I have moved into a house in Hua Hin last year and had some problems with the electrics.
House was built over 10 years ago.
The board was tripping out all electrics for a short time periodically.
I had solar installed last December and have had to figure out all the wiring because at the time there were a number of issues identified.
I think its been well stated that the electrical systems installations here can be a problem.
As a reminder to people, what I found shows that they do anything they want with no respect for standards or safety.
Use any color of cable and bits of wire they have, making multiple joins changing color and sometime size.
All kitchen on one circuit 32 amp breaker, hob oven and water heater included, Oven and hob are 6.4 + 2.6 KW (although unlikely to use all at once, we rarely use more than a few KW)
No separate breakers. Wire size 2.5sqmm from roof, 4sqmm cable connected to 2.5 at back of units looks better but most should be at least 6mmsq.
Earth looks ok in kitchen but too small (1.5 sqmm) and then I found not connected in roof.
Water heater 6KW was on wiring 2.5 sqmm and one wire dropped to 1.5 sqmm. No separate breaker. Earth appears to be connected ok at 1.5sqmm.
When used with other appliances occasionally it was tripping the whole system for a short time when initially switched on. The mains is 15/45 amp.
I can see the sharp surge on my solar app.
Air conditioners not earthed. Earth wire looks ok to two units but earth not connected in roof. Then also, no earth to outside compressor.
Two AC's connected together onto 32 A breaker without individual breakers.
Lots more lesser problems, but i think the above illustrates how bad some important things can be.
I am nearly complete on adding the wiring and breakers.
Work has been necessary on the main board and that's where I note my initial topic for any advice / comment please
In the main board there is a direct wire connection from the earth strip to the neutral strip.
I checked online and it seems to be correct. As follows:
Should I be concerned about bonding the Neutral-to-Ground Bond in the main panel?
Neutral-to-ground bond is needed to properly operate the circuit breakers. Over Current Protection Devices (OCPD) such as circuit breakers and fuses actually require a short and intense INCREASE in electrical current (a short) in order to detect the fault and cut the circuit off. Without a sharp and drastic increase in electrical flow, a fault could go on without triggering a circuit breaker to stop the flow. This actually occurs quite often and can be measured easily by checking the amount of current flowing on your ground conductor. It should be less than 1-amp in most cases. If the current flowing on a grounded conductor is higher than an amp, and you are not in a high-voltage (600V+) environment, it typically indicates an erroneous neutral-to-ground bond somewhere in the system.
I therefore assume it is ok for the connection here in Thailand, unless I get advice to the contrary.
Thanks in advance for any advice. It may also be useful for others to know.