Opinions please.

[Flanders]

Cant you use a type d mcb

 

[Leesparkykent]

Cant you use a type d mcb

Wont make a difference where discrimination is concerned.

 

[Leesparkykent]

http://edmundson-electrical.voltilink.co.uk/articles/guide-discrimination this is a good read.

 

[Flanders]

Thanks for that lee think i been miss guided in the past was thinking about discrimination for overload not short circuit .

 

[Dave OCD]

Cant you use a type d mcb

It did occur to me ,might be ok on overcurrent 'tripping' on one of the final circuits but in the event of a l-n short it would most likely go at the same time ?

 

[Dave OCD]

Beaten to it again !:biggrin:

 

[Amp David]

What brand of RCBOs you using in the new CU.? Always found DP versions tricky to get

 

[Leesparkykent]

What brand of RCBOs you using in the new CU.? Always found DP versions tricky to get

SBS do single pole switched neutral RCBOs.

 

[Deleted member 9648]

Is it an actually requirement that the door is hinged to shut itself? Just think if you had to install a 3phase board within a domestic property if this was the case.

No,it's not a specific requirement....but for me that is not complying with the intention of the regulation which is a fire resistant enclosure over all 'combustible' components as far as is practical. That is why all Am 3 designed enclosures I've seen have a top hinged metal lid. I wouldn't fit that wylex unit. I take your point about the 3 phase board,but that would easily be overcome by fitting 3 separate single phase DB's if you took the view that a side hinged door was not compliant. I would take that view as the door left open would negate any fire resistance of exposed 'combustible' components.

 

[Leesparkykent]

The hinged lid is a good idea but I've already seen a board installed where the wall was out and the lid ever so slightly stayed open. Imo a catch or similar is better. Edit: What switch fuse would you install? As there doesn't appear to be many on the market atm that meet the requirements.