Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 73 replies
  • Subscribers 32 subscribers
  • Views 4917 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

The Arc Fault Detection Device… again.

whjohnson
Some humourous but valid observations on AFDDs, the state of the industry, the wiring regs and future amendment requirements.

He also attempts to build a AFFD tester which electrically tests rather than relying upon the mechanical action of the test button on the device itself.

https://www.youtube.com/watch?v=e0ElFaKc_e8

Parents
  • 0
    wallywombat:

    Does anyone know whether there's a simple relationship between current and power emitted by an arc? I don't know what the effective resistance of a plasma's arc is, but perhaps at below about 2.5A not enough heat can be generated at the site to ignite anything?


    I have been thinking about that. I have also been thinking about the spark which ignites a cigarette lighter. Surely it must depend upon the presence (or absence) of any fuel and the temperature attained. (Fire tringle - fuel, oxygen, heat.) That's why I come back to the PVC choc-block. If it melts, then ADS should take over. If it doesn't melt, how can it get hot enough to ignite?


Reply
  • 0
    wallywombat:

    Does anyone know whether there's a simple relationship between current and power emitted by an arc? I don't know what the effective resistance of a plasma's arc is, but perhaps at below about 2.5A not enough heat can be generated at the site to ignite anything?


    I have been thinking about that. I have also been thinking about the spark which ignites a cigarette lighter. Surely it must depend upon the presence (or absence) of any fuel and the temperature attained. (Fire tringle - fuel, oxygen, heat.) That's why I come back to the PVC choc-block. If it melts, then ADS should take over. If it doesn't melt, how can it get hot enough to ignite?


Children
No Data

Community Rules & Guidelines