electrical installations in a milking parlour?

Question

lighting installation in a milking parlour, what type of lights, what type of conduit, switches, and cable etc

have a college assignment to do concerning a lighting installation in a milking parlour. The question reads "state appropriate wiring systems and enclosures for each of the following installations, and give reasons for your choice" a,A lift installation b,Alighting installation within a milking parlour c,An undergroung cable running across a busy driveway d,A socket installation within a computer room e,Supplies in an industrial workshop where machines may be required to change locations from time to time.

Answer 1

Please refer to BS7671 for all requirements for electrical installations.
You will need an installation electrician with both C&G 2381 and C&G 2391 for this work.

Answer 2

Milking parlour must be robust to avoid damage by half ton cows bumbling about, it has to be hygienic, as it is technically part of the food production process and it must be capable of being washed with a hose or even a steam cleaner. It should be protected to code IP54 or 55. Personally I would use robust plastic enclosures connected by Steel Wire Armoured cable and earth bond every bit of metal in the place.

Answer 3

Use plastic conduit and vapour proof florescent fittings to IP65, switches and other accessories should also be IP 65 ie MK master seal.Consider making the whole insulation double insulated and make adequate provisions for equipotential bonding, live stock are very susceptible to even very low current electric shock.

Answer 4

UK answer
depends on construction of building.
would probably opt for pvc conduit and accessories with ip 67 accessories mk master seal or equivalent either this or swa with appropriate glands (cw type or water proof )and 20mm galv conduit boxes and stuffing glands.
light fittings non corrosive such as crompton tufflight.
all circuits will need to be rcd protected and check the regs for any special info.
(best to get someone who knows what they are doing, but good luck)
New part P regulations cover dwellings but I dont think that this would be included?

Answer 5

Your question reads as if you were a Brit. You folks have used mineral insulated (MI ) cable for years on ships and offshore oil platforms. It should work well for fixed cables. Cables for use where it is flexed when used should use stranded conductors in water resistant insulation.

Answer 6

local code will determine this ( think conduit and GFI - lots of moisture and damage potential )

this is not a do it yourself type thing - code will require an electrician ( and your insurance company will also )