Under some possible failure conditions, parts of the electrical equipment may maintain a dangerous electrical charge even after the system has been disconnected from power for several minutes. If wiring is ever disconnected during operation there is an especially high risk of equipment...
"City /County Title 24, California Code of Regulations" states that "exit as defined is a continuous .... means of egress to a public way..."
"Public way as defined is any street, alley or similar parcel of land essentially unobstructed from the ground to the sky... and having a clear width of...
Article A-2-2.4.3 of NFPA 72-1999 provides the criteria for placement of heat detectors in beam pockets. Other articles specify "smoke or heat" detectors.
Is it acceptable to use the referenced article to justify installation of smoke detectors in beam pockets?
Thank you.
Rbulsara,
I understand your irony. However the removal of abandoned wiring is a very important safety issue, especially in case of fire.
In my case the modification of existing hospital requires installation of a lot of new conduits. The ceiling spaces are extremely congested and the...
Please help me to find reference in the NEC or other codes / regulations regarding removal of abandoned power wiring and conduits back to the nearest active junction box.
Thank you
farang1
Table 1, Case 8 of State of California Public Utilities Commission General Order #128 (Rules for construction of underground electric supply and communication systems") requires depth of 751-35000V supply cables and ducts to be 24" (minimum), above 35000V: 36".
Fig.1 of the referenced...
Please consider the following:
Per Article 5-10.3.5 of NFPA 101-1997 (Life Safety Code) “…the exit signs shall be illuminated by the emergency lighting facilities.”
Article 5-9.1.2 of Section 5.9 (Emergency Lighting) of NFPA 101 states that “Where emergency lighting is provided by a prime-mover...
Per IEEE Std 142-1991, Chapter 1.6.3 (Multiple Power Sourcs) the system ground may be accomplished...
1) Each source grounded, with or without impedance
2) Each system neutral connected to a common neutral bus, which is grounded,with or without impedance.
Different grounding arrangements are...
Material Safety Data Sheet (MSDS) define propane as extremely flammable liquefied petroleum gas.
Per article 500-3(a)(4) of the NEC propane is classified as Class 1, Group D.
Table 7902.3-A of 2001 California Fire Code (based on Uniform Fire Code) states that the minimum distance from outdoor...
Hello,
I have a case of eight story open parking structure next to a residential area.
The lighting fixtures adjucent to building edges are with glare guards and located not close than 14' from edges.
How to estimate glare on ground and other levels? I can obtain point to point illumination...
Please check the site:
http://www.epa.state.oh.us/derr/ersis/er/SPCC/spccfly.pdf
"...the volume of containment must be adequate to contain the volume of the largest tank plus have sufficient freeboard for a 100 year storm event. This is usually measured as 110% the volume of the largest tank."
Per article 1.2.4 of EPA-1994 Code of Federal Regulations 40, published in "Codes update for battery rooms" by the "Power Quality" few years ago "dead ends aisles longer than 6 feet are not permitted".
Is this code enforced? Are you aware of other codes/requlations which require not to have...
Does anybody has experience with 2000 kw diesel generators by Kohler? How they may be compared with Caterpillar or Cummins units of the same size in reliability and service for mission critical facilities?
Thank you,
Bob
