Pardon me, but this was getting (a bit) OT in the "theorists" thread. About 12 years ago, Pacific Gas and Electric {and a few other EUSERC member utilities here out west} modified their service-entrance ¡°Green Book¡± to allow for landing the odd phase of 240∆ on any position in a CT section {as long as clearly identified}, but still required righthand mounting in self-contained [¡Ü200-amp] sockets. The reason for holding out on the RH requirement in the meter was evident if you closely examined the meter internals. The two 120V phases had to be grouped together for lack of room for busbar crossover under the glass to do otherwise.

Nowadays, where a universal, solid state, wide-voltage-range, don¡¯t-even-care-of-it¡¯s-delta-or-wye meter is installed, some utilities have caved in and allow the anarchistic 208V leg on the center jaws of a self-contained meter, because it finally won¡¯t affect accuracy or become bar-b-qed on heatup. This wasn¡¯t the case with electromechanical meters. {Even more proof of the entrenchment of 4w∆ over here, paul¡­}