "spur of the moment" threads into the asylum?
So they can disappear disgracefully???
Posted on: 08 June 2005 by niceguy235uk
2 things..

Firstly, i hope you have used a 'registered' electrician. If he is he will issue you with a certificate. If he isnt its illegal.

Secondly, i take it he is going to supply a seperate board to feed your sockets? It would be very dangerous if they were just run straight from the main meter tails and no protection.

Just a thought....
Posted on: 08 June 2005 by Adam Meredith
quote:
Originally posted by Lomo:
Why do they put all of these "spur of the moment" threads into the asylum?
So they can disappear disgracefully???


Forum Rules

“This is the Naim Audio forum - we cannot sanction discussion of modifications to internal components of equipment. This applies especially to the case fuses fitted within our equipment. There is a blanket and strict ban on such topics – it includes euphemistic phrases that ultimately reference such practices and attempt to circumvent the restriction.

An extension of this is discussion of alterations to the mains wiring, sockets, plugs, fuses and mains leads. Some exchanges about this can take place in the Padded Cell but will be subject to moderation on a precautionary basis. Excessive/obsessive discussion will also be closed or removed.”
Posted on: 09 June 2005 by John Sheridan
quote:
Originally posted by Adam Meredith:
An extension of this is discussion of alterations to the mains wiring

Adam does this mean Nanny Naim is now going to start censoring her own product manuals? FFS!
Posted on: 09 June 2005 by Deane F
quote:
Originally posted by John Sheridan:
quote:
Originally posted by Adam Meredith:
An extension of this is discussion of alterations to the mains wiring

Adam does this mean Nanny Naim is now going to start censoring her own product manuals? FFS!


"Advice on the installation of a separate mains circuit should be sought from a qualified electrician."

What's to edit?
Posted on: 09 June 2005 by Adam Meredith
quote:
Originally posted by HT-Naimee:
P.S.: Sorry, but as Naim is reading along, maybe they are willing to just give a short opinion on things. I'd just like to know whether Naim actually recommends a professionally installed dedicated mains line for their equipment?


From your Manual:
3.3 mains supply
Where fused plugs are used 13 amp fuses should be fitted.
Fuses of a lower rating will fail after a period of use.

A hi-fi system usually shares a mains circuit with other household equipment some of which can cause distortion of the mains waveform. In some Naim equipment such distortion can lead to a mechanical hum from the transformers. The hum is not transmitted through the speakers and has no effect on the performance of the system but is purely local to the transformer itself.

A separate fused mains circuit (like that reserved for electric cookers) may reduce transformer hum. Such a circuit (ideally with a 30 or 45 Amp rating) will also have a lower impedance, supply cleaner power, and consequently improve system performance.

Do not wire voltage dependent resistors or noise suppressors into mains plugs. They degrade the mains supply and the sound.
Posted on: 09 June 2005 by blythe
quote:
Originally posted by niceguy235uk:
2 things..

Firstly, i hope you have used a 'registered' electrician. If he is he will issue you with a certificate. If he isnt its illegal.

Secondly, i take it he is going to supply a seperate board to feed your sockets? It would be very dangerous if they were just run straight from the main meter tails and no protection.

Just a thought....

Absolutely 100% legal, he will issue the certifcate which is now the law!

Each 10mm2 spur will be from a 32 amp breaker -and I have the original Naim fuses in the plugs etc.

I won't comprimise saftery for anyone - particularly myself - I value my life !!!! Smile
Posted on: 10 June 2005 by paul_g
quote:
Originally posted by HT-Naimee:
1. Excuse me, this must sound daft, but when you talk about 10mm² spur, you do mean all three cables inside together mount up to a 10mm² cable, right? Not phase, earth and negative each 10mm²?

2. And did you put down one spur (=cable?) for each piece of equipment or would it be completely sufficient to use one spur just for Naim?

3. Which brings me back to my question from above:
And once a dedicated line is done, would it be better to leave the "cheap" stuff (VCR, DVDP, Satellite receivers) on the original main line to keep the distortion out of my Naim-line ?


1. Yes - 10mm2 refers to the total diameter of the cable.

2. Opinions differ .....

3. Yes. This is the whole point of the exercise & the term "dedicated supply" means exactly that - the spur(s) should be fed from a separate consumer unit with appropriate protection devices fitted (fuses, MCBs, RCDs, RCBOs depending on the application - you should seek professional advice on this). This draws power directly from the incoming supply. The existing CU continues to serve the rest of your electrical circuits (ring main if you are in the UK).

Paul
Posted on: 10 June 2005 by niceguy235uk
Totally incorrect.

The 10mm2 is not the diamater of the cables together.

10mm2 is actually the cross sectional area of each conductor ie 10mm2 phase and 10mm2 neutral.

Just think about it if the cables were 10mm diameter!!!!!!!!!!!!!!!
Posted on: 10 June 2005 by Berlin Fritz
Of course in the not too distant future when you may well be running 100'sMB's of TV/Computer/Etc data through your mains cables at the same time, you may get a crackle or two to-boot, innit.


Fritz Von Don't be so silly Fritz Roll Eyes
Posted on: 11 June 2005 by Nime
How apt Fritz!

"Clickonline" only an hour a ago had a piece on the interference caused by using the mains cables for data transfer. It causes all sorts of problems with short wave radio communication. (allegedly) Which is denied by the mains plugs for data industry.

My computer certainly inteferes with the TV on terrestrial programmes but not on digital satellite. Presumably this is simply a matter of signal strength.