I never use it. Have you ever needed to use it?
The light switch to my lab is located two rooms away, so the sparks don't cause any kind of explosion, but other than that, no main switch.
I can't really think of any instance where you would need to shut off the power in the lab entirely. Shutting off power means you are also killing any
electrical appliance that is responsible for ventilating the lab. If anything bad happens, your first reflex should be to:
1: mop up the spill
2: vent out dangerous fumes
3: neutralize the acid/ base spill
4: put out the fire
Shutting off the power would be last on my list, unless an electrolysis experiment got out of control. This can't really happen if you're using a
power supply. If you're not using a power supply, you're just looking for trouble. |