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Should you be concerned about Arc Blast?
Short answer yes, but how concerned? Well that’s a harder question to answer. As far as I’m aware, there hasn’t been a single arc blast fatality, regardless of the incident energy. This doesn’t mean that it isn’t a hazard but the risk associated with that hazard may be lower than you have been told. Arc […]
Connect a SEL-849 with VTScada
I’m helping a client troubleshoot an HPU motor tripping. There isn’t any monitoring of current and they are running out of ideas. I suggested we pick up a SEL-849 and tie it into the SCADA and trend the current and figure out how that works. This post is a tutorial on how to get started […]
Troubleshooting, SCADA and Energized Work
This is a great followup and use case for a home energy monitoring system, something I wrote about on the blog last week. My new ETS was broken, but how? The electric thermal storage (ETS) unit mentioned in that post stopped doing what its supposed to. When we had it installed I didn’t tie it into […]
Get out of the way when operating switches
When I am developing an Arc Flash Analysis report there are a few recommendations that always survive. They are near the top of the hierarchy of controls, and are set it and forget it type of controls. One of these is remote actuators and racking mechanisms. Both of these systems removes the electrical worker outside […]
Home Energy Management
One of the great things about volunteering with IEEE is that you get opportunities to share some of your expertise with your peers. In December a colleague and I submitted a proposal to fund an Energy Management Workshop. My System at the Office A few years ago I set up an energy management system at […]
Energized Work Permits
Let’s talk about energized work permits. I’ve seen some extremely long and detailed forms outlining what needs to be in the energized work permit that were up to 6 pages. To make things worse, they duplicate a lot of the information that would be in the work order (WO) and job specific risk analysis for […]
2020 is a big year
Last year there was a lot of change here at JMK Engineering, and we worked on some very cool projects. 2020 is shaping up to be another crazy year. I’m working on project summaries that I will be publishing in the next few weeks. Coming this year Last year I focused on electrical safety webinars […]