EA should adopt part of the US Model. We define things that can kill in the broad sense. You need a PE to do that work in my state.
My former employer designated me, a non-degreed engineer, as a "Senior Field Engineer" on the business card. I got used to visiting Federal labs, and when asked a question outside of my scope, I simply said, "I'm not a PE in the State of XXXX and I cannot answer that question", Company Happy, Engineering Society happy, Customer happy most of the time. The company assumes the risk if I did work a PE should have done, and also I acquire part of the risk, and could be fined/charged if something went wrong. It is legal to do that here in most states. END OF PROBLEM.
Can I design a man rated structure or a life support device. Nope. Can I suggest a design, yes. Can I build one and test it as a technologist Oh Yes, . Can I improve it prior to submission, Oh Yes.. Can I advise a PE about my opinion, yes. I did that often as a PE was my former supervisor. Once in a while He'd say something along the line of "justify It, Prove It, show me the math", so off to the library I go.
Round here an Engineering Professor teaching in certain lines of work is granted an assumed PE status automatically for certain things while teaching. They also are honorary shop teachers.

Usually I'd get good treatment if I went on site, and explained, I'm designated as an Engineer in my title, but really I'm a well experienced technician. Often I had a better interaction with scientists, facilities folks, health and safety, and regulatory then the full bred degreed engineers.
Yet another employer once ordered me, when I trained medical service Biomeds on CT systems, that if a surgeon or radiologist declared an emergency, and I was on site, but an Engineer was not, to bring up the imaging system under repair to save a life if possible. Use my best judgment on the calibration parameters, and hand the system over to the Radiologist. Scary, but who would want some one to bleed out, compared to a possible mild X-ray overdose. The senior guy teaching the course muttered something along the lines of "Turn on the breakers, turn the key, input the password, select the procedure, click the mouse, and press the button if you need to." That made me shudder. The threshold was "Auto Accident, Bleed-out, or Something Equally Serious" and don't expect Good Samaritan laws to apply.
In my present work,
I've tagged out a system on a Engineer with a Degree (PhD) who made some design and procedural errors. He laughed about it later, after things were corrected. . That is my veto power as a Senior Technician. I had better damn well be right before I do it. Facility staff tell me my dividing line where what I do stops is anything inside or on mounted the wall. Even then they will ask me what I want and have observed.
How you codify that is difficult, but it does work. I know better then to repair the elevators. I don't touch drinking water or power distribution, and I sure as heck do not repair the building stairs. For Biomed, I only work on research devices that do not support pets or humans, and are approved by the investigational committee. No Avionics, unless it goes on an experimental aircraft and is signed off by a designated examiner.
If I think I'm working on something I need inspected, I pick up the phone at work and call. A PE pops in and has me explain what I have done,, and show my drawings. It is simple, and it works. I can even set the test for the CET, I'm grandfathered in due to my age.
"Safety of Life" is the dividing line for me.
Steve