I always though that an HVAC disconnect(disco) would need work space clearances (WSC) because they have to be serviced. Now the Dep. of Community Affairs tell me that the HVAC disco does not need WSC because it is not "serviceable equipment". I said, OK maybe that would be so if there are no fuses, but I believe if there are fuses, you need WSC. That would be the way I call it if I see it.