DB installed connected & tested

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• May 23, 2018

• #61

spinlondon said:

Ideally, you should swap the RCBOs in the Lighting panel for MCBs, swap the 63A MCB for an RCBO and swap the upfront RCD for a main switch.
Then again, is it really worth it?

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The rcbo’s in the lighting panel are specified by the supplier.
Am I right in saying if I do what you say,a N/E fault will still remain,there will be no Rcd to eliminate it.
Also why are we been given rcbo’s that are not DP.

 

Dave OCD

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• May 23, 2018

• #62

In my experience a N/E fault on a circuit which is 'off' is far less likely to have an effect on other circuits when part of a TT system. I always assumed this was due to the much higher N/E resistance at the source of the installation compared to a TNCS or TNS earthing arrangement. I'm sure most of us have experienced the embarrassing [when customers are around] RCD operation when you accidentally short out neutral to earth when working on a circuit ? Well I'm sure that's never happened to me on a TT system.

 

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• May 24, 2018

• #63

Exactly,total agreement.

 

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• May 24, 2018

• #64

Sp rcbo’s are allowed in regulations.
This as been a good discussion,I shall be asking for DP rcbo’s from now on.

 

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• May 24, 2018

• #65

cliffed said:

Sp rcbo’s are allowed in regulations.
This as been a good discussion,I shall be asking for DP rcbo’s from now on.
View attachment 42410

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double pole RCBO's will more than likely be double module. Single pole switched neutral RCBO's can def be found in single module size.

 

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• May 24, 2018

• #66

Leesparkykent said:

double pole RCBO's will more than likely be double module. Single pole switched neutral RCBO's can def be found in single module size.

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The SBS fella does single module, compact height, DP RCBOs with no earth lead. The only ones I know of.

 

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• May 24, 2018

• #67

Andy78 said:

The SBS fella does single module, compact height, DP RCBOs with no earth lead. The only ones I know of.

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Are they def double pole though?

 

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• May 24, 2018

• #68

Like I said,never fitted DP rcb’os into a Db

 

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• May 24, 2018

• #69

Leesparkykent said:

Are they def double pole though?

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He reckons so.
SBS Trade Sales - Products - https://www.sbstradesales.co.uk/products/

 

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• May 28, 2018

• #70

telectrix said:

most boards have MS on the right. only one i've seen with it on the left is MK.

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And Crabtree.

 

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• May 28, 2018

• #71

Rpa07 said:

是

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Unfortunately for your example, Chinese is also written left to right, top to bottom, same as English! Also there's no direct translation of "yes" as you agree with something by repeating the verb.
A little bit of useful world knowledge

 

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• May 28, 2018

• #72

I feel like I need to say sorry! Definitely won’t do it in chinese -
I’m going to ask Google translate for my money back (even though It cost nowt!)

johnduffell said:

Unfortunately for your example, Chinese is also written left to right, top to bottom, same as English! Also there's no direct translation of "yes" as you agree with something by repeating the verb.
A little bit of useful world knowledge

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