I have a elecrical design going now for class I Division installation now.
I will greatly appreciate of somenoe can direct me to a link or a manufacturer where I can get an Electrical Specification on the subject.
Thank you in advance
REVISIONS TO ELECTRICAL CODES AFTER HURRICANE KATRINA OR PSUNAMI TYPE OF OTHER NATIONAL/INTERNATIONAL FLOOD INCIDENTS
I am an Electrical Engineer currently working in Washington DC
I have been seeking answers for published Electrical Code changes or/and revisions to Electrical Code after...
This is an existing system [strip Mall] the user has roof top HVAC system and other equipment at 240V. He does not want change it more actable . This is 800 amp systems and the user wants it to be designed for four clients and meter them separately. In short the designer has no choice except to...
On customer request I have a design for 240 voltsa 1-p,3-p system 1-line with CT connection to provide power for 4 tenents.
Can some one direct me to a link for a typical 1-line to refresh my memory.
I do not do 240 vots system on regular bases.
I need to have 120 v, 240 volt 1-p and 240 v...
My actual question is that someone thinks that Ground Fault Current, Phase to Phase short and Ark Fault etc are different animals.....
I think they are same eventually when it comes to short circuit currents....they may have differnt values...but they take different routs....
What is the different between Ground Fault Current and Short Circuit Current?
I have heard someone arguing that Ground Fault Current is entirely different form Short Circuit current.
Is isn’t a Ground Fault current eventually becomes Short Circuit current to trip the nearest circuit breaker...
One of our client is interested in a experimental combined heat and power project. The primary objective of this project is to generate continuous power through micro turbines to provide enough heat to produce up to 40 tones of absorption chiller cooling. There is the potential for as much as...
I would like to know what is the Fire Rating Criteria is for 13.5 KV and above Network Transformer Vault Wall Construction in the US. If it is addressed NEC [National Electrical Code in US], I cannot find it. Any Electrical or/and Building Standard code that address matter in the US will be...
Can someone explain me as to how load flow study can be used relate a system’s economic analysis. Can Load flow study for building be used to analysis the economic of that building?.
Please explain me what is a 5-pole bus bar. This is not a familiar electrical engineering term here in the USA.
Please see attachment's. Someone is building a German Manufacturing firm here in USA. This seem like part of the specification for it.
Thank you in advance
I am looking for manufacturers on "Flat Cables" as substitute for regular electrical wiring[120/208V] for office application. Any information on this will be greatly appreciated.
FPC [Fire Pump Controller] comes as a enclosed unit with connection for normal and emergency power [ATS]. FPC is based on what ever the HP of the Fire Pump Motor so what ever OC protection inside of it is fixed per FLA of the motor.
However the main protection at the Generator[emergency]end or...
From what I understand from NEC 2002 695-4-B-1 “Over current protection devices shall be selected or set to carry indefinitely the sum of locker-rotor current of the fire pump motor and pressure maintenance and the full load current of the associated fire pump accessory equipment etc…
In...
I am in the process of designing on a rush project for the first time that has to do with connecting two 100 HP Fire Pumps to an exisitng 600 KW Generator with only around 200 amps per phase on all three phases being used to date.
This is the first time I working with Fire Pumps and I am not...
