Lighting contactor wiring

[Ghost2011]

I've not had to do a contactor before and just want to check the wiring of it.
It's a 2 pole contactor with a1/a2 and 1234

Am I right in thinking that
A1 = perm live
A2= neutral
1= live to light
2= switched live
Not really sure on 3 and 4

Thanks for any advice

 

[Andy78]

How about a breaker with a more generous start current let through (efli permitting), or a current limiter ?

Inrush Limiter for LED lighting - https://uk.eaton.com/content/gb/en/products/product-catalog/lighting-controls-inrush-limiter-eaton.html

 

[Ghost2011]

I think they will need to be separated to help the reduction in inrush
Use the switched live to feed the contactor coil and one half of the lights and use a permanent live to feed the other half via the switching contacts of the contactor

This is a option to reduce the inrush

 

[Ghost2011]

How about a breaker with a more generous start current let through (efli permitting), or a current limiter ?

Inrush Limiter for LED lighting - https://uk.eaton.com/content/gb/en/products/product-catalog/lighting-controls-inrush-limiter-eaton.html

A current limiter may solve it all

 

[Jamie']

Can you not change the MCB to a type c?

 

[Ghost2011]

Can you not change the MCB to a type c?

I have already changed to a c6

 

[buzzlightyear]

I have already changed to a c6

what size of cable is being used on lighting.

 

[telectrix]

try a C10 if the Zs is low enough.

 

[Wilko]

Agree @westward10 - I don't see how a contactor helps, unless its switching 2 circuits.

 

[Ghost2011]

The cable size is 1mm t+e

 

[Pete999]

Agree @westward10 - I don't see how a contactor helps, unless its switching 2 circuits.

No nor me

 

[Ghost2011]

No nor me

I’m am at the property now and have put a c10 mcb in and all seems good have tried them over 50 times and no tripping

 

[The Ghost]

You may find your switch gets damaged over time though. As has been said a current limiter prior to the switch is the more conventional method of dealing with inrush currents. Contactors, relays and switches are all in line of the inrush and will suffer over time. I hope with the C curve MCB you have taken account of the ADS and max Zs that it meets required disconnection times? There is much evidence of fusing and meltdown of contactor, relays and switches in such circuits.

 

[buzzlightyear]

I’m am at the property now and have put a c10 mcb in and all seems good have tried them over 50 times and no tripping

 

[Pete999]

Does the Zs come within the parameters of a C10 CB?

 

[Toneyz]

try a C10 if the Zs is low enough.

Also depends upon the installation method existing.