Recent content by ladengr

Can one of you provide info on IBC 2003 fire alarm and notification requirements for a high rise motel? Smoke detectors, horn/strobes with candela values in sleeping rooms and corridors.

If so, it may make sense to go with diesel fire pump.

Thanks to DPC & RBULSARA for your valuable comments. I just want you to know that the fire pump controller has an automatic transfer switch to transfer power from utility to generator in case of power failure or generator to utility when utility power is restored. Do we meet the code, if we...

I need some one to interpret what NEC requirements are for a fire pump power connections on a primary service distribution system. This facility gets utility primary power service and the owner owns the 13.2 KV switchgear and transformer. The transformer supplies power to the building and the...

who is qualified to design fire alarm system for a facility? Do the states require the building fire alarm system is to be designed by a registered professional engineer in electrical engineering and sign the contract documents? Do the states require the fire alarm system is to be installed by...

MJCRONIN: Thanks for your valuable suggestion. I found the ITT dual drive firepump, works either with deisel engine or ac motor. LADENGR ========

Can you help me to find a fire pump manufacturer who provides a pump with two drivers on the same shaft like electric motor and diesel engine?

Section 1003.2.8.4 & 1003.2.8.5 says, Exit signs shall be internally or externally illuminated. To insure continued illumination for a duration of not less than 1 1/2 hours in case of primary power loss, the signs shall also be connected to an emergency electrical system provided from storage...

Stookeyfpe: 1. Applicable code: California Title 24 amendment to UBC section 3313. 2. Storage S-1 occupancy classification. 3. more than 100 people. 4. Single story, 45' high warehouse with 10' wide aisles, racks filled with pallet full of grocery cardboard boxes. I appreciate your help...

How do you define an exit or egress path in a large grocery warehouse with rack aisles and loading dock? The asiles are 600 feet long with cross aisles and loading dock on both ends. In California, do we need to meet UBC building code egress lighting or NFPA 101 emergency illumination in the...

Here is a calculation procedure: KVAR= KW( tan(phi1)- tan(phi2)) where KW= 59 tan(phi1)= 0.75 calculated from powerfactor =0.8 tan(phi2)= 0.33 caluclated from powerfactor = 0.9 KVAR= 59(.75-.33)=59*0.42= 21.84 USE 20KVAR capacitor. Also you need to make sure you match the capacitor size with...

Need interpretation from an electrical PE or a building inspector in Washington State for the UBC egress path illumination requirements for warehouse aisles. We have exit doors at loading docks at every 200' with exit lights above the door and adjacent ceiling mounted egress light. The egress...

What is the exit illumination requirements for an exit discharge outside the building? Do we have to provide a light above the exit door outside the building and is it connected to the emergency power generator? Please include code references.

Thanks for the response. Is the generator supply considered separately derived when we have 3 phase power supply to a motor through a 3 pole ATS without carrying a neutral to the utility main service. We have equipment ground from generator to main service through ATS.

How do you interpret the following electrical installation? 1. 2000 Amps, 480/277 Volts Main service is grounded as per NEC 250B(2). Service has a GFP. 2. Four wire Generator neutral is bonded and grounded. Generator has two CBs and rated 400 Amps and has no GFP. 3 pole and 4 pole transfer...