testing and fault finding on emergency lighting circuits

[BENN-SPARK]

Good afternoon to anyone seeing this, I've attached a file to this to ask if someone could explain or describe the job / operation of the item pictured. ?

Also so I just have one more question which is the following, when flip testing emergency lighting circuits how can you tell when the fitting doesn't operate whether the problem is the fitting or just a bulb gone ? I have been checking the green LED indicators and have been going by the thought that if the LED's are not operating the fitting is faulty ??

I welcome all help, many thanks benn .

 

[Darkwood]

Welcome to the forum Benn

 

[Leesparkykent]

That is a contactor. A contactor is basically an electrically controlled switch. Contactors come in many forms with varying features and capacities.

 

[GMES]

Hi Benn and welcome along.

 

[telectrix]

That is a contactor. A contactor is basically an electrically controlled switch. Contactors come in many forms with varying features and capacities.[/QUOT




that is messy contactor wiring.

 

[telectrix]

your 2nd question........ if the LED is not lit, then first check the supply to the fitting.

 

[tazz]

I presume one test switch is operating all em lighting circuits via the contactor. This is quite common on commercial or warehouse units. Saves having to hunt for all the em switches.
When testing em lights, only the power to the em circuit should be shut down, and the normal lighting should be left on. This allows you to see the normal lighting and the em lighting at only 60% its normal brightness. Any light not lite is of course faulty.
Best practice is to number every em light fitting, this helps with testing and repair.

 

[BENN-SPARK]

Thank you to everyone for your replies and expertise in my question... its helped a bunch, if I have anymore questions I'll be back, . Thanks again benn

 

[BENN-SPARK]

I presume one test switch is operating all em lighting circuits via the contactor. This is quite common on commercial or warehouse units. Saves having to hunt for all the em switches.
When testing em lights, only the power to the em circuit should be shut down, and the normal lighting should be left on. This allows you to see the normal lighting and the em lighting at only 60% its normal brightness. Any light not lite is of course faulty.
Best practice is to number every em light fitting, this helps with testing and repair.

thank you, I'll be sure to take you advice.

 

[BENN-SPARK]

Thanks it's nice to be able to voice to people that can and are willing to explain/help