I mount meterbase/service equipment before brick all of the time. I fabricate a mounting bracket from 1/4" x 2" angle iron and bolt it to the plywood/OSB. It stands the equipment off of the sheeting 4-1/2". This allows the brick to be layed up behind the equipment leaving a gap to be caulked when they are finished.
We are allowed,and do use brick brackets for small service equipment. This particular equipment is around 150 lbs. I'll see if the supply house can get some heavy duty brick brackets for nexttime.
I see I'm not alone on this... its more common than I thought.
