CK Tools :) The professionals choice when it comes to Electrical Tools
This official sponsor may provide discounts for members

Discuss Earth Continuity Testing in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

N

normanton

-
Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:  American Electrical Advice Forum

As part of my new job, we are required to test existing DC Power Racks for Telecoms. We are told to carry out a earth continuity test, then a IR test, then a ELI test.
I may be getting a little complacent the older I get, but surely Earth Continuity is slightly OTT?
I mean, we're proving an earth when carrying out a ELI test are we not?
I know parallel paths can affect readings etc, but nevertheless I feel its too much. I'd like to hear your thoughts please?
L
 
Electrical2Go - Online Electrical Supplier
This official sponsor may provide discounts for members
Aico 3000
Risteard

Risteard

-
Esteemed
Arms
Moreover dead continuity testing won't necessarily remove parallel paths.
 
B

Bobster

Of course it's necessary, and you've explained why in your own post.

It's just an R2 test an it takes a matter of min with a wander lead.
 
snowhead

snowhead

-
Mentor
Is this what the customer has specified?

I'm sure they will have lost expensive electronic equipment to people not following their procedures.
 
buzzlightyear

buzzlightyear

-
Esteemed
Arms
How the hell can you do ir test when their is telecom equipment or im missing some thing .
 
snowhead

snowhead

-
Mentor
Presumably the mains side only of the DC power supply racks.

It was 48volt lead acid batteries when I worked for the GPO, none of this electronic stuff.
 
davesparks

davesparks

-
Mentor
Esteemed
Arms
How the hell can you do ir test when their is telecom equipment or im missing some thing .
The same way we do it for any other power wiring, disconnect the loads or test L and N together (or +ve and - ve in this case) to earth.
The only real difference will be the lower test voltage as its 48Vdc so I'd guess testing at 100V.
 
buzzlightyear

buzzlightyear

-
Esteemed
Arms
The same way we do it for any other power wiring, disconnect the loads or test L and N together (or +ve and - ve in this case) to earth.
The only real difference will be the lower test voltage as its 48Vdc so I'd guess testing at 100V.
so what if you the op miss some thing ,ops fried .
 
davesparks

davesparks

-
Mentor
Esteemed
Arms
so what if you the op miss some thing ,ops fried .
Yes, but but telecoms gear is likely to be able to handle it and it's going to be harder to miss something in telecoms racks where all of the equipment is one place.
Plus you'd hope there's some kind of plan, permit to work system etc in place to make sure that kin dof accident doesn't happen.
 
CK Tools :) The professionals choice when it comes to Electrical Tools
This official sponsor may provide discounts for members

Reply to Earth Continuity Testing in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

SuperlecDirect - ElectriciansForums.net Electrical Suppliers
This official sponsor may provide discounts for members
Top Bottom