I have a problem / transient / conundrum whatever you want to call it either in my house electrics or from an external source.
Background:
New house, 3 phase incoming, split over 5 RCBO covering all power outlets (LNE) plus 12 CB’s for other circuits including the ac units and water heaters (8 units) they are also LNE.
Location is Thailand, therefore all electrics are suspect as the wiring code is at the whim of the “electrician” although I believe that the installation in my case is 100% as it undertaken by an experienced industrial electrician carefully watched over by myself. However, what is in the street and the way the street lights are wired, transformers installed etc. is anyone guess.
Problem / concern / looking for understanding.
On one of the power outlet, I have a power board for the TV, DVD, satellite system etc. The power board has two indicating lamps incorporated. 1. Power-on, 2. Indicates earth disconnected if both power and the second lamp is on.
During the day only the power indicator is on, early evening and night the earth disconnect indicator comes on and goes off early morning, earth disconnected light comes on at the same time as the housing estate street lights come on and goes off in the morning when the street lights go off.
Have checked during the day, L-N 220V, L-E 220V, N-E Just a flicker maybe 1V.
After the street lights come on L-N 220V, L-E floating a bit 210V, N-E 27 /28 V.
Further, I have just installed a new on demand water heater in the bathroom, this has 3 lights, power, ELCB and earth, during the day the earth lamp is on but off during the evening / night. As with the power board, this also coincides with the street lights coming on /off.
To date there has not been any apparent problems with electrics, no tingles or bites from computers, washing machine etc. The only exception to this is, in the 2 years we have been in the house, the RCBO on the water pump has tripped twice during the night, now it’s possible that the pump wasn’t even called to come on line during the time of going to bed and getting up in the morning. It’s unlikely a moisture problem with the pump / cables etc. as the pump is well protected from the elements in a dry area and the pump has never trip the RCBO during the day / when working.
My feeling is it is a problem coming from the street lighting and the way it is wired into the power supply in the street.
Thanks
Any thoughts / ideas / suggestions are most welcomed.
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
Background:
New house, 3 phase incoming, split over 5 RCBO covering all power outlets (LNE) plus 12 CB’s for other circuits including the ac units and water heaters (8 units) they are also LNE.
Location is Thailand, therefore all electrics are suspect as the wiring code is at the whim of the “electrician” although I believe that the installation in my case is 100% as it undertaken by an experienced industrial electrician carefully watched over by myself. However, what is in the street and the way the street lights are wired, transformers installed etc. is anyone guess.
Problem / concern / looking for understanding.
On one of the power outlet, I have a power board for the TV, DVD, satellite system etc. The power board has two indicating lamps incorporated. 1. Power-on, 2. Indicates earth disconnected if both power and the second lamp is on.
During the day only the power indicator is on, early evening and night the earth disconnect indicator comes on and goes off early morning, earth disconnected light comes on at the same time as the housing estate street lights come on and goes off in the morning when the street lights go off.
Have checked during the day, L-N 220V, L-E 220V, N-E Just a flicker maybe 1V.
After the street lights come on L-N 220V, L-E floating a bit 210V, N-E 27 /28 V.
Further, I have just installed a new on demand water heater in the bathroom, this has 3 lights, power, ELCB and earth, during the day the earth lamp is on but off during the evening / night. As with the power board, this also coincides with the street lights coming on /off.
To date there has not been any apparent problems with electrics, no tingles or bites from computers, washing machine etc. The only exception to this is, in the 2 years we have been in the house, the RCBO on the water pump has tripped twice during the night, now it’s possible that the pump wasn’t even called to come on line during the time of going to bed and getting up in the morning. It’s unlikely a moisture problem with the pump / cables etc. as the pump is well protected from the elements in a dry area and the pump has never trip the RCBO during the day / when working.
My feeling is it is a problem coming from the street lighting and the way it is wired into the power supply in the street.
Thanks
Any thoughts / ideas / suggestions are most welcomed.
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
