School testing.

[graham123]

100 circuits about 3 days work in a empty school, depending on the condition of it

 

[UNG]

100 circuits about 3 days work in a empty school, depending on the condition of it

100 circuits - 72 hours what %age of accessories are you checking

 

[davesparks]

You test the multicore and the plugs and sockets each end of it for all the normal dead tests - unplugged from any dimming - and do not even think about doing any live tests as even if you don't manage to destroy something then the results will be meaningless anyway.

I hope we're talking about installed rather than temporary installs so you do the usual tests you do for any installed circuit.

Treat an install dimmer as being another DB, only difference is doing the Zs test using the alternative method where you join L to E at the far end of the circuit and test between the incoming side of the dimmer and the outgoing.

 

[graham123]

4 ccts per hour over an 8-9 hour day onsite. If school was empty. 100%visual to every accessory 20%removal of accessories on circuit. And the use of common sense

 

[UNG]

4 ccts per hour over an 8-9 hour day onsite. If school was empty. 100%visual to every accessory 20%removal of accessories on circuit. And the use of common sense

So not a 100% I & T then

 

[graham123]

So you would remove every accessory on a large ring main?

 

[martinh287]

100% in a domestic environment is a must but 100% in most commercial building's would be difficult to achieve to a acceptable price and disruption to the client. Previous test results and sufficient sampling of circuits should give anyone a indication to the extant of the test required

 

[graham123]

I agree with that 100%

 

[Richard Burns]

100% testing is acceptable but 100% internal inspection of equipment is not recommended as it can cause more damage and problems with the disturbance , especially if it is inspected regularly.
Sample inspections is the way to go, the extent of testing may be staged over time to reduce disruption.

 

[UNG]

So you would remove every accessory on a large ring main?

No, there are a few on here that do advocate 100% I & T I'm not one of them

100% in a domestic environment is a must but 100% in most commercial building's would be difficult to achieve to a acceptable price and disruption to the client. Previous test results and sufficient sampling of circuits should give anyone a indication to the extant of the test required

Why differentiate surely if it is good enough for one type of installation it is good enough for all.

 

[jay sean]

I done a empty school last holidays, can do about 40 ccts a day--we do about 20% visual of accessories - if you find lots of faults you would increase the sampling.

 

[graham123]

I can normally do between 30-40 a day in in empty school