wiring a two post lift?

[93fxdl]

Have just purchased a used 3 phase 3 ton 2 post lift and need some advice on cable size.
The run will be approx 100 feet, will 2.5 mm dia be sufficient and how many runs do I need, 3 + neutral with earth to ground or will it need earthing back to the distribution board
Tia Glenn

[gtviva]

2.5mm wont be far off the correct size but check the amps rating on the motor plate, 3 phase might not need the neutral dependant on what type of control gear you have but its always worth running one in for future use or even if you want a 13amp socket on the ramp for a lead light, the earth needs to run back to the supply with the other cables

[slater]

You need to know how many Amps it will draw (can be calculated from wattage or horsepower of the motor) I'd imagine a 16amp supply on 2.5mm will be sufficient tho.

You need to run a earth back to the distribution board. It is 'acceptable' but not ideal or recommend to use the cable armouring for this.

A netural won't be needed if it's just a motor but if there's anything electronic or 240v single phase on it you will need a neutral. It might be worth running one and putting a couple of rcd protected sockets on there anyway. They come in handy!

[93fxdl]

Thanks for the replies. Will not need any single phase as have plenty of sockets close to where the lift will be located, does this mean I just need 3 live feeds and an earth for the lift? Will be picking it up tomorrow so can give more concise info on motor size
Tia Glenn

[Phil H]

Depends on the control used, generally though it should say on the rating plate or connection diagram at 3P+N if it also requires a neutral although there are always ways round these things..

[93fxdl]

Cannot find any rating plates on it, but has the original install wiring,2.5mm 3 and earth, so have ordered some 3 core armoured and will use the armour for earth.
Thanks for all the advice
Ttfn Glenn