Change my pump wiring?

[carlyai]

A while ago I installed a 3 phase SafetyCut that trips at 30mA for the house electrics.

I separated the bore and house pumps from the house electrics and ran a separate phase feed.

The thinking was then that sometimes pumps cause SafetyCuts to trip. I'm not sure if this information is/was correct and now 4 years later (can't be that long ago, can it?), I'd like to include the pumps back on the house electrics.

Before I do this I'd like to know if pumps really do cause phantom SafetyCut trips.

My SafetyCut has only ever tripped when we have had a really close lightning strike.

The main reason I'd like to do this is because the house electrics are fed from stabalisers, where as the pumps have under and over voltage protectors and when the phase gets low the voltage protector cuts of the pump. SWMBO objects when I get into bed half covered in soap suds.

 

 

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[carlyai]

A while ago I installed a 3 phase SafetyCut that trips at 30mA for the house electrics.
I separated the bore and house pumps from the house electrics and ran a separate phase feed.
The thinking was then that sometimes pumps cause SafetyCuts to trip. I'm not sure if this information is/was correct and now 4 years later (can't be that long ago, can it?), I'd like to include the pumps back on the house electrics.
Before I do this I'd like to know if pumps really do cause phantom SafetyCut trips.
My SafetyCut has only ever tripped when we have had a really close lightning strike.
The main reason I'd like to do this is because the house electrics are fed from stabalisers, where as the pumps have under and over voltage protectors and when the phase gets low the voltage protector cuts of the pump. SWMBO objects when I get into bed half covered in soap suds.
 
 
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May have to think on this a bit more. I was going to start another thread on something I found while investigating why my pumps were off. Just thought the village had lost a phase, which is quite normal. When I checked and all the other houses had their lights on, I looked into the outside CU, and while poking around saw some arcing under the plastic where the main breaker connects to the 3 phase buses. I could not tighten the screw up as it was stripped in the pvc breaker box. So I have to fix this HR joint.
Then on reading Crossys pinned AVR topic (my hot water multi point 3 phase heaters are after the stabalisers) I measure about 18A per phase when 1 heater was on, I have two of these multi point units.
This couples with the 2 house water pumps (bore and house), the 2HP pool pump, and my other bore pump for the aquaponics system, has cause me to consider the whole set up.
I need at least one more sump pump for my aquaponics, so if two multi point heaters, plus back house and bore pump, plus pool pump, plus aquaponics pumps are all on at the same time with wifey washing, I'd better do some calcs and find out what all this means in terms if amps used.
I do have about 45 A per phase, so if it's all balanced, I will probably be OK, but back to the drawing board.


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[lopburi3]

I have always had all electrics on Safe-t-cut (or other such units) and have not had issues with false trips.