Two Fire
Two Fire
Why do I need two phone lines for my fire alarm system?
I need two phone lines for my fire alarm system. Is this just in case one fails, the other will work? Also, can I use one of them as my personal phone line?
Excellent question, and the requirement stems from the National Fire Code (NFPA 72) which is in effect (or some form of it) in most jurisdictions across the US. The NFPA also produces the National Life Safety Code (NFPA 101), and the national Electrical Code (NFPA 70). The Life Safety Code designates what type of building need what kind of alarm, the Fire Code designates how the alarm has to operate, and the Electrical Code designates how it has to be installed (wiring, etc.).
These codes are updated every few years, so the requirements may change at some point, but for now the Fire Code calls for two independent channels of communication to the monitoring center, one channel backing up the other. What's more, the system needs to "auto-test" both of the channels on a regular basis (at least one channel every 24 hours), and report any regularities. This is normally only a requirement for commercial fire systems, so I suspect you have an office, restaurant, or store that is being protected.
As for using the phone line for your own use, you should check with your local fire marshal on the requirement in your jurisdiction. Chances are they do not want you to use that line for personal use, but it's possible they will allow it. By the way, NFPA 72 now allows for alternate mean of transmission, such as long-range radio and cellular, so it does not have to be phone lines.
 |
 Vintage FIRE KING TWO MUGS with PINK FLOWERS and D Handles Made in USA  US $107.89
|
 TWO MINT JADITE JADEITE FIRE KING SWEDISH MODERN BOWLS MINT US $99.99
|
 Vintage FIRE KING JADEITE JANE RAY Two CEREAL OATMEAL SOUP BOWLS SIX INCH 1950s US $82.99
|
 TWO 2 Jadeite FIRE KING egg cup s vtg anchor hocking jade green kitchen glass US $75.00
|
 Fire King Two Peach Lustre D Handel Mugs Mint US $72.00
|
 LOT of 6 KIMBERLY FIRE KING Mugs Anchor Hocking D Handle GREEN TWO TONE US $60.00
|
 Estate Fire King Jadite Egg Cups Two US $52.98
|
 LOT of 5 KIMBERLY FIRE KING Mugs Anchor Hocking D Handle ORANGE TWO TONE US $50.00
|
 Two Fire King Bowls in Peach Luster US $40.00
|
 LOT of 4 KIMBERLY FIRE KING Mugs Anchor Hocking D Handle BLUE TWO TONE US $40.00
|
 VINTAGE FIRE KING RED FLORAL COFFEE MUGS SET OF TWO US $39.99
|
 18 Vintage Fire King Two Tone Stackable Mugs Cups Tree Fireking 1960s 1970s US $39.99
|
 Two Vintage 1969 Fire King Meadow Green Baking Dishes 441 1 Qt 432 15 Qt US $36.95
|
 Vintage Fire King Relish Trays Set of TWO perfect condition US $34.99
|
 VTG Two Fire King Milk Glass W Gold Trim Divide Relish US $34.99
|
 Fire King Ware Peach Lustre Two Flat Soup Bowls Laurel Free Economy Shipping US $30.00
|
 Anchor Hocking Fire King Blue Carnation Two Cup Set US $30.00
|
 Fire King Two Quart Mixing Bowl Vintage Tulip Pattern US $29.95
|
 Two Fire King Gay Fad Baking Dishes Meat Loaf Cake Pan US $27.99
|
 Two Fire King Jadite Mugs Vintage C Handles US $26.00
|
 FIRE KING PEACH LUSTREWARE TWO PIECE ROASTER PAN LID 1 1 2 QT 433 USA VGUC US $25.00 |
 Two Vintage Fire King PHILBE SAPPHIRE BLUE 7 1 4 Round Replacement Lids US $25.00
|
 Pair of Anchor Hocking Fire King Peach Lustre Mugs D Handle Set of Two US $23.95
|
 Fire King Two Sierra ShapedShades of Brown Cereal Bowls US $22.50
|
 Fire King Two ESSO Tiger Dhandeled Coffee Mugs US $22.49
|
 Fire King Two 2 1 2 x 4 1 4 Ivory on White Bowls US $22.49
|
