Natfuelbilll said:
I'll often work energized when inserting or removing a cord cap into a receptacle - that's it.
How about you?
Above is the first post in the thread. Below I am simply repeating my sentiments from previous posts on similar topics:
My feeling from outside the 'inside wireman' industry (remember, I am an electric motor researcher, I don't deal with this stuff day after day. As far as electrical installations are concerned, I am a well informed customer) is that the problem needs to be attacked from multiple directions.
In addition to pushing against 'working hot' simply to increase profit, and in addition to pushing to have proper PPE when 'working hot' is actually necessary, there needs to be a push at the initial design and installation stage for equipment where internal guarding and protection is such that 'working hot' is no more dangerous than plugging a cord cap into a receptacle.
If a process is so gosh darned valuable that it cannot be shut down, then it should be supplied with redundant switchgear, so that you can shut down portions of the electrical system for maintenance, without shutting down the process. Working on the electrical system of a process that is not shut down does not have to mean working exposed to shock or arc hazard.
IMHO it _should_ be possible to add a breaker to an energized panel without significant exposure to shock or arc. This would require a panel where the feed is behind suitable protection, where the breaker terminals are guarded against finger contact and contact with exposed wires, where the bus is similarly guarded, and I am certain other design features. But IMHO a panel could be designed where the risk of installing a new breaker was similar to the risk of inserting a cord cap.
Such an 'internally person safe' panel would of course be more expensive. But if the justification for 'working hot' is the cost of a shutdown, then the real number for a fair comparison is not 'how much would it cost to shut this system down', but 'how much would it cost to provide a system that could be worked hot in reasonable safety.'
There will always be some risks (disconnecting the neutral on an energized circuit, for example), and some level of PPE and procedure will be necessary. But there is some risk in simply using electricity. Throwing a switch or plugging a device into a receptacle is not considered 'working hot', but there is real risk in doing so.
'Convenience' has very real value, and at some level the risk to life is low enough that convenience _should_ win out, some level of risk where the cost savings by taking the risk is worth it. The goal is to make the risk so low that even a reasonable person would say 'this is a fair trade' when it is their life on the line, and to make sure that there isn't a 'fight to the bottom' where you take excessive risks because if you don't, then 'somebody else will'.
Would you take a risk that has a 1:1000 chance of killing you to save your company $1000 in downtime? I should hope not.
How about if the risk was 1:1000000? This is a risk level similar to that of driving to work. I would perform a task that has a historic/statistical risk of 1:1000000 if it put $500 in my pocket at the end of the day.
-Jon