Why Do We Derate Circuits?
This often means the maximum amount of power allowed to pass through the circuit is reduced. To change the amount of power on a circuit, we change the size of the fuse that protects it. In newer switchboards this can be a simple case of swapping out the fuse, in older boards it may require an upgrade of the switchboard in order to make the electrics compliant.
Cross-Hatching
When it comes to choosing home insulation the rule of thumb has always been to choose the highest ‘R-value’ that you can afford. R6 batts cost more than R4 and provide better insulation. In the long run, however, the energy savings will far outweigh the initial cost of purchasing the more expensive batts.
