Again, referring to the manual, do not exceed the recommended amperage draw per outlet on the bar, not just the bar's total capacity.
Doing so will cause the bar to prematurely fail.
If you keep your amperage draw below the recommended limits you can expect the bar to last many years.
Remember to add up your total usage;
Being rated @ 6 x 5A and 2 x 10A is 50A, but the whole unit is still only rated @ 15A
The EnergyBar 8 provides eight switched 120V outlets. They are numbered 1 through 8 as illustrated on the device. Outlets 1-3 and 5-7 are switched with silent solid-state devices and can power items up to 5 amps each. Outlets 4 and 8 are switched with relays and can power items up to 10 amps each.
The total current draw for all active outlets must be less than 15 amps.