Mainswitch

[bobbypot]

What size main switch should be used behind a mains board supplying.32a cooker,32a ring main, 45a shower, 5a lighting, 20a pump obviously they will never all be running at same time.



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[Steve]

100 amp. any advances?

why do you ask?

And it should be beside it, not behind it. you wouldnt be able to access it.

 

[markthebuilder]

tecKies Experts and though not in the same class Proper Sparkys may tell you different but A 100A main switch will allow you to switch off up to 100A safely it doesn't mater if less is going through you will be safe. If you are a domestic customer the main fuse is probably only 60a (don't worry it will handel a lot more load on the odd occasions you need it. ) so 100 may be OTT but on christmas day When cooker is full bore, Heating is wound up the washing machine is on Getting your best shirt back to white, and you pop the kettle on whilst you go for a shower you will be well covered,

Why 20A for the pump by the way

note I;m a Builder not a Sparky

 

[RF Lighting]

Depends on how big the supply you are connecting to it is.

 

[Steve]

Depends on how big the supply you are connecting to it is.

Do domestic single phase supplies exist over 100 amps? I thought not, which is why I suggested a 100 amp switch.

 

[markthebuilder]

Im not haveing a dig .
i dont know im a builder But my reply took me about !/" Hr to Type and spel check so didnt see tours.

 

[RF Lighting]

Depends on how big the supply you are connecting to it is.

Do domestic single phase supplies exist over 100 amps? I thought not, which is why I suggested a 100 amp switch.

OP never stated it is a domestic setup.

Yes most of the time 100A will be fine, but not every single time.

 

[securespark]

That would be 100A, no question about it.