Running workshop power from another garden building

[NoobSteve]

I am setting up a new garden workshop. I plan to fit a simple 3-way consumer with RCD in the workshop and running power though an armoured cable from another garden cabin. The garden cabin already as a 32A feed and a consumer unit, but I am unsure of how to run the feed off this consumer unit to the new workshop.

Should it be connected in parallel before it gets to the cabin consumer unit, or should it be connected off an MCB in the cabin consumer unit?

Thanks
Steve

 

[NoobSteve]

Ok, I will get the electrician in first for advice before I start running any cables around the new workshop. I will be doing the sockets myself as I am boarding and insulating the workshop over a number of weeks and want all the sockets flush mounted. Can't get the electrician back in every time I get to a new socket.

 

[Dustydazzler]

He said he's going to fit a consumer unit = needs notifying

Not if it’s feed from an existing circuit it don’t

 

[Dustydazzler]

He said he's going to fit a consumer unit = needs notifying

Not if it’s feed from an existing circuit it don’t

 

[mattg4321]

Not if it’s feed from an existing circuit it don’t

So the new consumer unit isn't going to have any new circuits?

 

[buzzlightyear]

My question was purely out of interest in how it would be done.

ask the spark thats doing it .

 

[Dustydazzler]

Ok, I will get the electrician in first for advice before I start running any cables around the new workshop. I will be doing the sockets myself as I am boarding and insulating the workshop over a number of weeks and want all the sockets flush mounted. Can't get the electrician back in every time I get to a new socket.

There is nothing legally stopping you from doing the entire job yourself

But if you want it certified at the end you will need an electrician willing to sign it off for you

 

[Charlie_]

Ok, I will get the electrician in first for advice before I start running any cables around the new workshop. I will be doing the sockets myself as I am boarding and insulating the workshop over a number of weeks and want all the sockets flush mounted. Can't get the electrician back in every time I get to a new socket.

Don’t forget your derating factors for insulation

 

[mattg4321]

Ok, I will get the electrician in first for advice before I start running any cables around the new workshop. I will be doing the sockets myself as I am boarding and insulating the workshop over a number of weeks and want all the sockets flush mounted. Can't get the electrician back in every time I get to a new socket.

You can get electrician to first fix. You then insulate/board. Electrician then second fixes. Electrician supplies certification. This is how almost every job goes.

 

[Dustydazzler]

So the new consumer unit isn't going to have any new circuits?

yes and no

The new circuits require an eic

But I never bother to notify sub main boards

 

[NoobSteve]

Don’t forget your derating factors for insulation

That just means I need thicker cross section cable so it doesn't heat up as much?

 

[mattg4321]

By law, the homeowner or landlord must be able to prove that all electrical installation work meets Part P, or they will be committing a criminal offence.

According to Electrical Safety First anyway. In practice it doesn't work like this really

 

[Dustydazzler]

That just means I need thicker cross section cable so it doesn't heat up as much?

Something like that

 

[buzzlightyear]

Supply will be from the consumer unit in the cabin to the workshop which has a 32A supply. I am guessing that I will draw a max of 4kw at any one time which should be roughly 16A

no heater going in then .

 

[mattg4321]

yes and no

The new circuits require an eic

But I never bother to notify sub main boards

If it's a new circuit it needs notifying. How often would you install a sub board and not the final circuits though.

You can't just pick and choose what you notify and what you don't unfortunately.

 

[Charlie_]

Yeah and then apply diversity and you’re back where you’re started from