My consumer unit as I want it

[Cashman]

Hi Guys,

I have designed the attached unit to replace the existing ones that are separate (1 =House/1 Outdoor shed and lighting)
I think it looks better all in one with 2 main Switches. Is this OK?
Appreciate our comments ,Cheers.

 

[DPG]

Why 2 main switches?
You don't get 63mA and 80mA RCDs. I think you are confused with the maximum operating current.
Outside lighting on a 16A MCB - maybe a bit OTT?
I would go for a full RCBO unit with an SPD.

 

[Dave OCD]

I think you'd be better off with a single 100a main switch then use individual RCBOs for all circuits. This would provide better discrimination in the event of an earth fault on any final circuit.

 

[Dave OCD]

Beaten to it by Daz, fastest finger first. ?

 

[Cashman]

Why 2 main switches?
You don't get 63mA and 80mA RCDs. I think you are confused with the maximum operating current.
Outside lighting on a 16A MCB - maybe a bit OTT?
I would go for a full RCBO unit with an SPD.

The 16A MCB is wrong . It is 6 A, sorry. 2 Main switches because I want Shed and outdoor lighting be separate)

 

[Dave OCD]

You'll achieve that with RCBOs.

 

[Cashman]

The 16A MCB is wrong . It is 6 A, sorry. 2 Main switches because I want Shed and outdoor lighting be separate).

I have made another mistake in writing. These are 80A,63 A and 40A RCDs

 

[Cashman]

I think you'd be better off with a single 100a main switch then use individual RCBOs for all circuits. This would provide better discrimination in the event of an earth fault on any final circuit.

Yes, RCBOs are better, I will have more space as well.

 

[DPG]

Yes, RCBOs are better, I will have more space as well.

Makes sense to include an SPD as well.

 

[Cashman]

Why 2 main switches?
You don't get 63mA and 80mA RCDs. I think you are confused with the maximum operating current.
Outside lighting on a 16A MCB - maybe a bit OTT?
I would go for a full RCBO unit with an SPD.

I have uploaded the revised image. I will have a small consumer unit in the shed being fed from here. I am not sure if it is wise to feed the shed CU from a a RCBO in this main CU!?