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Thanks for the reply.

I have been tasked with developing a "process and equipment based report on (electrostatic) precipitator for metrics" Basically, I have to pick some key process parameters of fluidized catalytic cracking and relate thier effect on opacity. Any suggestions?

Ground detection on ungrounded system. It is a critical process with no available equiped space on the main bus, which, I am told, is not really like a main bus-it is a "lattice" network. Either way, we can't take a shutdown, so I am going to have to put it on one of the branches until the next...

I have a question about high resistance ground device installation. Does the device have to be connected to the main bus, or can it be connected to a branch circuit, which in turn, is connected to the main bus? The application is for a 3Ph., 1500KVA ungrounded delta-delta feeding a 600V bus...

I have a large (over 300ft) section of 16-30" process line with failed mineral insulated electrical heat trace which lasted 20 years before failing (shorting/openiong). To save money, we obvioulsy want to find out exactly where the shorts/opens are and replace just that section, instead of...

Does anyone have any experience with splicing mineral insulated electrical heat trace? How long does a splice last before it fails? Niall

I was wondering if any of you have installed a partial discharge analysis device on any of your motors/generators or switchgear. How well has it worked?

Grat posts. Thanks

...there is an IRR function in MS Excel, that explains in simple terms what it is used for. Thanks. They are tough with handing out the cash, aren't they?! I don't blame them.

Sorry...jst thought some fellow sparky's would be involved in getting projects aproved.

I have come across an email that talks about IRR for projects. I know it is an economic term-is it "internal rate of return"?

We have a UPS system, and the batteries failed and leaked. It is outside in a temperature controled shelter unit, protecting it from water and extreme cold. It has 14 batteries inseries, each about 11 volts. It has been extremely cold lately. They are old (over 10 years). Why-typically-do...

What are unbranded petroleum products and branded petroleum products? Please give examples.

Thanks for the responses.

How does magnitization current work? I have a motor that has a magnitization current of 2.9 Amps at 460Volts.

I work for a refinery, and we are experiencing arcing in our precipitator. Aside from shutting it down, how can we reduce it?

Thanks.

Workers near a 550KV trainsmission line (installing industrial lighting) are experienceing static electricity in the form of discharge. Has anyone seen this before? What is causing it? Can it be mittigaed?

Heres what I know: 1. "Ground" is like a reference point. 2. Although I have read about it and heard about it, I still have no idea what "ungrounded" means.

What is an "MEP" firm?