WorksheetsRCDBO connecting
Total questions: 10
Worksheet time: 5mins
what does a RCDBO do
protects fault to earth
protects from overload
protects from short circuit
all of the above
what does RCDBO in electrical terms mean
residual current breaker with over-current
residual voltage breaker with overload
residual capacitance breaker with over- current
residual carrots breaker with over-current
why is it necessary to have RCDBO's installed for final sub circuit's
cos you can charge more money
as part of compliance it is necessary to protect cabling, live stock and humans from faults
its not necessary
only necessary if the client asks for one
what happens with the RCDBO if you have intermix on the neutral sub circuit's
wont be able to turn on as it will keep on tripping the device
nothing its fine
as long as the active is intermixed it will operate
hope for the best close your eyes
what are the correct connections
active to active
neutral to neutral
earth to earth
doesn't matter as long as the wires go somewhere
active to active
neutral to earth
earth to earth
active to neutral
what does MEN stand for
multiple earth neutral
male
multiple earth network
multiple earth node
what is the purpose for the test button on the RCDBO
the manufactures though is was a good idea
to test the operation of the device and making sure it is operational
tests all the circuits to make your life easy
doesn't have much or a purpose but fun to press
how often is the recommendation to test the operation of the RCDBO device
weekly
monthly
yearly
every six months
does the current rating of t he RCDBO matter when installing on a final sub circuit
no
yes the rating should be less than the maximum current capacity of the conductors taking in mind of derating factors and voltage drop
sometimes
only if its specified to do so
how many RCDBO's should you connect to a final sub circuit
as many as you like
one
two
three
