Lighting circuit

[Iona222]

Trying to fix my mates lights. Keeps tripping I thinking the connecter block can't handle the Amps cause its 3 circuits going to it.

Am I right. What size of connecter block should I use.

 

[Dustydazzler]

Unlikely to be the 'size' of the connector block

More likely a poor connection or wrong connection

 

[DPG]

Trying to fix my mates lights. Keeps tripping I thinking the connecter block can't handle the Amps cause its 3 circuits going to it.

Am I right. What size of connecter block should I use.

Have you got a photo? The rating of the connector block should be at least the current that will be flowing through it with load switched on.

To be honest, if it is under rated enough to cause a problem I would expect some visible damage, melting etc.

 

[DPG]

Dusty bet me to it. By seconds!

 

[newfutile]

It’s more likely all the same colours have been connected together (not realising 1 cable goes to the switch), bit of a guess but I’m sure all of us here have seen this diy mistake so many times

 

[Iona222]

It’s more likely all the same colours have been connected together (not realising 1 cable goes to the switch), bit of a guess but I’m sure all of us here have seen this diy mistake so many times

Thanks for all the reply, I think 1 of the neutral connection was on the wrong neutral bar.

 

[newfutile]

Be careful! that neutral could be a switch live ,there is usually a neutral “bar” ,a permanent live “bar” and a switch live “bar”, switch live should be sleeved with red or brown sleeve but often is not.

 

[Iona222]

Be careful! that neutral could be a switch live ,there is usually a neutral “bar” ,a permanent live “bar” and a switch live “bar”, switch live should be sleeved with red or brown sleeve but often is not.

Ye, I don't understand. The neutral was the problem mate. What should I have done. When I put them all together they tripped.

 

[littlespark]

Problems like this, we need as much detail as possible. (photos help immensely) ie. what part of the circuit were you working on? OP doesn't mention. The light, the switch, the board or some hidden joint box?

 

[Iona222]

Problems like this, we need as much detail as possible. (photos help immensely) ie. what part of the circuit were you working on? OP doesn't mention. The light, the switch, the board or some hidden joint box?

I was changing the light.

 

[DPG]

I was changing the light.

Sounds like you assumed the switched live was a neutral and connected it to the neutral of the supply. Which would definitely trip the MCB!

 

[timhoward]

Don't know if this helps the OP at all. Note the highlighted switch wire joins the middle live terminal to the light. It should be marked with brown sleeving/tape (or red if old colours). Many out there aren't marked and you have to learn to work out which one it is.

 

[Iona222]

Sounds like you assumed the switched live was a neutral and connected it to the neutral of the supply. Which would definitely trip the MCB!

exactly, i think your right bud, should I have put this in with the lives? Its wasn't a rosie it was led light.

 

[Iona222]

Sounds like you assumed the switched live was a neutral and connected it to the neutral of the supply. Which wou

 

[DPG]

exactly, i think your right bud, should I have put this in with the lives? Its wasn't a rosie it was led light.

Makes no difference, rose or light fitting. A switched live cannot connect to a neutral.

See the diagram someone posted above for how lighting circuits are wired. This will answer your question of where the switched live goes.