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Nice Interpretation Of Confirmed Or D.i.y. Dt ('double' Tech)


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I pushed back to them on the grounds that as long as it was compliant on what grounds were try saying no. Discussions continuing . . .

And therein lies one of the problems the inspectorates have brought on.

We've covered this before.

They want people to do things their way and only their way. And people wonder why this industry is dying.

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And therein lies one of the problems the inspectorates have brought on.

We've covered this before.

They want people to do things their way and only their way. And people wonder why this industry is dying.

They didn't see my point of view at all which was if it is compliant then it isn't for the certification body to dictate how that compliance is met. That said not having the badge is no barrier whatsoever to what we want to do. In many ways it enhances it not having it but in the spirit of doing things properly . . .

www.securitywarehouse.co.uk/catalog/

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Well, I did this job today swapping out for an LCD based panel.

 

The two detectors in the initial picture...

 

Wait for it, wired in

 

PARALLEL?!!??!!

 

Or as the job sheet which I found (but sadly haven't got) stuffed on top of the cabinet said 'wire garage in parell'

 

Twisted wires to connect speaker in trunking - no insulation

 

Taped up twisted wire joints in loft

 

Somehow ran out of wires for SAB so joined Strobe to Siren!! (Lets not forget even old panel was PD 2010)

 

Front door contact was Grade 1 without tamper.

 

All from an NSI gold sold as Grade 2X. (Not a cash job or homer). Class and a half.

So, I've decided to take my work back underground.... to stop it falling into the wrong hands

 

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Well, I did this job today swapping out for an LCD based panel.

 

The two detectors in the initial picture...

 

Wait for it, wired in

 

PARALLEL?!!??!!

 

Or as the job sheet which I found (but sadly haven't got) stuffed on top of the cabinet said 'wire garage in parell'

Beam Paired

 

Twisted wires to connect speaker in trunking - no insulation

Double insulated

 

Taped up twisted wire joints in loft

Sort of double insulated

 

Somehow ran out of wires for SAB so joined Strobe to Siren!! (Lets not forget even old panel was PD 2010)

Economy wiring

Front door contact was Grade 1 without tamper.

System is G1x

 

All from an NSI gold sold as Grade 2X. (Not a cash job or homer). Class and a half.

1 Point for the door contact. Must do better.

Customers!

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Well, I did this job today swapping out for an LCD based panel.

The two detectors in the initial picture...

Wait for it, wired in

PARALLEL?!!??!!

Or as the job sheet which I found (but sadly haven't got) stuffed on top of the cabinet said 'wire garage in parell'

Twisted wires to connect speaker in trunking - no insulation

Taped up twisted wire joints in loft

Somehow ran out of wires for SAB so joined Strobe to Siren!! (Lets not forget even old panel was PD 2010)

Front door contact was Grade 1 without tamper.

All from an NSI gold sold as Grade 2X. (Not a cash job or homer). Class and a half.

That is real old school, not seen 2 detectors in parallel deliberately installed for many years, but was used early days of motion sensors. no elephant catchers or quads back then, MWD and Ultrasonic 's were king.

Principle was if one detector was tripped by a draft, the other stopped the activation, but a large target would trip both at same time.

Could also be used for animals, as long as one did not cover stairs as example, better than stuffing large slug on the zone ;).

Edited by arfur mo

If you think education is difficult, try being stupid!!!!

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  • 7 months later...

I was recently told on a course i attended, that you can have two detectors close together and it comply as long as the paths dont overlap.

 

so some kind of narrow curtain beam pir and a normal pir would give you a no overlap but they wouldnt overlap?

 

whats your take on this?

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