I can't see from the picture, is there a main OCPD?
I can't see from the picture, is there a main OCPD?
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Obsessive-compulsive personality disorder (OCPD) ...i doubt it
An over current protective device is not required...the circuit breaker feeding this DB will be suitably rated to protect the cable feeding this DB...well it should be.
The earth leakage device is being used as a main switch which is normal...just a pain in the butt for the tenant...having to fiddle in the dark trying to find the DB to reset it...unless they are smart like some of us and have a solar system installed with backup power and lighting.
Ishmaelmo (25-Oct-18)
OCPD = over current protective device ie circuit breaker that trips at a predetermined current or could even be a fuse. Some earth leakage breakers don't offer over-current protection, only earth leakage protection.
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Ishmaelmo (26-Oct-18)
In most cases...Over current protection is not required in domestic installations...the breaker feeding the DB would generally be a 50 or 60 amp...the cable feeding the db will be a 10 or 16 mm...which protects the cable and the tails from the earth leakage to the top of the breakers.
Over current protection is "generally" only required in larger 3 phase DB's where there is earth leakage on each phase fed from a supply rated higher than 60 amps....in which case you would fit a 60 amp circuit breaker before the earth leakage.
Thanks everyone. I really learned a lot.
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