Supply to Portable buildings and portacabin/container

[Strima]

Your not clutching. Take a real world look at diversity, not what's written in the OSG.

If you applied the OSG theory to a standard domestic property they could have you drawing around 50 amps, but in reality it would be closer to 20 for example.

I haven't had much to do with supplying locations such as this, once all is connected I would probably carry out a few tests to see if there is a potential difference between containers. No doubt someone will be along soon to correct me.

 

[Wilko]

If there is anything to be bonded you might TT the remote container perhaps?

I like the wording of this paragraph.....(the bottom one)

I dont envisiage any of the load per phase to exceed 20A and therefore the results are going to differ tot he tabulated values.

what you think? i know i'm clutching.....

Dropbox - IMG_20170925_194949.jpg - https://www.dropbox.com/s/46ym3q6xiiauyob/IMG_20170925_194949.jpg?dl=0

Unless the installation draws full load for significant periods the conductor won't be at 70C . In my humble opinion if average load is 20A on 25mm cable the temp won't rise and resistance at ambient temp may be more relevant. But you are doing a design with 63A fuse .

 

[Thebonse]

I'm down rating it to 20a/phase

Absolutely certain it'll never come close.

The containers are the same as the portacabins. Proper metal.

Only real difference is the cabins have a consumer unit.

To be safe they will all be rodded and bonded to each other.

 

[telectrix]

Stop thinking, it makes you tired...

i been tired for years. . usually soon after 11.00a.m.