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I have two electric panels 3000 and 4000 amps. What would be the proper Arch Flash Labeling on these panels? This is a high rise commercial building and maintenance staff does not have the authority to open these panels. Thanks.

Thanks folks.

Folks, I am trying to grab an IFC of NFPA code which outlines the application and design requirements for stairwell and lobby direction signs. Thanks

My question would involve CAT V and telephone cables. Thanks, CM

Folks, What is the NEC code for abandoned cabe in office building? Is there a NFPA code for the same? Thanks

Thank you. CMurry

Folks, I am investigating two types of products for commercial highrise buildings. 1. Coating steel beams with spray on fire retardant for small areas missing coating. 2. Filling holes in floors and walls where pipes protrude through this includes concrete and drywall. Thanks

Thank you.

Folks, Does anyone know of a NFPA or NEC code that pertains to an electric heater attached under a laminated desk? Further more a code for portable electric heaters in commercial building. Thanks

Can someone quide me to the NEC references for shunt trips concerning elevators? Thanks CM

Can someone refresh my mind with the equation to calculate Btu's to Tons CO2? Thanks CM

Thank you folks for your input. I can certainly understand why people use this posting option. CMurry

I am working with a 21 story high rise and I would like to get an idea what should my system pressure be at the pump while sitting in the off position. I have been told many conflicting answers that confused me to say the least. If my setting PSI is ? what should the standpie PSI be on the 21st...