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New install for social alarm system PSU

I'm going to let the photo speak for it's self. The RCBO is powering a PSU with battery back up, which is powering a social housing alarm system. All the equipment is mounted in a steel cabinet on the outside wall of a bungalow. The supply is a TNCS.

All comments will be gratefully received.

Thanks

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0 AJJewsbury over 2 years ago

I can't make out the residual rating of the incomer RCD - if it were an S-type (100mA or 300mA) it might not be unreasonable (if still probably more expensive a setup than it need be for TN). A 30mA upstream of an SPD would be a bit silly though.

- Andy.
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0 mapj1 over 2 years ago in reply to AJJewsbury

it is one of these RTA630302

looking that up it appears to be a 30mA type A for £20 + VAT ;-)

https://www.ukelectricalsupplies.com/fusebox-63a-30ma-type-a-double-pole-rcd.htm

The main switch would be less than a third of that

https://www.ukelectricalsupplies.com/fusebox-100a-2-pole-isolator-main-switch.htm

Mike
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0 mapj1 over 2 years ago in reply to AJJewsbury

it is one of these RTA630302

looking that up it appears to be a 30mA type A for £20 + VAT ;-)

https://www.ukelectricalsupplies.com/fusebox-63a-30ma-type-a-double-pole-rcd.htm

The main switch would be less than a third of that

https://www.ukelectricalsupplies.com/fusebox-100a-2-pole-isolator-main-switch.htm

Mike
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New install for social alarm system PSU

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