Do you have your system on its own dedicated ring on the house electrical supply?

Thanks. I’ll give it a go. 

Happy Listener posted:

Also worth pointing out that you should test these 'breakers' (as HH defines) at least every 12m i.e. press the test button and then reset them - ideally more frequently.

MCBs don't have a test button - are you thinking of RCDs? Naim suggest that you avoid the use of RCDs where local regulations permit.

You are right! Mine just has an on/off switch. So there is nothing for me to test. I can rest easy that for fifteen years I haven’t done it. Think of the time saving. 

Hungryhalibut posted:

With all this talk of type B, type C, RCD and MCB I convinced myself I probably had the wrong thing. I finally plucked up courage to take a look earlier, and what do you know, it’s a type C. Hurrah. In my research I’ve also discovered that they types refer to how easily they blow, and that the mysterious MCB is simply the acronym for miniature circuit breaker. Now I can advise others to use a Type C MCB, rather than just a ‘breaker’. 

I started going on about using Type C MCBs on these threads after Steve Hopkins recommended it to me last year. Since putting them on my dedicated mains, it hasn't tripped once, whereas on my old supply, switching the power amp would trip the Type B  MCB more often than not.

Having just got the system running on the new mains supply am I right in thinking the new 10mm supply cable will burn in and sound may improve slightly?

Have you got problems ?

james n posted:

Have you got problems ?

No not at all, was just thinking about it.

Popeye - does it sound any different?

S3 posted:

Popeye - does it sound any different?

Marginally better, as if the noise floor is slightly less but it's not much.

Oh dear. That’s a shame. Maybe it will get better. Others may have found the same.

Well the Electrician didn't think i was totally bonkers. Once i showed him the schematic i'd drawn up and explained why i wanted a double socket connected to a dedicate CU by a cable more usually found feeding a power shower or cooker, just to power some hi-fi kit he understood.... Apart from the non RCD request (wants to re-check the regs due to liability) his only other concern was the depth of the back box needed to form the 10mm ends into the socket - he's going to quote for 6mm run and a 10mm and let me decide. 6mm should be more than adequate given that it'll be a maximum of 3 pieces of equipment likely to run off this new socket but i'll see what he comes back with and then decide. 

James

James, go for 10mm, the cost difference should be minimal and the result will be better. I’ve had both (now 6x10mm) and the 10 was worth the extra.

Go for the 10mm, even if he pushes you towards the 6. 

Hungryhalibut posted:

Go for the 10mm, even if he pushes you towards the 6. 

With 10mm do you just have a single socket (or double socket anyway) I’m trying to imagine getting two 10mm cables into the terminals of a 13amp wall plug and seems an impossible ask...

You wouldn't get two 10mm tails into the back of a socket. You will need to use another Henley block and spur off the 10mm just before the initial socket for subsequent sockets.

The deepest back box you can get is 47mm, and it's easier to work with 6mm, but an electrician will be used to working with 10mm, or even 16mm, for cookers and showers, so it shouldn't really be a problem. If you want to instal more than one double socket, it gets more difficult. It's not impossible to get two pairs of 10mm T&E into a socket in order to do this, but it is really quite awkward. My electrician suggested, as an alternative, to split the 10mm into two at a Henley block just before the sockets, as Popeye mentions above, and this has worked well for me. 

That’s exactly what I’m having done. 10mm SY cable to a Henly box and then three double MK unswitched sockets from there. I’m told it is exactly the same as having 10mm cable straight to the socket.

The advantage of the Henly Block is that it is designed to take heavier cables, and they can be inserted and tightened with ease, whereas a socket is really only intended for use with 2.5mm cables. The block does mean a break in the continuous copper cable compared to a direct connection to one double socket, but if you need more than one double, perhaps it's better to have the break here than at the first of two sockets. 

S3 posted:

That’s exactly what I’m having done. 10mm SY cable to a Henly box and then three double MK unswitched sockets from there. I’m told it is exactly the same as having 10mm cable straight to the socket.

For those who have not seen all the thread, it has an earth of a similar diameter. Other tips about having a really good earth apply. It may be worth checking the earth on the existing system before the work starts. 

Phil

Very interesting as I am in the process of installing a dedicated supply.As of now the consumer unit is in but I have yet to choose a cable or breaker.

A few pictures from previous installation to where I am at at present.

https://imgur.com/eyFtvmT

https://imgur.com/6c1olhu

https://imgur.com/DSH1bwu

Matty

Yet again the picture issue arises.I was hoping the pictures would be embedded in the thread not just the links.Not sure what I have done.

Matty

ALBA1320,

Thank you.

Matty

Alba1320 posted:

Matty.s posted:

Yet again the picture issue arises.I was hoping the pictures would be embedded in the thread not just the links.Not sure what I have done.

Matty

Right click on the image, select 'copy image location'.

Click the mountain (insert/edit image) icon, paste the image location info. into 'source', click OK.

 

Maybe because I'm using my iPhone but I have no mountain option.I have done this successfully before but i can't remember what I done.Help was also needed then.

Thanks

Matty.s posted:

Maybe because I'm using my iPhone but I have no mountain option.I have done this successfully before but i can't remember what I done.Help was also needed then.

It's only visible in landscape view, turn your phone sideways and it will magically appear!

ChrisSU posted:

Matty.s posted:

Maybe because I'm using my iPhone but I have no mountain option.I have done this successfully before but i can't remember what I done.Help was also needed then.

It's only visible in landscape view, turn your phone sideways and it will magically appear!

ChrisSU,

thanks for the suggestion but the option still doesn't show on my iphone (5se).I can see the options on my iPad so I must of used that when I posted pictures in the system pics thread.Next time I will use the iPad and hopefully that will work.

Matty