My question is simple, all panel boxes are rated, i.e 100 amp 150 amp and so forth. Is that the total amperage across both hot bars or is that a rating per hot bar. For example, if I max out 100 amps of equipment on one hot bar, would I have available to me 100 amps on the other hot bar or am I...

My water softener manual states that its rated capacity is: 8,000 grains with 1.8 lbs. of salt 13,300 grains with 3.8 lbs. of salt 18,800 grains with 10.2 lbs. of salt What does this mean? Is there a setting somewhere where I need to tell it how much salt to use on regeneration? Thanks!