apex2000 Posted June 8, 2011 Share Posted June 8, 2011 I would like to know which is correct in Thailand - should the positive single-phase cable be the grey cable or the black cable? I have checked electrical outlets in several different homes and it seems that sometimes grey is positive and sometimes black! Is this Thai electrical standards? Thanks. Link to comment Share on other sites More sharing options...
CDNinKS Posted June 8, 2011 Share Posted June 8, 2011 Thai electrical standards? Link to comment Share on other sites More sharing options...
kevjohn Posted June 8, 2011 Share Posted June 8, 2011 check this link out Link to comment Share on other sites More sharing options...
Crossy Posted June 8, 2011 Share Posted June 8, 2011 To avoid confusion (and reading a long thread):- Black - Live, Line or Hot White / Grey - Neutral Green - Ground or Earth. There is no Positive or Negative as this is an AC supply. This page is well worth a read http://www.crossy.co.uk/wiring/ 1 1 Link to comment Share on other sites More sharing options...
apex2000 Posted June 8, 2011 Author Share Posted June 8, 2011 check this link out http://www.thaivisa....wiring-colours/ Thanks kevjohn. Just as I thought - the Thai standard is do whatever you like. As an example, my friend's house was wired with all switches switching the grey cable which was neutral (the black cable was live). Therefore the light fittings had live wires running to them at all times! My rented house has the live feed through the grey cable and neutral is black - the opposite to my friend's house. How is it that there are not more people dying through electric shocks or whatever? Having read the link you kindly gave, it seems that there is a standard but that no one follows it. In the link, those quoting IEC standards are wasting their time as there is no earth connection in a 'normal' Thai house and the colours are different here anyway. 1 Link to comment Share on other sites More sharing options...
apex2000 Posted June 8, 2011 Author Share Posted June 8, 2011 To avoid confusion (and reading a long thread):- Black - Live, Line or Hot White / Grey - Neutral Green - Ground or Earth. There is no Positive or Negative as this is an AC supply. This page is well worth a read http://www.crossy.co.uk/wiring/ Thanks. Your reply certainly has relieved the confusion of kevjohn's link! I have bookmarked your link for future reference. Link to comment Share on other sites More sharing options...
Popular Post lopburi3 Posted June 8, 2011 Popular Post Share Posted June 8, 2011 But; as has been said so many times, don't trust your life on it. Buy and use a neon indicator screwdriver and check each and every time at each and every connection that you work on. Not only are mistakes made (often) there are also a rainbow of colors in use here. 3 Link to comment Share on other sites More sharing options...
eraymos Posted June 9, 2011 Share Posted June 9, 2011 When I went with my electrican to buy wires, they came out with just about every color in the rainbow except black wire. I couldn't understand what the reason was for all the colors. In the end the house was wired with: Red - Live White - Neutral Green - Ground The lights are on 3 (10 amp) breakers. The electriciian said that live to load must be wired with 2.5mm wire the rest 1.5mm. The hob,oven, AC and hot water heater are wired with 3 wires 4.0mm Everything else is wired with 3 wires 2.5mm All inside ground wires are 1.5mm green. The main ground wire from CU to grounding rod is 16mm wire. He wired the CU with a MEN connection. I had not talked to him about a MEN. When I had my wife talk to him about this, he siad "must have" His English was not that good except when it came to electrical terms. Link to comment Share on other sites More sharing options...
electau Posted June 10, 2011 Share Posted June 10, 2011 In Thailand the standard colour of the neutral is White or Grey. The Neutral conductor should be clearly identified. The neutral conductor must never be a switched conductor unless the line and neutral are switched together , ie in a multi pole device. Green or Green /Yellow must never be used as a line or neutral conductor. Red, Black, and Brown can be used as line (active)conductors. Before carrying out any electrical work the correct identification of the neutral conductor is paramount, especially in Thailand. Japan and the US use Black as a line conductor and White as a neutral. Australia the neutral is black ( or light blue in electrical equipment) with Red, White and Dark blue as line (active) conductors. Brown is also a line(active) conductor. With imported electrical equipment the neutral conductor should always be identified. Link to comment Share on other sites More sharing options...
thaipod Posted June 10, 2011 Share Posted June 10, 2011 Any wire they like don't rely on colors . Thai electricians seem to have no rules .The only way is to test them with a tester , live in my house I've found two colors white and black 1 1 Link to comment Share on other sites More sharing options...
electau Posted June 13, 2011 Share Posted June 13, 2011 Any wire they like don't rely on colors . Thai electricians seem to have no rules .The only way is to test them with a tester , live in my house I've found two colors white and black White should be the neutral and Black the line or active conductor, for multi phase circuits the line conductors are all black. Link to comment Share on other sites More sharing options...
usacb500biker Posted November 24, 2019 Share Posted November 24, 2019 Testing a BALLASTER Testing a baluster how do you test it small on in Thailand 220 volts bathroom light small Link to comment Share on other sites More sharing options...
sometimewoodworker Posted November 25, 2019 Share Posted November 25, 2019 10 hours ago, usacb500biker said: Testing a BALLASTER Testing a baluster how do you test it small on in Thailand 220 volts bathroom light small All my balusters and possibly BALLASTERS are not electrical and are on the stairs ???? however do you mean a ballast used with a fluorescent tube? Link to comment Share on other sites More sharing options...
bankruatsteve Posted November 25, 2019 Share Posted November 25, 2019 (edited) 30 minutes ago, sometimewoodworker said: All my balusters and possibly BALLASTERS are not electrical and are on the stairs ???? however do you mean a ballast used with a fluorescent tube? Ballaster is something/one that provides ballast. But the small CFL type (like a pigtail) don't use an external ballast. Edited November 25, 2019 by bankruatsteve Link to comment Share on other sites More sharing options...
BlackJack Posted December 28, 2019 Share Posted December 28, 2019 my house is 2 core - positive and negative only a few areas have a copper pole as earth but not whole house I bought 2 sub woofers - plug in and stand alone - there are 2 RCA inputs on the back to connect the main amp I was getting a shock when i connected the system and used the micro phone I disconnected everything and just the subs plugged in to the 220v AC the RCA inputs are live - 112 volts AC Called the Pattaya shop and they are sales men only and as 2 subs are doing the same thing - i can assume its by design any ideas besides lugging them back to the shop? Link to comment Share on other sites More sharing options...
johng Posted December 28, 2019 Share Posted December 28, 2019 42 minutes ago, BlackJack said: i can assume its by design any ideas besides lugging them back to the shop? It shouldn't be by design at all !!! yes take them back to the shop and get a different brand. Link to comment Share on other sites More sharing options...
xylophone Posted December 28, 2019 Share Posted December 28, 2019 1 hour ago, BlackJack said: the RCA inputs are live - 112 volts AC That seems odd to me as these are usually only to carry audio or video signals.......not voltage of that magnitude. Link to comment Share on other sites More sharing options...
BlackJack Posted December 28, 2019 Share Posted December 28, 2019 31 minutes ago, johng said: It shouldn't be by design at all !!! yes take them back to the shop and get a different brand. Polk. Thoroughly researched as one of the best on the market. the 5 year warranty is unbeatable. the klipsch was an alternative however the onboard amps die quickly. sounds awesome. but kids are getting zapped using the mic for karaoke Link to comment Share on other sites More sharing options...
moontang Posted December 28, 2019 Share Posted December 28, 2019 12 minutes ago, BlackJack said: Polk. Thoroughly researched as one of the best on the market. the 5 year warranty is unbeatable. the klipsch was an alternative however the onboard amps die quickly. sounds awesome. but kids are getting zapped using the mic for karaoke is it grounded? Sounds similar to problems encountered when using ungrounded desktop computer.. 2 Link to comment Share on other sites More sharing options...
johng Posted December 28, 2019 Share Posted December 28, 2019 40 minutes ago, moontang said: is it grounded? Sounds similar to problems encountered when using ungrounded desktop computer.. Yes good point if they have a 3pin plug on them then it should be plugged into an earthed/grounded wall socket. Link to comment Share on other sites More sharing options...
Crossy Posted December 28, 2019 Share Posted December 28, 2019 @BlackJack do your subs have 3-pin plugs or a grounding screw? When you measured 112V AC what did you use as your reference point? Link to comment Share on other sites More sharing options...
BlackJack Posted December 28, 2019 Share Posted December 28, 2019 2 pin. no ground. multi meter at Ac Link to comment Share on other sites More sharing options...
BlackJack Posted December 28, 2019 Share Posted December 28, 2019 no ground. thus us next step. reverse live and common wires to 220 volts ac. then add earth Link to comment Share on other sites More sharing options...
Crossy Posted December 28, 2019 Share Posted December 28, 2019 12 minutes ago, BlackJack said: 2 pin. no ground. multi meter at Ac One end of the meter where? Other end of the meter where? But you certainly need to have a ground somewhere on the audio system. Link to comment Share on other sites More sharing options...
moontang Posted December 28, 2019 Share Posted December 28, 2019 My Creative speakers did not survive my ungrounded condo...put them in the rubbish, when I sold. Lots of buzzing, etc.. OTOH, I gave my brother an old pair of Creative that were ten years old in the US, and he is still using them. Link to comment Share on other sites More sharing options...
phetphet Posted December 28, 2019 Share Posted December 28, 2019 On 6/8/2011 at 9:58 AM, Crossy said: To avoid confusion (and reading a long thread):- Black - Live, Line or Hot White / Grey - Neutral Green - Ground or Earth. There is no Positive or Negative as this is an AC supply. This page is well worth a read http://www.crossy.co.uk/wiring/ Crossy. Thanks for posting that link and information. My kettle and toaster both have those Shuko plugs. Time to buy new ones I think. Link to comment Share on other sites More sharing options...
BlackJack Posted December 28, 2019 Share Posted December 28, 2019 do not rely on colors in Thailand. get a meter and check. often here they mix up the colors as they run out of cable. thus is not the UK 1 Link to comment Share on other sites More sharing options...
moontang Posted December 28, 2019 Share Posted December 28, 2019 2 hours ago, BlackJack said: do not rely on colors in Thailand. get a meter and check. often here they mix up the colors as they run out of cable. thus is not the UK The Thai man about my 30 year old condo from is bsee from KMIT... Aircon had wires reversed and no ground... was working good, when I replaced it. OTOH, my brother in law is a bsee at 3M and he would not sleep in a house with reversed, ungrounded wires. Link to comment Share on other sites More sharing options...
BlackJack Posted December 30, 2019 Share Posted December 30, 2019 seems a power line conditioner is needed audiophiles have them on their systems = takes all the bug out of the dirty AC - so i will try this = also can use a UPS with a true sine wave output also the earth = i bought cable and difficult to find somewhere to drive the copper rod into the earth as all concrete and tiles around - so trying the UPS first i shall investigate and report Link to comment Share on other sites More sharing options...
moontang Posted December 30, 2019 Share Posted December 30, 2019 36 minutes ago, BlackJack said: seems a power line conditioner is needed audiophiles have them on their systems = takes all the bug out of the dirty AC - so i will try this = also can use a UPS with a true sine wave output also the earth = i bought cable and difficult to find somewhere to drive the copper rod into the earth as all concrete and tiles around - so trying the UPS first i shall investigate and report I believe your ups needs to be grounded, too. Link to comment Share on other sites More sharing options...
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