The Shop > Our Shop

Workshop Electrics

<< < (4/5) > >>

Arbalist:
If I can ask another question, I was planning on running a six double socket (metal clad) ring using T & E in 20mm plastic conduit. It ccurs to me though that for physical reasons it would be nicer to run two, three socket spurs from the consumer unit instead. Would this make much difference? It's only me in the shed so I can only use one piece of kit at a time.

lordedmond:
Ok

The rule for domestic instalations is you can have any number of 13amp outlet on one ring main with 32amp MCB or fuse and you can spur off from them

If you go for spurs for each socket you will need a MCB 16 amp for each one thus a larger consumer unit

For a modest WS one ring will suffice but put in twice the number of double outlet above the benches that you thing you will need

T&E in conduit is not the best way if you want to use conduit use single core cable it will be easier to poke down , but do you need to use it?

Put a couple of SS outlets down low they come in useful

Have fun and be safe

Stuart

Arbalist:
Glad I asked Stuart, very good point about the T & E! I think I'd prefer to use conduit, it's not expensive and it adds another level of protection for the cable. I'll have to price up some single core cable though, it may not be cost effective ...

SS outlets?  :scratch:

lordedmond:
Forgot one very important point you mentioned metal clad SSK,s

You will need to provide a jumper  covered in earth marked sleeving from the box to the socket itself that same sleeving should also cover the bare earth conductor from the striped back T&E

As you can see it's all in the bonding.

A point the lads across the pond often demonstrate this error they place the outlets in the line of fire from the lathe or mill and they then get all the swarf thrown at them so think where you place them , never in a place where you need to reach over the machine to turn it off

Placement of the consumer unit should be just inside the entry and exit door low enough for anyone to reach just in case

If there are ankle biters about then consider a key switch to keep things under your control

I know I am very safety minded with electric but it can kill and does so we all work alone in our WS so why not make it safe at least as far as the sparky bits goes

Stuart

SS outlet Switched Socket outlet dropped back into the short hand

awemawson:
Stuart,

What's your view on single phase sockets on three phase machines? Several of my three phase machines have such things as DRO's and lights which are single phase via 13a plugs. Machines well away from walls so cables to the wall socket would be a trip hazard.

All the three phase machines are fed via a 30 mA RCD, and what I've done (actually did another this afternoon) is to fix a single phase socket on the machine, picking up phase 1 via a suitable breaker. Machines are earth bonded. I make sure every socket is on phase 1 as that is the phase the wall sockets use.

Navigation

[0] Message Index

[#] Next page

[*] Previous page