Phasing on SmartPack portable packs 12x10A

To be able to distribute the load I have the following question:

In three phase operation (CEE 3P400 + N + G), how is the phasing for the Smartpack?
Is it channel 1-4 phase R, channel 5-8  phase S, and 9-12 phase T?
Or is it 1->R, 2->S, 3->T

thanx in advance,

J

 

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