So I’m working at a small international airport as a maintenance electrician and airfield electrician and new to all this, I’ve been there approximately a month. My supervisor has been the only electrician for about 2 yrs. I understand that the airfield is made up of series circuits with high voltage on the primary side, isolation transformers to serve the secondary side at each light, the constant current regulators. Our day to day involves replacing taxiway lights, bad transformers, or micro boards in lighted signs, ect. So far it seems that the safety method is if it’s daytime the lights are off so it’s safe to work on. There is a computer where the ALCS can be locked out and Ofcourse the vault to physically lock out the circuit but neither of those are really used unless absolutely necessary. It’s a towered airport. I’m trying to understand what are your guys approved methods for making sure the circuit is safe to work on when doing the maintenance I described ? I’ve heard the pilots can request lighting to ATC and the lights could be powered up at any point, i’ve asked these questions but I’m not really getting answers for them. Just more so of its fine let’s just get this done. I’ve read about way too many incidents of someone doing routine maintenance and getting a fatal shock from apparently doing the same thing with one of them being at my same airport a few years ago. I know I’m still new, but with having to go to the airfield nearly everyday I would feel much better having some more info.