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- Msha ground continuity testing - Electrician Talk
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 of resistance, and when we measure to the motor housing will will wind up with - 6 ohms We think it's because we
- Pendant Receptacle Boxes - Electrician Talk
I was approached by the company safety guy, and he informed me that "an outside source" pointed out just a regular cord drop (pendant) with just your regular 4 square metal box that has the welded pre-punched knockouts with a quad receptacle setup They stated it was "illegal" because "anyone
- Grounding motor frames. - Electrician Talk
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 normal here so Im thinking it’s just habit Obviously most motors dont come with a way to do this legit so some of it’s wonky
- Ground rod resistance - Electrician Talk
How do you measure the resistance of a ground rod and what instrument do you use?
- Unmarked cab tire caple of running 65Amps?! | Electrician Talk
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 manufactured by the ExCel cable company, which is now Essex "18" means that the cable was certified under 30 CFR, part 18 as flame resistant cable There are more markings on your cable! Keep looking!
- How to get a MSHA Certification!!! - Electrician Talk
Look up your MSHA district office and ask an inspector Mine inspectors are tough to mine violators,but good to average Joe They don't want to see any shortcuts that can cause an injury or death www MSHA gov
- Service Conductors to multiple services - Electrician Talk
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 somewhere
- Motor Higher HP Than Starter Rating - Electrician Talk
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 a size 2 NEMA starter which was labelled '40HP Tunnel Belt' The bucket didn't look like a size 3 so I
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