Cable calcs

What does Ib stand for?

• Fuse rating

• Tabulated current

• Design current

• Current carrying capacity of cable

What does In stand for?

• Fuse rating

• Design rating

• Tabulated current

• Current carrying capacity of cable

What needs to be higher, Ib or In

• Ib

• In

Would a 30A fuse be a BS3036 or a BSEN 60898?

• BS3036

• BSEN 60899

Would a 32A fuse be a BS 3036 or a BSEN 60898?

• BS 3036

• BSEN 60898

What is the maximum voltage drop allowed for lighting?

• 2%

• 5%

• 3%

• 6.5%

What is the maximum voltage drop allowed for power circuits?

• 2%

• 3%

• 5%

• 11.5%

The maximum voltage drops allowed are percentages of what?

• 100

• 400v

• 230v

• 600

What do we have to do to power if we are calculating design current for discharge lighting?

• divide by 1.8

• divide by .8

• multiply by 1.8

• multiply by .8

What do we multiply power factor by to find design current?

• power

• current

• voltage

• resistance