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Electrical Wiring for a Welding Platform within the Oil Industry

Former Community Member
Former Community Member

I was wondering if you could help us out has I'm presently working on a 4 Storey Platform for a project for the Oil and Gas Industry.



Now this Platform is basically for Welders to work on now there is a Power Source that is a Permanent Fixture in a building containing 110v,230v and 400v connections and these connect in a way like a long extension lead using Caravan type Hook-up Extension Leads to the 4 Storey Platform structure.



Cables used for this structure are for 110v Single Phase Neutral and Earth Cable (32A),230V 32A Single Phase Neutral and Earth Cable and for 400v this is 32A 3 phase Neutral and Earth Cable which connects to the Platform itself.Now the Lighting on the Platform is in the form of 26W LED Type Lighting of there are 3 sets  of these on each floor but my question is what type of cable would run the lights to power them up would it still be 110v 32a Single Phase Neutral & Earth Cable or would it be Twin & Earth 1.5mm2 Cable.And the Sockets for the office containment on the first floor would they be of 2.5mm2 or 4mm2 and not 230v 32A Single Phase Cable.I Can understand there is a interface connection for the Welding Equipment this being 230v Single Phase Neutral & Earth Cable Connection. So was wondering has to your thoughts on the sockets and the lighting on this structure?.



Regards



Jimmy2Rivers


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    I think that you should go back to the client and ask exactly what he wants. I assume that the power comes from a generator on the rig, how big is it? This affects the design of the power distribution system, and the circuit protection. Welding equipment also has somewhat unusual characteristics, and older transformer stuff poor power factors, whilst inverter ones can take very large currents if the supply voltage drop is excessive (to give constant output power). You say a caravan type hookup, does that mean there is no fixed wiring, and everything is in flexible cables which can be moved around? If so you probably need a distribution point on each level with the various sizes of sockets, CPDs, etc with a big cable back to the generator. This kind of thing can be bought from Rubberbox and others Link here.

    Suitable HO7RN-F cables then complete the job, although the oil industry sometimes uses even more tough cables, so check. 63 or 125 A coloured connectors to BS4043, see link are very rugged and strong and used for the primary distribution to the boxes.
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  • 0
    I think that you should go back to the client and ask exactly what he wants. I assume that the power comes from a generator on the rig, how big is it? This affects the design of the power distribution system, and the circuit protection. Welding equipment also has somewhat unusual characteristics, and older transformer stuff poor power factors, whilst inverter ones can take very large currents if the supply voltage drop is excessive (to give constant output power). You say a caravan type hookup, does that mean there is no fixed wiring, and everything is in flexible cables which can be moved around? If so you probably need a distribution point on each level with the various sizes of sockets, CPDs, etc with a big cable back to the generator. This kind of thing can be bought from Rubberbox and others Link here.

    Suitable HO7RN-F cables then complete the job, although the oil industry sometimes uses even more tough cables, so check. 63 or 125 A coloured connectors to BS4043, see link are very rugged and strong and used for the primary distribution to the boxes.
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