Installation certificate, but can't shut down.

[Duncan Bennett]

Ho w do you complete an electrical installation circuit when you cant shut down the plant that runs on the same board?

 

[Pete999]

Ho w do you complete an electrical installation circuit when you cant shut down the plant that runs on the same board?

Where is the install being done?

 

[Duncan Bennett]

It's in a food producing factory, and it's almost impossible to shut down a whole board to do ZE and lpf readings.

 

[Pete999]

Ho w do you complete an electrical installation circuit when you cant shut down the plant that runs on the same board?

Do the install as far as you can

 

[Duncan Bennett]

Cheers, Pete That's how I'm doing it at the moment, but there are times when all I can give are, R1+R2, Zs and insulation info. It's just a bit frustrating :-(

 

[Pete999]

Cheers, Pete That's how I'm doing it at the moment, but there are times when all I can give are, R1+R2, Zs and insulation info. It's just a bit frustrating :-(

Just do the dead tests, tell your client you can't issue an installation cert until he gives you a down time slot, unless one of his maint guys is told to work live he can't use the new install, see how long that takes, invoice him for the install only and say you will certify when he agrees a down time slot, difficult I know but I used to do it with high end Civil Servants, I know I was paid regardless but it did work when they couldn't do the things they wanted to do to keep the country running, or so they thought, nothing worse than a self important Dennison from the corridors of power,

 

[The Ghost]

Did you not agree limitations due to not being able to shut down? and thus mark it as a lim?

 

[westward10]

Which tests can't you do.

 

[Deleted member 9648]

LIMITATIONS!
As long as you can justify limitations on your EIC then state that shutting down for correct testing of Ze etc is not viable. If there is an up to date EICR available then you could use those readings and give the above reason for doing so.
It would depend on scope of the work you are carrying out as well, a major job would not justify limitations, but a new radial circuit from a sub-DB for example hardly justifies major disruption and cost implications when perhaps a Zdb reading with no shutdown is perfectly adequate.

 

[Octopus]

Given you have the R1 + R2 and the Zs couldn't you state the calculated Ze?

 

[The Ghost]

Anyway what is it you installed ?? You should have done dead tests then before commissioning??

 

[Duncan Bennett]

I was running a new circuit from a board. Simple double socket. I tested insulation, R1+R2 before hooking up, and Loop impedance from the socket once it was live. But I couldn't check Ze or lpf as the board was live and the other circuits were in use. I did inform the client and marked the lim's on the certificate. Thanks for all your help

 

[Andy78]

Commercial premises that have had a forward thinking electrician in during a shut down usually have the useful addition of Ze and Ipf written on the incoming chamber/panel board in black marker.

Always nice to find that.

 

[Sintra]

Substitute Ze for Zdb and note on the cert. As for Ipf why could you not do that?

 

[westward10]

Did you not agree limitations due to not being able to shut down? and thus mark it as a lim?

Where can you put on an EIC Limitations.