Feb 8, 2014 · Anybody have experience with doing ground testing for msha? We are running into a problem when we measure the circuit ohms. We start out with a 500' spool of wire and have .7 ohms …

Apr 21, 2024 · I used to do Msha testing so am familiar. Vfd cables have a great ground internally though. We, the installer, are adding all these motor frame jumpers. I was told by fellow workers it’s …

Aug 3, 2023 · Interesting MSHA has no authority over the buildings here is the kicker not in the mine. That was OSHA. Ended up in HR again over that one. Fortunately the mine manager agreed with me …

Sep 1, 2010 · How do you measure the resistance of a ground rod and what instrument do you use?

Nov 10, 2010 · Okay. "MSHA" is Mine Safety and Health Administration "P" means that it meets the additional requirements of the state of Pennsylvania Bureau of Mines "159" means that it was …

Nov 27, 2024 · For insance MSHA says that any abandoned wiring must be REMOVED. I can't tell you how many industrial plants or even residential areas where you see old dangling wiring hanging out …

Sep 13, 2024 · I need a little help with defining a dead front for an electrical panel. The code states to protect from all exposed live parts. Does this include wires and the sides of the breakers? With …

Feb 1, 2025 · That's an MSHA (mining version of OSHA) requirement at least for underground and coal mining. Often surface metal-nonmetal works the exact same way because they buy equipment from …

Jan 21, 2022 · Of those the true mining cables seem to work the best or SOOW because the jacket is molded to it so that it tends to move with the wiring and you get no rubbing. At one mine around here …

Jan 19, 2017 · I'm doing the MSHA required ground continuity test at a local rock crushing plant, likely more than 100 motors from 2 - 400HP. My connection to the ground bus at the MCC was right below …