Emergency Light Test Switch.

jbrameld:

Zoomup:

The fused connection unit fuse will only be removed once a year for emergency light battery testing. Short duration monthly tests can be carried out by turning off the local lighting circuit R.C.B.O. My installation is not a place of entertainment or similar.


Z.

Note 5 to table 537.4 cautions against the use of circuit breakers and RCDs for 'frequent' load switching unless supported by manufacturer's instructions. If monthly counts as 'frequent' or not would be a matter of judgement as it is not a defined term.


Jason.

You missed out the bit about infrequent switching of circuit breakers Jason, being permissible for isolation, even on load. Table 537.4 is only for guidance. We can apply 120.3 and record a "deviation."


Edit. Add. Of course the lighting R.C.B.O.  will not be fully loaded if the emergency light test is carried out during the day.


 

jbrameld:

Zoomup:

The fused connection unit fuse will only be removed once a year for emergency light battery testing. Short duration monthly tests can be carried out by turning off the local lighting circuit R.C.B.O. My installation is not a place of entertainment or similar.


Z.

Note 5 to table 537.4 cautions against the use of circuit breakers and RCDs for 'frequent' load switching unless supported by manufacturer's instructions. If monthly counts as 'frequent' or not would be a matter of judgement as it is not a defined term.


Jason.

You missed out the bit about infrequent switching of circuit breakers Jason, being permissible for isolation, even on load. Table 537.4 is only for guidance. We can apply 120.3 and record a "deviation."


Edit. Add. Of course the lighting R.C.B.O.  will not be fully loaded if the emergency light test is carried out during the day.