MK Garage boxes

[Cremeegg]

Why is it that MK sell their garage kit (2 way consumer units with RCD) with a 6A MCB for presumably lighting and 16A MCB for what?

My OSG tells me that I should run any power circuits as a) a ring in 2.5mm off a 30/32A MCB or b) a radial in 4mm off a 30/32A MCB or c) a radial in 2.5mm off a 20A MCB.

So where on earth does a 16A fit in - or have I just had a bad day and aren't seeing something very obvious?

 

[breezer]

bad day, iguess.

you dont have to protect a ring with a 32a mcb, you can use smaller, also it reduces the size of cable required to said outbuilding if only 22A will be aavilable

 

[davy_owen_88]

Why is it that MK sell their garage kit (2 way consumer units with RCD) with a 6A MCB for presumably lighting and 16A MCB for what?

My OSG tells me that I should run any power circuits as a) a ring in 2.5mm off a 30/32A MCB or b) a radial in 4mm off a 30/32A MCB or c) a radial in 2.5mm off a 20A MCB.

So where on earth does a 16A fit in - or have I just had a bad day and aren't seeing something very obvious?

The clue is in the title... On Site Guide. The 3 circuits you mention are standard circuits but there is no rule saying you can't protect a socket circuit with a 16A MCB.

 

[securespark]

Be that a ring or a radial.

I often come across rings (usually upstairs) that are fused to 20A.

 

[Cremeegg]

Thanks - I guess I shouldn't always go by the book

 

[davelx]

Thanks - I guess I shouldn't always go by the book

No, people should UNDERSTAND the theory behind the regs, not just quote and follow them parrot fashion.