120/208Y to 120/240V high-leg delta connection?

[sinforoso]

Has anyone come across this type of installation before? The MDP serving this building we're renovating is a 120/208Y switchboard, but the loads we're concerned with are fed from a 120/240V 3P 4W high-leg delta panel fed from the MDP.

High-leg delta panels are not very popular as I've been able to gather, if nothing else for the fact that the high leg basically prevents you from using 1/3 of the available spaces as far as single-phase loads are concerned. I've encountered these panels before, however, though they were invariably fed from a transformer designed for this purpose and not from a "regular" 120/208Y panel.

I was just hoping to get some additional background on this, as I'm pretty sure this is the first time I've come across this particular setup.

Thanks

 

[texie]

Has anyone come across this type of installation before? The MDP serving this building we're renovating is a 120/208Y switchboard, but the loads we're concerned with are fed from a 120/240V 3P 4W high-leg delta panel fed from the MDP.

High-leg delta panels are not very popular as I've been able to gather, if nothing else for the fact that the high leg basically prevents you from using 1/3 of the available spaces as far as single-phase loads are concerned. I've encountered these panels before, however, though they were invariably fed from a transformer designed for this purpose and not from a "regular" 120/208Y panel.

I was just hoping to get some additional background on this, as I'm pretty sure this is the first time I've come across this particular setup.

Thanks

The only thing that comes to mind is maybe at some time this was feeding an area where they just had to have 240 volt.