Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 18 replies
  • Subscribers 32 subscribers
  • Views 7490 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Wiring a metal container

cydodimead
I have a job where the client wants some power and lighting in 2 containers in the yard of their unit. Conveniently there happen to be a couple of 16A single phase commando sockets (protected by RCBO's 16A 30mA) on the exterior wall of the unit a couple of metres from where the containers are located. Would I be right to treated the container as a Caravan? Supply to unit is TN-C-S (PME) so I don't want to export the PME earthing to the containers. I'm thinking the following to meet requirements.


1. Swap RCBO's for MCB's

2. Put 2 pole 30mA RCD in line (perfect bit of trunking on inside of building where I can put an enclosure with the RCD)

3. Small DB inside Container with MCB for twin 13A socket, and 2nd MCB for lights. All protected by double pole RCD. Earth from 16A socket on building not connected to container DB.

4. Earth stake from container DB through tarmac ground soil. Could I link bonding from one container to the other?


Having never wired a caravan pitch, caravan or container I just wanted to be sure I have read the regs correctly?
Parents
  • 0
    UKPN:

    Quite correctly, you choose not to use the PME supply, The ESQCR regulations make it clear that this kind of structure, with a steel covering needs an independent earth. The DNOs requirement is 2 meters separation from any metalwork connected to the PME network, which I am confident you can establish. 

    Regards, UKPN ?Zap


     


    The BS 7671 requirements for simultaneous contact between earthing systems is 2.5 m (arm's reach).


    As I said earlier, the separation of earth electrodes to buried metalwork underground is a separate requirement.


Reply
  • 0
    UKPN:

    Quite correctly, you choose not to use the PME supply, The ESQCR regulations make it clear that this kind of structure, with a steel covering needs an independent earth. The DNOs requirement is 2 meters separation from any metalwork connected to the PME network, which I am confident you can establish. 

    Regards, UKPN ?Zap


     


    The BS 7671 requirements for simultaneous contact between earthing systems is 2.5 m (arm's reach).


    As I said earlier, the separation of earth electrodes to buried metalwork underground is a separate requirement.


Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines