Discuss Emergency Lighting contactor switch over in the Lighting Forum area at ElectriciansForums.net

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Hi Everyone.

Working on a self contained emergency lighting system.

There are 70 emergency lights over 3 floors.

The emergencies are wired on a separate circuit from the local lights but fed from the same DB.

I require the supply for the self contained (batt back up) lights to disconnect, when theres a disruption to the local lighting circuit.

My plan is to achieve this switch over with X 2 20A, 2 pole contactors with 240V coils (one for local lighting, one for emergency lighting)

Can I supply the contactor control circuit from the local lighting circuit, so when it trips/fails it opens my contactors & cuts power to my emergencies, bringing the batteries into action.
 
Surely the emergency lighting covers more than one general lighting circuit per floor. Swap them all for maintained.
 
Hi Everyone.

Working on a self contained emergency lighting system.

There are 70 emergency lights over 3 floors.

The emergencies are wired on a separate circuit from the local lights but fed from the same DB.

I require the supply for the self contained (batt back up) lights to disconnect, when theres a disruption to the local lighting circuit.

My plan is to achieve this switch over with X 2 20A, 2 pole contactors with 240V coils (one for local lighting, one for emergency lighting)

Can I supply the contactor control circuit from the local lighting circuit, so when it trips/fails it opens my contactors & cuts power to my emergencies, bringing the batteries into action.
Dell you could do just by adding one 2 pole relay 1- NO 1-NC contacts
 

Reply to Emergency Lighting contactor switch over in the Lighting Forum area at ElectriciansForums.net

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