BS4293 now known as 61008

[mark64]

Just conducted a PIR on a village hall, but contained in the DB was a 30a 30mA RCCB to BS4293 being used to supply power for stage lighting. Does anybody know what the maximum Zs value permitted by BS7671 would be, cant complete report until info is obtained

Many thanks

 

[RF Lighting]

It appears that BS 4293 is a standard for RCDs.

Was there an overcurrent protective device in series with the RCD?

If so, the details of this device should be used to ascertain the maximum permissible Zs for the circuit.

If not, the supply needs switching off, and given a code 1 on your report.

 

[Lectrician]

Maximum ZS value for an RCD?

Umm........

Somethings a miss here!

 

[mark64]

It appears that BS 4293 is a standard for RCDs.

Was there an overcurrent protective device in series with the RCD?

If so, the details of this device should be used to ascertain the maximum permissible Zs for the circuit.

If not, the supply needs switching off, and given a code 1 on your report.

The rcd was fed directly from a 100mA time delay RCCB. Let me enlighten you on the subject.

Meter tails via meter into a metal MK dual dist board 100mA RCCB main switch.
Some plonker has retro from the bottom of the 100mA tails feeding 2 banks of BS3871's and directlt from the 100mA main switch is feeding a 30mA rcd that in turn is supplying power to an isolator for the stage lighting

 

[mark64]

It appears that BS 4293 is a standard for RCDs.

Was there an overcurrent protective device in series with the RCD?

If so, the details of this device should be used to ascertain the maximum permissible Zs for the circuit.

If not, the supply needs switching off, and given a code 1 on your report.

The rcd was fed directly from a 100mA time delay RCCB. Let me enlighten you on the subject.

Meter tails via meter into a metal MK dual dist board 100mA RCCB main switch.
Some plonker has retro from the bottom of the 100mA tails feeding 2 banks of BS3871's and directlt from the 100mA main switch is feeding a 30mA rcd that in turn is supplying power to an isolator for the stage lighting

so far i'm upto 12 code 1's for the installation- best they dig deep for the remedial work

 

[Spark123]

So the stage supply doesn't have an overcurrent protection device or is using the cutout fuse?
30A doesn't see massive, our stage lights take 30A per phase and are split over 3 phases with 63A breakers.

 

[securespark]

Maximum ZS value for an RCD?

Tch! Everyone knows it's 1666 Ohms....


(Please, that was a joke. If you have a circuit protected by an RCD with no overcurrent device (fuse, CB, etc), then seek advice.)

 

[Pensdown]

so far i'm upto 12 code 1's for the installation- best they dig deep for the remedial work

Sounds quite messy....any pic's?