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

Industrial Earthing arrangement

Discuss Earthing arrangement in the Industrial Electrician Talk area at ElectriciansForums.net

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

Is anyone able to clarify with me how i can work out what earthing arrangement i have on site.

Supply comes into one of our motor switch rooms from an 11kv to LV transformer located directly outside. I can see 4 big copper bars (3phases and neutral) coming in which will then feed off to the Motor panels. There is an earth bar at the other side of the room which has various large earth cables connected.

There is one earth cable larger than the rest which i assume is the earthing supply cable and then the other slightly smaller ones i have traced which go to some of the bigger motors we have (100kw+).

Speaking to a few of the other guys (not electrical) and they said there are various earth spikes all over the site (may or may not be lightening protection). So would it be possible for our entire plant to be a TT or is it more likely that earth is derived from the neutral point of the hv transformer. Or is there an easy way to work this out

Thanks
 
Electrical2Go - Online Electrical Supplier
This official sponsor may provide discounts for members

ipf

-
Mentor
Arms
Esteemed
You must be logged in to see the message.
 

Megawatt

-
Arms
You must be logged in to see the message.
 
Wetroom Store - Network Wetroom Suppliers
This official sponsor may provide discounts for members

Reply to Earthing arrangement in the Industrial Electrician Talk area at ElectriciansForums.net

Aico Carbon Monoxide Detectors
This official sponsor may provide discounts for members
Top Bottom