POWER-LIMITED FIRE ALARM CABLES CONTINUED Columbus OH

The following contains home security information you should know about power-limited fire alarm cables. Read on if you or a loved one is interested in home improvement and security in Columbus.

Local Companies

Shield Security Systems Inc
614-253-3319
1727 E Long St
Columbus, OH

Dictograph Security Systems
614-487-7440
1324 Dublin RD
Columbus, OH

Electrocomm - Security Division
614-257-0544
2967 Switzer Ave
Columbus, OH

Alarm One Security
614-294-2420
607 Lathrop St
Columbus, OH

Sound Investment
614-447-1222
1488 Oakland Park Ave
Columbus, OH

Mobile Sound & Wheel Inc.
614-476-4200
3893 Cleveland Ave
Columbus, OH

Signifyx Information Security
614-358-4478
2021 E Dublin Granville Rd #118
Columbus, OH

Columbus Car Audio & Accessories
614-475-6695
2975 Morse Rd
Columbus, OH

U.S. Protection Service
614-794-4950
5785 Emporium Square
Columbus, OH

A B Signal Security Systems
614-497-3332
1264 Yolanda DR
Columbus, OH

provided by:

DIGGING FOR AN ANSWER TO UNDERGROUND CABLE

Q As a follow up to last month's questions on Power-Limited Fire Alarm Cables (FPL), is there a requirement to use FPL in conduit that is installed underground from one building to another building? The Authority Having Jurisdiction (AHJ) says I always have to use "fire alarm cable."

A No. Type FPL is meant to be installed exposed in a building, and when following the rules from Article 760.15, Part B, conduit isn't necessary. To be given the FPL designation is to indicate that the conductor's insulation/jacket will be "resistant to the spread of fire," which is not a factor with buried cable.

Therefore, since FPL is not approved for "wet locations" and there is no such thing as "direct burial FPL cable," you are left with choosing one of three methods. Which method you choose will probably depend on how much you like to dig:

METHOD #1.	METHOD #2.	METHOD #3.
Use Direct Burial Cables or Conductors.	Use Nonmetallic Raceways Listed for Direct Burial Without Concrete Encasement or Other Approved Raceways.	Use Rigid Metal Conduit or Intermediate Metal Conduit.
Only copper conductors are permitted for fire alarm use (stranded or solid).	Cables and insulated conductors installed in enclosures or raceways in underground installations shall be listed for use in wet locations.	Cables and insulated conductors installed in enclosures or raceways in underground installations shall be listed for use in wet locations.
310.7 Direct burial cables or conductors. Conductors used for direct burial applications shall be of a type identified for such use.	i.e. MTW, RHW, RHW-2, TW, THW, THW-2, THHW, THHW-2, THWN, THWN-2, XHHW, XHHW-2, ZW (or Direct Burial cables).	i.e. MTW, RHW, RHW-2, TW, THW, THW-2, THHW, THHW-2, THWN, THWN-2, XHHW, XHHW-2, ZW (or Direct Burial cables).
Bury it at least 24 inches deep.	Bury it at least 18 inches deep.	Bury it at least 6 inches deep.

GREG KESSINGER, SET, CFPS, president of an alarm installing company since 1981, teaches NICET training classes to fire alarm system designers and installers and continuing education seminars for Ohio's fire alarm inspectors. You can reach him at 888-910-2272; e-mail: Greg@firealarm.org; or visit his website at www.FireAlarm.org.

author: By Greg Kessinger

Featured Local Company

Shield Security Systems Inc

614-253-3319
1727 E Long St
Columbus, OH

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