The house was built in 2006/7 and maybe the sparky used ELB's that were more common then or ones he had been carrying around for years? Maybe that's why he used them on the aircon power lines as well? They are Haco brand, 32 A and have 'ELB' and 'Earth Leakage Breaker' wrote large on them. They are virtually identical to the appended except the newer ones seem to have an LED now.sometimewoodworker wrote: ↑December 16, 2019, 11:05 pmELBs are virtually unheard of today, do you mean RCBOs/RCCBs? They are usual on showers but not normal on AC units but certainly won’t do any harm
You don’t have any in your CU and it will probably be difficult to put them on individual lines in the CU as you almost certainly will have borrowed neutrals. You an easily add them just before the showers.
If you don’t have one it would be very good practice to add one, from what you have shown so far you don’t. You should add it before the CU You probably don’t have enough room to put it in the CU.
I do recall not seeing too many CU with built-in RCBO/RCCB back then which is ideally what I need now. I did have a rental in Komen City once that had a separate RCBO mounted beside the CU but it didn't seem to do anything when I had a kitchen appliance drop a dead short across that line and a small fire in the appliance wiring! There are better choices these days and I have scoped out Schneider range of CU products that kopkei uses already.
This is all good information so I can draft a comprehensive but realistic scope of work if I am lucky enough to find a more competent electrician in the new year.
Muchas gracias
El tam