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L PERM is the permanent live supply and must have no normal (manually operated) switch or sensor on it. However, a key-switch is permissible and will usually be installed on this circuit. L PERM has two functions: This means that the emergency light fitting works with the main lights and is connected to the other lights and is controlled with the normal lighting. When the power fails, the emergency light remains on through the battery which has been charged whilst the mains is on. It can also be turned off whilst the mains is on if it is not needed. The battery often emits around 10% of the normal light levels. Non-Maintained Emergency Lighting It supplies the power that keeps the emergency batteries charged. That’s why it must not be affected by any switching of L SW.
If everyone goes home at 5pm then perhaps start the test then, or up to 3 hours before. So you know that if there was a problem after the test no one would be in the building and the emergency lights would have a long time to recharge overnight, before people start working again in the morning. But the building is used 24/7 365 days a year! L SW is the normal mains supply. A normal light switch, or sensor, would usually be on this circuit to enable the end-user to have control over the light fitting in normal operating mode. L SW is always to be wired so that any switching of L PERM will disconnect L SW too, but any switching of L SW will not affect L PERM.
In my humble opinion the switch should be of "simulation" status IE cutting power (as it would if in a power cut, fire, etc.) and illuminating EL only. We also offer a number of additional services which are available alongside our regular monthly emergency lighting or weekly fire alarm tests. Is your building permanently used E.G. Hotels, then you need to test the lights so that the end of the test corresponds to the start of day. In this way the emergency lights will have a good time to recharge during daylight hours. Natural daylight will help if the emergency lights don’t last 3 hours. Should I test ALL emergency lights at once? The duration that emergency lighting should stay on for depends on the relevant regulations and standards, as well as the specific requirements of the building and its occupants. However, the general requirement is that emergency lighting should remain illuminated for a minimum of 1 hour, but it may need to remain illuminated for up to 3 hours in certain circumstances.
The name of the person or organization responsible for the maintenance and testing of the emergency lighting system.
How is an Emergency Lighting Test Conducted?
It can take up to 24 hours for batteries on emergency lighting systems to recharge after a full discharge test. For businesses, testing should be planned around periods of non-occupancy – like over the weekend. In full-time tenanted buildings, other strategies may be necessary to ensure that systems work around testing times. As I understand it the EL light units that (should) have LEDs on them, the LEDs are illuminated when in normal 'charging' mode but go out when in EL mode?
Sometimes there isn’t a test key switch. If not then you have to find the consumer unit and turn off the power to the whole circuit that controls the emergency lights. Hopefully it will be marked which one it is, but it could be more than one circuit. Standby lighting enables normal activities within in building to continue in the event of a mains power failure. Standby lighting is not a legal requirement but is a facility that some buildings may need depending on the use and occupancy of the premises. This depends on the size and complexity of your building and the time it would take to evacuate. The minimum duration for an emergency escape lighting system is one hour. One hour’s duration should only be used if the premises are evacuated immediately on power supply failure and it is not reoccupied until full capacity has been restored to the batteries. Details of the testing and commissioning carried out on the emergency lighting system, including dates and the results of the tests. Any other relevant information, such as details of training provided to staff on the use of the emergency lighting system.
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An emergency log book is required to keep a record of all the testing, maintenance, and servicing carried out on an emergency lighting system. It is a legal requirement to keep an emergency log book for each building that has an emergency lighting system installed. You need emergency lighting in areas that could be considered “dangerous” such as commercial kitchens or plant rooms. If your building has rooms larger than 60 square metres, then emergency lighting is recommended. How long do emergency lights need to stay on? There are three widely used ways to test emergency lighting. To understand them it is necessary to understand first how an emergency light fitting is wired. Note that the remarks that follow apply to self-contained emergency fittings, not to central battery operated emergency fittings. There are different ways to test emergency lighting in the UK, depending on the type of emergency lighting system and the requirements of the relevant regulations and standards. However, the following is a general procedure for testing emergency lighting:
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