Electrical Safety and Protection Quiz

Which regulation specifies that 'effective means, suitable placed for ready operation, shall be provided so that all voltage may be cut off from every installation' to prevent or remove danger?

• 132.15.201

• 341.1

• 411.3.3

• 537.5.1.1

What is the definition of a device designed to 'make and break contact against the flow of current i.e. on load'?

• an isolator

• a switch

• a circuit breaker

• an RCD

What is the definition of a device designed to 'make and break contact off-load'?

• a switch

• an RCD

• an isolator

• a circuit breaker

What is confirmed by regulation 537.3.1.3?

• switches display ON and OFF clearly

• functional switches may control current without opening the poles

• switching signs are clearly displayed

• switches are of the correct design

What protective device provides the function of a residual current device with a circuit breaker, in the same enclosure?

• MCCB

• MCB

• RCD

• RCBO

Which one of the following devices is not designed to protect against overload currents?

• MCCB

• Circuit Breaker

• Fuse

• RCD

What type of protective device is designed to withstand high circuit current interruptions during high fault current flow?

• BS3036

• BS88

• BS1362

• BS1361

What protective device is best suited to protecting against earth leakage currents, overload currents and short-circuit currents?

• Cartridge fuse

• RCBO

• MCB

• RCD

What properties should all electrical connections have?

• electrical strength

• mechanical and electrical strength

• mechanical strength

• none of the answers shown here

What type of cable enclosure system should not be used in areas with regular changes in ambient temperature?

• steel conduit

• High impact PVC conduit

• Steel trunking

• MIMS