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Surge protection devices without overcurrent protection

Zs

Hello all, greetings from a desk day.

I am just off the phone with our genius SPD lady at SPD.  I mentioned the latest Fusebox distribution board which does not have an overcurrent device for the SPD.  The device is a Fusebox SPD1MT2 type 2 direct to busbar surge protection device.   She tells me that it is not compliant in accordance with section 524.4.5 and am inclined to agree.

www.fusebox.shop/.../spd1mt2

So, I installed one a week or so ago.  Purchased in good faith, and guilty of assuming an overcurrent device would be there,   I was a touch surprised when I saw no MCB for the SPD.

Their website states product description states 'with No MCB required'. 

I'm reading now that overcurrent can (in italics) be built into the device but my conversation with SPD hinted at some industry 'naughtiness'.  

Any views? Where do we stand with that then, in terms of compliance as installers?

thank you, 

Zs

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  • Zs said:
    Any views? Where do we stand with that then, in terms of compliance as installers?

    I would seek written confirmation from the manufacturers that the device is compliant.

    As an aside, like other SPDs, this one has a red/green flag, but what use is that to anybody when it is hidden under an opaque cover?

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  • Zs said:
    Any views? Where do we stand with that then, in terms of compliance as installers?

    I would seek written confirmation from the manufacturers that the device is compliant.

    As an aside, like other SPDs, this one has a red/green flag, but what use is that to anybody when it is hidden under an opaque cover?

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