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How deep should outdoor electrical wire be buried?

36 inches (Title 24, Part 3, Section 3-710-88(c).) (c) Direct Buried Cables. Direct buried cables or cables in flexible nonmetallic enclosures shall be installed at a depth of at least 36 inches.

dir.ca.gov - California Code of Regulations, Title 8, Section 2830. Insulated Conductors.

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This information is provided free of charge by the Department of Industrial Relations from its web site at www.dir.ca.gov . These regulations are for the convenience of the user and no representation or warranty is made that the information is current or accurate. See full disclaimer at https://www.dir.ca.gov/od_pub/disclaimer.html

Subchapter 5. Electrical Safety Orders

Group 2. High-Voltage Electrical Safety Orders

Article 19. Outdoor Wiring (Formerly Article 68)

§2830. Insulated Conductors.

(a) General. Insulated cables shall be of a type suitable for the voltage and service conditions. All cables installed underground shall have a grounded metallic sheath, shield, or a bare concentric grounded conductor, or shall be installed in grounded metallic conduit.

(Title 24, Part 3, Section 3-710-88(a).)

(b) Cable Installed in Buildings. Where installed in buildings, cables energized above 35,000 volts shall be encased in at least 3 inches of concrete or equivalent fire-resistant material.

(Title 24, Part 3, Section 3-710-88(c).)

(c) Direct Buried Cables. Direct buried cables or cables in flexible nonmetallic enclosures shall be installed at a depth of at least 36 inches. Lesser depths shall be permitted to be employed if the cable is armored with a minimum of No. 12 BWG steel wire closely wound or two layers of steel tape each at least 0.020 inch thick, or if the cable is protected by a layer of concrete at least 3 inches thick above the cable. EXCEPTION: Lesser depths than those listed are permitted where cables rise for terminations and splices or where access is otherwise required.

(Title 24, Part 3, Section 3-710-88(c).)

(d) Identification. Cables shall be labeled at all circuit terminals, sectionalizing points, vaults, rooms, etc. The labels shall, as a minimum, show phase and circuit designation and nearest sectionalizing points.

(1) Changes in labeling shall be made concurrently with changes in circuit.

(Title 24, Part 3, Section 3-710-88(d).)

(e) Neutral Conductor. The size and insulation of neutral conductors shall be in accordance with Section 2818.

(Title 24, Part 3, Section 3-710-88(e).)

(f) Shielding. All cables normally operated above 5,000 volts shall have insulation shielding, except that shielding shall not be required for series street lighting circuits operating at less than 7,500 volts. Metallic shielding at terminations shall be effectively grounded. If shielding is sectionalized, each section shall be effectively grounded.

(Title 24, Part 3, Section 3-310-61.)

(g) Terminations. Cable terminations shall be suitable for the voltage and service conditions.

(Title 24, Part 3, Section 3-710-3(c).)

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

HISTORY

1. Editorial correction filed 11-2-83 (Register 83, No. 45).

2. Editorial correction of subsection (e) filed 11-3-83 (Register 83, No. 45).

3. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No. 1).

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What is the difference between a shed and a storage building?

Design- Storage buildings look like actual buildings where someone can have an office in if they wanted. Sheds look like they're just designed to store things. Storage buildings will usually have more windows, and a roof that looks like a real building. The doors can be very different as well.

keensbuildings.com - The Difference Between a Shed and A Storage Building

Sheds are perfect for storage, and that’s one of their main purposes. The question then might be asked, what is the difference between a storage building and a shed? A shed to a certain degree is a storage building, after all it is a building, and it does store things. There’s a very strong difference though, and it’s important to know the difference.

The Differences

Size– Sheds are usually smaller, although there are some storage buildings that are smaller than some sheds but for the most part, you can notice that storage buildings will usually be bigger. Design- Storage buildings look like actual buildings where someone can have an office in if they wanted. Sheds look like they’re just designed to store things. Storage buildings will usually have more windows, and a roof that looks like a real building. The doors can be very different as well. Purposes- Both the sheds and storage buildings do a great job storing objects. Storage buildings have more space so they can store more. Storage buildings can do many other things if you want to be creative. There are other things different about how they’re built. Each storage shed and storage building can be completely different. These differences don’t apply to all. However, you should have an idea now on the difference.

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