Securing bx cable

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tmygldn

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What are the rules when running BX Cable with regard to securing the cable along the path of travel from J-Box to J-Box or recepticle to recepticle ??

Does the cable have to be secured to each stud (I'm using metal studs) and is it supposed to be secured within 6" of the box ?
 
tmygldn said:
What are the rules when running BX Cable with regard to securing the cable along the path of travel from J-Box to J-Box or recepticle to recepticle ??

Does the cable have to be secured to each stud (I'm using metal studs) and is it supposed to be secured within 6" of the box ?
Click to expand...

Welcome to the forum.

Assuming BX is FMC:

348.30 Securing and Supporting. FMC shall be securely
fastened in place and supported in accordance with
348.30(A) and (B).

(A) Securely Fastened. FMC shall be securely fastened in
place by an approved means within 300 mm (12 in.) of
each box, cabinet, conduit body, or other conduit termination
and shall be supported and secured at intervals not to
exceed 1.4 m (41⁄2 ft).

(B) Supports. Horizontal runs of FMC supported by openings
through framing members at intervals not greater than
1.4 m (41⁄2 ft) and securely fastened within 300 mm (12 in.)
of termination points shall be permitted.
 
320.30 Securing and Supporting.
(A) General. Type AC cable shall be supported and secured by staples, cable ties, straps, hangers, or similar fittings, designed and installed so as not to damage the cable.
(B) Securing. Unless otherwise provided, Type AC cable shall be secured within 300 mm (12 in.) of every outlet box, junction box, cabinet, or fitting and at intervals not exceeding 1.4 m (4? ft) where installed on or across framing members.
(C) Supporting. Unless otherwise provided, Type AC cable shall be supported at intervals not exceeding 1.4 m (4? ft).
Horizontal runs of Type AC cable installed in wooden or metal framing members or similar supporting means shall be considered supported where such support does not exceed 1.4-m (4?-ft) intervals.
 
augie47 said:
320.30 Securing and Supporting.
(A) General. Type AC cable shall be supported and secured by staples, cable ties, straps, hangers, or similar fittings, designed and installed so as not to damage the cable.
(B) Securing. Unless otherwise provided, Type AC cable shall be secured within 300 mm (12 in.) of every outlet box, junction box, cabinet, or fitting and at intervals not exceeding 1.4 m (4? ft) where installed on or across framing members.
(C) Supporting. Unless otherwise provided, Type AC cable shall be supported at intervals not exceeding 1.4 m (4? ft).
Horizontal runs of Type AC cable installed in wooden or metal framing members or similar supporting means shall be considered supported where such support does not exceed 1.4-m (4?-ft) intervals.
Click to expand...

BX is AC cable? Phooey.

What the heck is Greenfield then?
 
tmygldn said:
What are the rules when running BX Cable with regard to securing the cable along the path of travel from J-Box to J-Box or recepticle to recepticle ??

Does the cable have to be secured to each stud (I'm using metal studs) and is it supposed to be secured within 6" of the box ?
Click to expand...

jumper said:
Welcome to the forum.

Assuming BX is FMC:

348.30 Securing and Supporting. FMC shall be securely
fastened in place and supported in accordance with
348.30(A) and (B).

(A) Securely Fastened. FMC shall be securely fastened in
place by an approved means within 300 mm (12 in.) of
each box, cabinet, conduit body, or other conduit termination
and shall be supported and secured at intervals not to
exceed 1.4 m (41⁄2 ft).

(B) Supports. Horizontal runs of FMC supported by openings
through framing members at intervals not greater than
1.4 m (41⁄2 ft) and securely fastened within 300 mm (12 in.)
of termination points shall be permitted.
Click to expand...
ARTICLE 320 Page 70-175 2008 NEC Armored Cable :Type AC /Better known as BX. SEE 320.30 (A) (B) (C)( D)
Also see article 330 page 70-182 for type MC also called BX around here any way.
Look at your cable to see what type it is AC nec 320 or MC NEC 330
the support rules are different between the two types of cable
 
jumper said:
BX is AC cable? Phooey.

What the heck is Greenfield then?
Click to expand...

ARTICLE 348 FLEXIBLE METAL CONDUIT:FMC
348.2Definition.page 70-194
Flexible metal Conduit (FMC) A raceway of cirular cross section made of helicallty wound, formed, interlocked metal strip.
 
tmygldn said:
Does the cable have to be secured to each stud (I'm using metal studs) No

and is it supposed to be secured within 6" of the box ? No, 12"
Click to expand...


Do you mean AC able or MC cable?

One other notable fact it does not require protection when installed less that 1.25" from the front edge of a metal stud when running through the holes.
 
Yes, BX is AC, which, along with MC, is a cable type, as it comes with conductors installed.

Greenfield is FMC, which is a flexible raceway, in which we install conductors in the field.
 
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