Type of RCBO on a priority unit?

Ninja1000

Hi guys

Okay so I had a client tell me that the RCBO was tripping
their priority unit for a shower when either shower is on. I tested both circuits and no fault came up. I inspected all terminals no damage to cables. However I did notice that the RCBO was a type B.

Do type B MCB's and RCBO's tend to trip when supplying contractors controlling inductive loads?

Should a type C RCBO of been used here? And should I swap the RCBO for type C?

Bruthal

Try a different rcbo

Sleeper12

Different RCBO of the same type will most likely resolve the issue. Not everyone agrees but in my experience with electric showers I come across quite a few of seemingly healthy RCBOS that have become over sensitive or trip intermittently. Replacing the RCBO should resolve the issue

Xtrail14

Don’t use Wild Buzz in his red micra to replace it.

Ninja1000

Sleeper12 wrote: »

Different RCBO of the same type will most likely resolve the issue. Not everyone agrees but in my experience with electric showers I come across quite a few of seemingly healthy RCBOS that have become over sensitive or trip intermittently. Replacing the RCBO should resolve the issue

Yea that's what I did anyway. I replaced the RCBO just incase but I wasn't completely comfortable walking away without finding exactly what was causing the problem.
I like when I find the culprit it makes me sleep better at night knowing that I won't have to go back to the house lol

Thanks for the advice lads

meercat

Sleeper12 wrote: »

Different RCBO of the same type will most likely resolve the issue. Not everyone agrees but in my experience with electric showers I come across quite a few of seemingly healthy RCBOS that have become over sensitive or trip intermittently. Replacing the RCBO should resolve the issue

I agree