The general recommendation when a duct furnace is used downstream of a cooling coil, is to use SS HX, SS burners and a drip pan. Usually, the problem is condensation on the cobustion side of the HX. Note, while placing the DF upstream of the cooling coil would reduce this, it is usually...
We are experiencing branch circuit fuse tip on 1 phase when a 100hp 460v NEMA-B motor starting a large fans in the x-line or VFD bypass mode. Motors start and run fine in VFD mode. Motor and wiring meg ok.
Fuses are 200 AMP Time delay. Their time curves indicate that they should hold the LRA...
