uHeat Banner - Forum Discount Available
This official sponsor may provide discounts for members
Advertisement - Content continues below
Advertisement - Content continues below

Discuss Lighting circuit contactor in the Electrical Forum area at ElectriciansForums.net

SparkyAndGeorge

-
Arms
Advent Win
Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:  American Electrical Advice Forum

Hi all I am replacing a contactor in a communal block of flats I believe it for the external and internal lights. Am replacing like for like but it doesnt seem right to me. Looks like its been messed about with previously? The old contactor had an a2 terminal at the bottom aswell whereas the new IMO one has an A1 and A2 at the top and bottom. There is a time clock next to it for the internal lights and a photocell out the front of the building for the external lights. Looking at the current set up this will not work as designed? Am I correct in saying the 1.0mm brown needs moving from the bottom A1 into the T1 terminal and the 1.0mm blue needs moving into the top A2 terminal? Many Thanks for any thoughts.
 

Attachments

Wetroom Store - Network Wetroom Suppliers
This official sponsor may provide discounts for members
Advertisement - Content continues below

James

-
Mentor
Arms
Supporter
Esteemed
The terminals are the same on both contactors
The smaller terminals towards the back are the relay coil. Assuming that it is a 230v coil the connections from the old one should be duplicated on the new one like for like.
 

SparkyAndGeorge

-
Arms
Advent Win
  • Thread Starter Thread Starter
  • #3
The terminals are the same on both contactors
The smaller terminals towards the back are the relay coil. Assuming that it is a 230v coil the connections from the old one should be duplicated on the new one like for like.
Thanks James but the old one did not have an A1 coil at the bottom just an A2 whereas the new one has A1 and A2 at top and bottom.
 

James

-
Mentor
Arms
Supporter
Esteemed
Thanks James but the old one did not have an A1 coil at the bottom just an A2 whereas the new one has A1 and A2 at top and bottom.
A1 and A2 are connected internally, it makes no difference if you connect it top or bottom

Edit, that’s misleading.
A1 is connected to one side of the coil,
A2 is connected to the other side of the coil
A2 is duplicated top and bottom, connected internally
A1 is often duplicated but not always
 

Pete999

-
Arms
Esteemed
Thanks James but the old one did not have an A1 coil at the bottom just an A2 whereas the new one has A1 and A2 at top and bottom.
A new configuration of the terminals, are you or have you checked to see what these terminals are connected to???? Do the instructions not tell you anything??????????
 

SparkyAndGeorge

-
Arms
Advent Win
  • Thread Starter Thread Starter
  • #6
No instructions Pete. Will have another look when I attend later and report back, thanks for the advice both.
 

SparkyAndGeorge

-
Arms
Advent Win
  • Thread Starter Thread Starter
  • #9
Supplied by others Pete and Charlie the old one was making a horrendous buzzing apparently. Think ive figured it out now just got slightly confused with the extra A2 terminal on the bottom of the contactor. Thanks for the help guys.
 
T

The Ghost

Those chattering contacts can be cleaned and re-mated to get rid of that chatter. And just a thought but if originally the lights were high load such as sodium/halide and have since been replaced by LED you could always do away with the contactor.
 
Aico 3000 Range
This official sponsor may provide discounts for members
Advertisement - Content continues below

Reply to Lighting circuit contactor in the Electrical Forum area at ElectriciansForums.net

Test Meter - Forum Sponsors since 2007!
This official sponsor may provide discounts for members
Advertisement - Content continues below
Advertisement - Content continues below

Electrical Forum

Welcome to the Electrical Forum at ElectriciansForums.net. The friendliest electrical forum online. General electrical questions and answers can be found in the electrical forum.
Advertisement - Content continues below
Top Bottom