Just a point of clarification since this can be a danger to installers. Chris Mason correctly pointed out that "arc-flash" and "arc-fault" are different and my post may not have made this clear. However, he stated that "arc-flash" requires at least 480 volts which I strongly disagree. I had an arc-flash inside a Kohler 240 VAC transfer switch happen when I started to remove the cover and a small metal shaving fell down across the buss bars inside. The explosion bowed out the cover and the sound was like a shotgun. I then went through some arc-flash training by the military before inspecting several hundred electrical panels on a military base and was told this can happen at much lower voltages than the generally accepted 480 volts.
To all, regardless of high voltage AC or DC, arc-faults and arc-flash are still not generally understood by some electricians working on these higher voltage systems and there are safety equipment made to protect hands and faces which can receive some really bad burns. Please review proper safety procedures for working on this equipment. Jeff yago
_______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
