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EV Charging and Lamp Posts

richard64

We have a job wiring lamp post lighting in a private car park.

Somebody has decided that an EV point will be fitted at each lamp post and will supply the light.

When you apply the 3% volt drop for the luminaire, obviously the cable size increases substantially.

Any thoughts?

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    The design, and in fact the whole idea has not been thought through. Do you have a 3 phase supply, and how big is it? How many cars fit the car park? How many chargers are envisaged? This idea to supply some odd level of chargeing is daft. I suggest a large transformer, and a ring main or several, around the car park, probablly 300mm al conductors. The place to start is a 500kVA (or more) TX with TNS distribution, and 3 phase chargers, then it is simple. The lighting circuits should be separate because the cable cost will be less than the cost of jointing. Follow DNO practice. Perhaps the car park is for 10 cars, in which case ignore the charging altogether.

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    The design, and in fact the whole idea has not been thought through. Do you have a 3 phase supply, and how big is it? How many cars fit the car park? How many chargers are envisaged? This idea to supply some odd level of chargeing is daft. I suggest a large transformer, and a ring main or several, around the car park, probablly 300mm al conductors. The place to start is a 500kVA (or more) TX with TNS distribution, and 3 phase chargers, then it is simple. The lighting circuits should be separate because the cable cost will be less than the cost of jointing. Follow DNO practice. Perhaps the car park is for 10 cars, in which case ignore the charging altogether.

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