On 24/11/2019 11:10, John wrote:

Just curious (not clever enough to work it out) but why are 3 phase
chargers more powerful than single phase fed ones?

Is it just that the mains circuits have different capacities or is a 3
phase when rectified more powerful?

Three phase gives you a number of advantages. A typical domestic supply
is fused at 100A. So at 240V that limits the maximum rate of power
delivery to 24kW. A three phase supply will have three incoming live
phases all fused at 100A, giving total capacity of 72kW.

(there are other advantages to a 3 phase supply - such as having the
capability to power a load between phases rather than just between phase
and neutral, raising the available supply voltage to ~415V. Plus the
ability to do cleaver stuff with motors etc. However most of these will
not have much impact on car chargers)



--
Cheers,

John.

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