|
Wiring
Mar 22, 2020 18:03:43 GMT
via mobile
Post by jubjub on Mar 22, 2020 18:03:43 GMT
At the risk of asking another dumb question and causing anyone any problems can anyone answer my query? Bought a new ceiling light for the cabin.it is a traditional one with a bulb and a toggle switch. The toggle switch has two connections,one black wire and one white wire.There is a single black wire to the bulb holder. Can anyone tell me how I connect to the poz/neg supply wires? Thanks to all in advance so I don't upset anyone by not thanking them if they reply......
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Mar 22, 2020 18:08:08 GMT
If it's a normal filament type lamp it makes no difference. If it's an LED then it will work one way not the other you can't damage it. Normally black wire would be negative. Not sure why you ask this sort of question at the early stages of total societal breakdown but it takes all sorts I suppose. Next time can you please ask about how to skin a squirrel. Ta.
|
|
|
Post by jubjub on Mar 22, 2020 18:37:52 GMT
If it's a normal filament type lamp it makes no difference. If it's an LED then it will work one way not the other you can't damage it. Normally black wire would be negative. Not sure why you ask this sort of question at the early stages of total societal breakdown but it takes all sorts I suppose. Next time can you please ask about how to skin a squirrel. Ta. Well first I am vegetarian so skinning animals is last on my list of survival skills. The light has an ordinary filament bulb and I need it working so I can fend off any pikey bastards who try to rob me again while I am self isolating....
|
|
Deleted
Deleted Member
Posts: 0
|
Wiring
Mar 22, 2020 18:42:51 GMT
Post by Deleted on Mar 22, 2020 18:42:51 GMT
When black and white are used together (American wiring) black is positive/hot
|
|
|
Post by patty on Mar 22, 2020 19:35:23 GMT
So reading above posts I deduce that black wire is either positive or negative.....
|
|
|
Wiring
Mar 22, 2020 19:41:29 GMT
Post by JohnV on Mar 22, 2020 19:41:29 GMT
my take is that the black wire connected to the lampholder is negative which leaves the other wire going to the switch is positive ...... screw whatever the USA standard colours are ....
You always switch the positive
|
|
|
Post by Gone on Mar 22, 2020 20:24:15 GMT
Positive supply to switch other side of switch to lamp, other side of lamp to negative.
|
|
|
Post by bodger on Mar 22, 2020 21:04:16 GMT
So reading above posts I deduce that black wire is either positive or negative..... spot on !!
............ yer takes yer choice
|
|
Deleted
Deleted Member
Posts: 0
|
Wiring
Mar 22, 2020 21:29:30 GMT
Post by Deleted on Mar 22, 2020 21:29:30 GMT
my take is that the black wire connected to the lampholder is negative which leaves the other wire going to the switch is positive ...... screw whatever the USA standard colours are .... You always switch the positive Not in a positive earth system you don't Remember them..........? There are switches on cars even now that switch -ve door switches for interior lights for one.
|
|
|
Post by JohnV on Mar 23, 2020 4:58:28 GMT
my take is that the black wire connected to the lampholder is negative which leaves the other wire going to the switch is positive ...... screw whatever the USA standard colours are .... You always switch the positive Not in a positive earth system you don't Remember them..........? There are switches on cars even now that switch -ve door switches for interior lights for one. unless you are insane you don't have a positive earth system on a boat door switches for cars nowadays operate a central control module and not a lamp directly and any way that was for a different reason ..... the switches connected directly to chassis ....... on a boat? and we can all find weird ideas that some manufacturer has used in the past (or present) for economic reasons this is someone wiring a light into a boat ........ the standard is you switch the positive .... therefore if you buy a standard incandescent fitting fitted with a switch ..... you always wire positive to the switch This is not CWDF and Gibbo having a wrangle over Peukert or Chris Pink having an argument ..... well about anything really ........ the question was about fitting a light into a boat One of the founding principles here was that technical answers should be answered as clearly and simply as possible and if the answer was there already and it was clear enough for practical purposes you left it alone. CWDF technical answers are often just a bunch of so called experts competing with one another to show off their supposed superior knowledge and the OP ends up baffled
|
|
Deleted
Deleted Member
Posts: 0
|
Wiring
Mar 23, 2020 8:31:18 GMT
via mobile
Post by Deleted on Mar 23, 2020 8:31:18 GMT
Oooooo tetchy
|
|
|
Wiring
Mar 23, 2020 8:56:50 GMT
via mobile
jubjub likes this
Post by jubjub on Mar 23, 2020 8:56:50 GMT
Not in a positive earth system you don't Remember them..........? There are switches on cars even now that switch -ve door switches for interior lights for one. unless you are insane you don't have a positive earth system on a boat door switches for cars nowadays operate a central control module and not a lamp directly and any way that was for a different reason ..... the switches connected directly to chassis ....... on a boat? and we can all find weird ideas that some manufacturer has used in the past (or present) for economic reasons this is someone wiring a light into a boat .... and the OP ends up baffled Thanks. Exactly. I have admitted that I am a numpty. I don't need/want anyone to prove that to me. All I wanted to know is which wires to connect up. To reiterate, I have a red wire + and a black wire - coming from the supply. The light has a normal bulb with one black wire attached to it.The switch is a simple toggle on/off.It has two wires on it,one black,one white. As with most things today the light was made in Taiwan. All I want to know is which wires I need to connect together to make the damn thing work. If you can help with clear instructions I would be very grateful. I have not got the time or inclination to get involved in proving points or reading waffle. So, without being rude, please just answer the question if you can for which I will be very grateful. No doubt I will still get sarkie comments For being rude. Hey ho.....
|
|
|
Wiring
Mar 23, 2020 9:17:10 GMT
Post by JohnV on Mar 23, 2020 9:17:10 GMT
there should be positions for 2 wires on the lampholder.
The bulb itself has 2 terminals if you examine it you will see that they connect to corresponding terminals on the fitting, the black wire should be connected to one of them. (call this one Black one)
The unused terminal should connect to the switch, it doesn't matter which wire on the switch, (it doesn't care) I would use the black wire (2)
the Blackwire (1) should go to the black negative supply and the white to the positive red supply
I don't think I can make it clearer than that ..... If it stilldoesn't make sense then try posting a picture of the fitting and of the switch
|
|
|
Post by Gone on Mar 23, 2020 9:31:12 GMT
As I said earlier “ Positive supply to switch other side of switch to lamp, other side of lamp to negative.”
As to wire colours, ignore them, but it is best practice to use red for the supply to the switch, then red from the switch to the light fitting then black from the light fitting back to negative. As your wires are different colours to this either change the wires, or just use a bit of coloured sleeving or insulation tape over the wire where it connects. That way the tape/sleeve will show in future which wires are live and which are negative.
|
|
|
Wiring
Mar 23, 2020 10:12:13 GMT
via mobile
Post by jubjub on Mar 23, 2020 10:12:13 GMT
there should be positions for 2 wires on the lampholder. The bulb itself has 2 terminals if you examine it you will see that they connect to corresponding terminals on the fitting, the black wire should be connected to one of them. (call this one Black one) The unused terminal should connect to the switch, it doesn't matter which wire on the switch, (it doesn't care) I would use the black wire (2) the Blackwire (1) should go to the black negative supply and the white to the positive red supply I don't think I can make it clearer than that ..... If it stilldoesn't make sense then try posting a picture of the fitting and of the switch Thanks but there is only one black wire going into the the bulb holder which has a bayonet fitting. Being a numpty I have no idea how to post pictures...
|
|