Wylex NHS12SL

[Monkeh]

Our reason for the choice of unit was that we have a large marine fish tank & need to avoid the heaters & lamps being turned off in the event of a house bulb blowing.

Not having RCDs will do nothing to help, and your fish tank should not be on a lighting circuit.. You or your electrician is sorely mistaken on the function of these devices.

 

[galaxy74]

Our reason for the choice of unit was that we have a large marine fish tank & need to avoid the heaters & lamps being turned off in the event of a house bulb blowing.

Not having RCDs will do nothing to help, and your fish tank should not be on a lighting circuit.. You or your electrician is sorely mistaken on the function of these devices.

Me probably!
I'm beginning to wonder if he may have said RCD? I don't know. I'm so confused. I just wanted to get everything together for when he gets back. I do remember he said 15 was too big and we only needed 12, and the split was to have lights etc on one and tank etc on other. Tank is fed from plug socket (sorry of that's obvious to u guys - I don't know what other info u may need to know).

 

[ban-all-sheds]

We did have a conversation about changes in regulations, and the "new types" being overly sensitive.

I'm sorry - that's nonsense - RCDs are no more sensitive than they have always been, and MCBs less so than a while ago.

The electrician himself is undoubted, being one of my dad's oldest and closest friends before he passed away

Is he registered with a competent person scheme? (If not are you aware that you will be supposed to apply for Building Regulations approval in advance, describe what will be done to ensure that the work complies with them, and stump up a couple of £hundred?)

Is he qualified to the current version of the Wiring Regulations?

I'm not too concerned about whether it meets the latest "fad"

It's more than just a "fad".....

 

[ban-all-sheds]

I just wanted to get everything together for when he gets back.

I think you'd be best off waiting.

And be prepared to buy RCBOs (not RCDs) instead of MCBs for the non-RCD part of the CU you've bought.

 

[galaxy74]

What does MCB and RCBO stand for? And what's the difference? Except the price, which I can see on ebay - ouch!

 

[hammo2809]

simple answers is yes, the nhxb mcb's are the correct ones for your boaed. However if you want the board to installed to the current 17th edition regs you will need to fit some rcbo's in the board. Or exchange the board you have for the Wylex nhsr10sslhi, then fit the nhxb mcb to comply with the current regs.

 

[AndyPRK]

I would avoid MCB's or RCBO's with X in the part number to be on the safe side. They might fit, they may not.


These are the MCB's for that model. Only 16mins left !
NSB

http://www.ebay.co.uk/itm/WYLEX-MCBS-/140626645385?pt=UK_BOI_CircuitBreakers_RL&hash=item20be005189


http://www.ebay.co.uk/itm/WYLEX-NSB...I_CircuitBreakers_RL&var=&hash=item746c29b023



You may want a 2nd RCD (and some proper cable)

http://www.ebay.co.uk/itm/WYLEX-80A...UK_BOI_CircuitBreakers_RL&hash=item2315654cc2

http://www.ebay.co.uk/itm/Wylex-Rcd...UK_BOI_CircuitBreakers_RL&hash=item1c1fdc07f4


or

some RCBO's

that look like this :

http://www.ebay.co.uk/itm/wylex-nsb...UK_BOI_CircuitBreakers_RL&hash=item35b635c7a4

Say a B32 and a 6

 

[ban-all-sheds]

What does MCB and RCBO stand for?

Miniature Circuit Breaker and Residual Current Breaker with Overload.

And what's the difference?

The latter combines the function of an RCD and an MCB.

Except the price, which I can see on ebay - ouch!

Yes, they are expensive.

The best way though to avoid having multiple circuits on 1 RCD.

In reality unless you have unusual requirements or just want the best way, a board with 2 or 3 independent sections so you can have more than 1 RCD is usually fine.

The board you have bought is not that sort, and it's because your electrician recommended it that I asked how up to date he was.

Not been retired a few years, has he?

 

[ban-all-sheds]

You may want a 2nd RCD

Not for the CU she's bought.

 

[AndyPRK]

You can convert the 12SL, to dual RCD.

Juist need the RCD and cable.

Although with this users requirements, it doesn't sound like the way forward.

 

[Taylortwocities]

You can convert the 12SL, to dual RCD.

Juist need the RCD and cable.

Well you need more than thatt. The HNRS range do not have the capability for a second neutral busbar. And you'll need one of those, won't you?

I'm off to the pub now.
I hate it when customers buy their own stuff. It's a recipe for disaster..

 

[galaxy74]

[/quote]

I'm off to the pub now.
I hate it when customers buy their own stuff. It's a recipe for disaster..[/quote]

You got that right! I'm beginning to think I've bought the wrong thing. We didn't get into the specifics of a model. He said I need a 12 way split load wylex consumer unit. I think he was trying to keep it simple for me.
Think I'd best wait til he gets back. This is WAY more complicated than my brain will compute!

 

[AndyPRK]

Well you need more than thatt. The HNRS range do not have the capability for a second neutral busbar. And you'll need one of those, won't you?

The 12SL has two already.

 

[galaxy74]

Don't even know what a busbar is - let alone whether there's one or two neutrals.

 

[ban-all-sheds]

He said I need a 12 way split load wylex consumer unit. I think he was trying to keep it simple for me.

I still have a suspicion that he was in a pre-2008 mindset.

Think I'd best wait til he gets back.

I think so too.