Cherry2000
Your advice help me tremendously. Thanks so much.
It's an Ethanol Plant and Client wants NFPA, I've looked in NEC and it's Class 1 Div. 2 Group D.
I'll use the point method of classification as you had mentioned.
Please send me the PPT Presentation.
I am a recent graduate and was asked to develope an area classification drawing for a grass-root refinery project. This is a first time for me. Any directions/suggestions or name of books to read would be greatly appreciated.
DPC
Thanks so much for the prompt response. I am using a Potter Brumfield relay with coil voltage 24VDC and current requirements is 1A. What is the allowable voltage drop for a control circuit? I know typically we use 3% - 5% as acceptable.
Hello all
I am trying to determine which wire size to use to energize a control relay, below is the parameters:
Voltage Source: 24VDC
Length in 1 way: 500FT
What is the allowable voltage drop for 24VDC? and also what size of wire can I use for that length of a distance.
Thanks for your help.
Thank you so much DPC & EEJAMIE for your advise. The project is an existing petrochemical plant. What type of occupancy classification is it or where do I look it up? Sorry but I am inexperienced with Building Code.
Thanks again.
I am working on an expansion project for an existing site which does not have an Emergency System. I raised the concern several time to our clients about adding in an Egress Lighting system at the minimum. Their reaction is "If power is out, power is out". I am searching in the NFPA Life...
