You asked: How closely spaced must supports be for Romex in a roof cavity?

Article 336-18 stated that cable must be secured in place at intervals not exceeding 4.5 feet (1.37 m) and within 12 inches (305 mm) from every cabinet, box, or fitting.

How often does Romex need to be supported?

Runs of NM cable must be supported at least every 54 inches. They also must be secured within 12 inches of an electrical box that includes a cable clamp or within eight inches of a box or enclosure without a cable clamp. Keep in mind that “support” does not always mean fastening the cable to framing.

What is the maximum distance between supports for NM cable?

NM-cable must be secured and supported every 4.5-feet (1.4-meters) by staples, listed cable ties, straps, hangers or similar fittings, or other similar fittings that are designed and installed so that they do not damage the cable.

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Can you staple Romex to rafters?

Cable run parallel to rafters or joists must be stapled at approved lengths and kept back from the edges of a joist or rafter by 1 1/4″ or nailing plates will need to protect the cable. You cannot run cable over the top of joists or fastened to the bottom of rafters.

How far from an electrical enclosure must a non metallic cable be strapped?

The general rule for NM cable is to secure the cable within 12 inches of the box and every 4.5 feet thereafter.

Can you staple Romex to bottom of joists?

It is okay to staple Romex along the floor joists, provided you keep it at a safe distance from the edge. This will help you protect it from screws and nails and any critters that may be crawling along the edges – since that is where insects usually decide to burrow. You can also run Romex THORUGH floor joists.

Can Romex be run exposed?

No. Romex is not allowed to run exposed in any situation. In a dry, exposed area, you can use MC cable and metal boxes.

Can you strip Romex and run in conduit?

Contrary to popular belief, you can run Romex in conduit as long as the conduit is sized properly. However, there’s usually no good reason to do so – if you’re going to use conduit, use individual THHN/THWN wire.

Are two NM Cables allowed to be supported under 1 staple?

You are allowed to put 2 lines under 1 staple. The conductors can cross the gas line or run next to it but not secured to the gas line.

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What are 3 acceptable ways to support cable runs?

Typical cable-support systems include cable trays, ladder racks, enclosed wire pathways, clamps, rings, and fasteners.

Can you run Romex on top of ceiling joists?

Yes, unless its in an inaccessible place. Cable run across the top of joists If the attic is accessible by permanent stairs or ladder, any cable running across the top of joists will have to be protected. …

Can Romex touch insulation?

Yes you can touch it, no you don’t need to turn the power off. Obviously if the sheathing is damaged and the insulation around the wires is damaged as well…then you might not want to touch it.

Does wiring have to be stapled?

Attaching Cables to Studding

In the codebook, section 334.30 states that flat cables must be stapled on the flat side of the cable, not on the edge. This provides a tight wire connection to the stud and prevents any damage to the wire sheathing.

How far back from the front edge of a stud is required for non metallic sheathed cable?

Holes shall be bored so that the edge of the hole is not less than 1-1/4 inches from the nearest edge of the wood member. If you can’t maintain this distance you must protect the cable with a steel plate at least 1/16 inch thick.

What is the maximum distance of conduit support or strap after a junction box?

Shall be secured and fastened within 3 feet of a box, conduit body, or other point of termination and within every 10 feet thereafter.

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What is the maximum distance between two supports when non metallic sheathed cable is run between boxes?

Article 336-18 stated that cable must be secured in place at intervals not exceeding 4.5 feet (1.37 m) and within 12 inches (305 mm) from every cabinet, box, or fitting.

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