Earth Rod Requirement?
Earth Rod Requirement?
(OP)
We are supplying 4 metal container huts from a 3 phase board with no neutral. To provide 230V consumer unit supplies we are using a 400V to 230V TX, with the neutral linked to earth on the secondary. The supply to the TX (which is located in one of the containers) is 2 phase 400V TNS. We have a main earth bar in the supply container connected to the supply cable SWA, with MEBC running to all containers. All 230V sockets will have 30mA RCD protection.
Is there a requirement for installing earth rod/s in this application? All our other LV step down TX’s have neutrals linked to earth, but this installation is slightly different.
Thanks in advance,
Alan
Is there a requirement for installing earth rod/s in this application? All our other LV step down TX’s have neutrals linked to earth, but this installation is slightly different.
Thanks in advance,
Alan






RE: Earth Rod Requirement?
RE: Earth Rod Requirement?
The 'containers' are installed outdoors in a fenced off area, weather or not this makes any difference?
RE: Earth Rod Requirement?
RE: Earth Rod Requirement?
RE: Earth Rod Requirement?
For your RCD protection to be effective, there has to be a path through 'earth' rather than through the earth conductor. If your neutral is connected to the main earth bar in the container, then you must provide a connection to 'earth' from this point.
RE: Earth Rod Requirement?
Visit
http://www.web-mantra.com/thrilecinternational/products...
Etc. for more info
Deep earth grounding will usually provide a low grounding resistance, e.g. 40 feet plus.
RE: Earth Rod Requirement?
RE: Earth Rod Requirement?
If this is the case then additional earthing via ground rods etc is not required.
You should check that the RCD units are operating satisfactorily.