I bought some specs from the Trafford Centre so I’ll pop back in a week or two to see if any more kit has turned up. I think it’s due to be one of the larger sites and the cabling and fenced off areas certainly give that impression.Yes that looks identical to foundations for other Supercharger power supplies. Expect a big green box, a thinner grey/silver one and a transformer to eventually be sited here. Nearby there will be separate bases for the V3 charger cabinets (I think 3 or 4 are expected at the Trafford Centre), I think they are prefabricated so may not be on site yet.
The works appear to start at (53.4670650, -2.3538801) and goes round the corner of the car park to (53.4672029, -2.3525028).