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You should always trip the breaker |
Posted by: fredhargis - 11-24-2015, 07:36 AM - Forum: Home Improvement
- Replies (9)
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Light switches with lights inside them can also pass some small current when off (which is what lights the little indicator), so even when off, it's on. Take the bulb(s) out and no light. Which means the neutral is hot and not at zero volts when disconnected (since it's not being held to zero volts relative to earth), even with the light switch off. So yes, turn off the breaker. And check that there actually is no power before touching things.
And don't take anyone else's word for it. When I worked in demolition, a very long time ago, we started on an industrial pump building that supposedly had it's power cut at the main building. I was on a track loader, and another guy was on an excavator. When he got to the wall with the panel, sparks started shooting out. 480V 3-phase was still live in one panel.* Either one of us could have been killed. So much for facilities folks telling us the power was cut.
*Just one reason of many why the NEC only allows one feeder to an outbuilding, as a general rule.
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DVR Drill Press beta test! |
Posted by: handi - 11-23-2015, 06:24 PM - Forum: Woodworking Power Tools
- Replies (11)
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That is a pretty nice drill press. Mine is about on its last leg. Any idea when it will hit the market? I have a Nova DVR lathe and love it.
I'm surprised they let you post pictures of it. I beta test tools for Black and Decker and a few other makers and I am always sworn to secrecy about them until they hit the market.
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