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'?
an isolator
a switch
a circuit breaker
an RCD
What is confirmed by regulation 537.3.1.3?
switches are of the correct design
functional switches may control current without opening the poles
switches display ON and OFF clearly
switching signs are clearly displayed
What is shown here?
an isolator
a firemans switch
a switch fuse
a fused switch
What type of switching configuration is shown in the diagram here?
spst
dpdt
dpst
spdt
What protective device provides the function of an residual current device with a circuit breaker, in the same enclosure?
MCB
RCD
RCBO
MCCB
What protective device provides the function of a miniature circuit breaker usually fitted to protect supply cables?
MCB
RCD
RCBO
MCCB
Which one of the following devices is not designed to protect against overload currents?
RCD
Fuse
Circuit Breaker
MCCB
What type of protective device is designed to withstand high circuit current interruptions during high fault current flow?
BS1361
BS1362
BS88
BS3036
What protective device is best suited to protecting against earth leakage currents, overload currents and short-circuit currents?
RCD
MCB
RCBO
Cartridge fuse
Which one of the following term describes 'Basic Protection' ?
protection against electric shock under fault-free conditions
protection against receiving a shock by touching metal trunking that has become live
protection against receiving and electric shock by touching two different extraneous metal parts simultaneously, one of which is live
protection against receiving a shock from the metal body of a motor (for instance)
Which one of the following best describes the term 'Fault Protection' ?
protection against removing a cover from a piece of electrical plant and receiving an electric shock
protection against being able to stick your finger into an electrical enclosure and receiving and electric shock
protection against electric shock under single-fault conditions
protection against accidentally touching an overhead line whilst working from a ladder
What properties should all electrical connections have?
mechanical strength
electrical strength
mechanical and electrical 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
Steel trunking
MIMS
High impact PVC conduit
What type of cable support system is shown here ?
Cable tray system
Cable basket system
Ladder system
Cable ducting
What is the minimum percentage of space, allocated for 'cooling ' in this trunking ?
35%
45%
55%
75%
What is the maximum percentage of space, allocated for 'cables ' in this trunking ?
35%
45%
55%
75%
What is the minimum space allocated for cooling inside a 'ducting' ?