Are you looking into Landscape lighting in Phoenix or surrounding cities? https://phoenixarizonaelectrician.com/ or yelp business page Yelp Business Arizona Electrical Solutions is a licensed Commercial and Residential electrical company that provides new installation of your landscape lighting system and repair work for your existing systems. We install only high quality light fixtures, brands such as Vista, Hadco and FX landscape lighting. These fixtures come with 5 year up to lifetime warranty on fixtures. We know your home is an investment, choosing quality lights that will last is a must. What’s more important than choosing a quality light? Installing the product properly. There are many ways this can me done incorrectly. Arizona Electrical Solutions from the beginning listens to what the customers needs are. We find out what your current landscape lighting needs are, but we also find out what your future needs might be. Installing the proper transformer and wire size is crucial to ensuring that all your lights are illuminated correctly over longer distances. Corrosion of wires is typically the cause of most failure of your landscape lighting system. Most of this could have been avoided if proper care was taken during the installation process. We directly hard wire all of our connections to the main feed wire. We completely seal our connections from the elements so they do not weather. Most of our service calls for repair work could have been avoided with a little more effort during the installation process from other contractors. Voltage drop is a huge concern for your landscape lighting. A competitive bid could leave you with an undersized transformer or undersized wire. Arizona Electrical Solutions price on fixtures cannot be beat! We offer you the consumer our contractor pricing on all fixtures and transformers when you choose us for your installation. Doesn’t matter what brand you choose! We want to be your electrician in Phoenix, Arizona!
If your looking into installing your own landscape lighting in the Phoenix, Arizona area? Here below are some electrical code guide lines to fallow if your installing any electrical wire into the ground. Here is also a link to help you calculate voltage drop! Voltage Drop Calculator
300.5 Underground Installations.
(A) Minimum Cover Requirements. Direct-buried cable or conduit or other raceways shall be installed to meet the minimum cover requirements of Table 300.5.| | Table 300.5 Minimum Cover Requirements, 0 to 1000 Volts, Nominal, Burial in Millimeters (Inches) |
| Type of Wiring Method or Circuit |
| | Location of Wiring Method or Circuit | Column 1
Direct Burial Cables or Conductors | Column 2
Rigid Metal Conduit or Intermediate Metal Conduit | Column 3
Nonmetallic Raceways Listed for Direct Burial Without Concrete Encasement or Other Approved Raceways | Column 4
Residential Branch Circuits Rated 120 Volts or Less with GFCI Protection and Maximum Overcurrent Protection of 20 Amperes | Column 5
Circuits for Control of Irrigation and LandscapeLightingLimited to Not More Than 30 Volts and Installed with Type UF or in Other Identified Cable or Raceway |
| | mm | in. | mm | in. | mm | in. | mm | in. | mm | in. |
| | All locations not specified below | 600 | 24 | 150 | 6 | 450 | 18 | 300 | 12 | 150 | 6 |
| | In trench below 50 mm (2 in.) thick concrete or equivalent | 450 | 18 | 150 | 6 | 300 | 12 | 150 | 6 | 150 | 6 |
| | Under a building | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| | | (in raceway or Type MC or Type MI cable identified for direct burial) | | | | | (in raceway or Type MC or Type MI cable identified for direct burial) | (in raceway or Type MC or Type MI cable identified for direct burial) |
| | Under minimum of 102 mm (4 in.) thick concrete exterior slab with no vehicular traffic and the slab extending not less than 152 mm (6 in.) beyond the underground installation | 450 | 18 | 100 | 4 | 100 | 4 | 150 | 6 | 150 | 6 |
| | (direct burial) | (direct burial) |
| | 100 | 4 | 100 | 4 |
| | (in raceway) | (in raceway) |
| | Under streets, highways, roads, alleys, driveways, and parking lots | 600 | 24 | 600 | 24 | 600 | 24 | 600 | 24 | 600 | 24 |
| | One- and two-family dwelling driveways and outdoor parking areas, and used only for dwelling-related purposes | 450 | 18 | 450 | 18 | 450 | 18 | 300 | 12 | 450 | 18 |
| | In or under airport runways, including adjacent areas where trespassing prohibited | 450 | 18 | 450 | 18 | 450 | 18 | 450 | 18 | 450 | 18 |
1. Cover is defined as the shortest distance in millimeters (inches) measured between a point on the top surface of any direct-buried conductor, cable, conduit, or other raceway and the top surface of finished grade, concrete, or similar cover.
2. Raceways approved for burial only where concrete encased shall require concrete envelope not less than 50 mm (2 in.) thick.
3. Lesser depths shall be permitted where cables and conductors rise for terminations or splices or where access is otherwise required.
4. Where one of the wiring method types listed in Columns 1 through 3 is used for one of the circuit types in Columns 4 and 5, the shallowest depth of burial shall be permitted.
5. Where solid rock prevents compliance with the cover depths specified in this table, the wiring shall be installed in metal or nonmetallic raceway permitted for direct burial. The raceways shall be covered by a minimum of 50 mm (2 in.) of concrete extending down to rock.
(B) Wet Locations. The interior of enclosures or raceways installed underground shall be considered to be a wet location. Insulated conductors and cables installed in these enclosures or raceways in underground installations shall comply with
310.10(C). Any connections or splices in an underground installation shall be approved for wet locations.
(C) Underground Cables and Conductors Under Buildings. Underground cable and conductorsinstalled under a building shall be in a raceway.
Exception No. 1: Type MI cable shall be permitted under a building without installation in a raceway where embedded in concrete, fill, or other masonry in accordance with
332.10(6) or in underground runs where suitably protected against physical damage and corrosive conditions in accordance with
332.10(10).
Exception No. 2: Type MC cable listed for direct burial or concrete encasement shall be permitted under a building without installation in a raceway in accordance with
330.10(A)(5) and in wet locations in accordance with
330.10(A)(11).
(D) Protection from Damage. Direct-buried conductors and cables shall be protected from damage in accordance with
300.5(D)(1) through (D)(4).
(1) Emerging from Grade. Direct-buried conductors and cables emerging from grade and specified in columns 1 and 4 of
Table 300.5 shall be protected by enclosures or raceways extending from the minimum cover distance below grade required by
300.5(A) to a point at least 2.5 m (8 ft) above finished grade. In no case shall the protection be required to exceed 450 mm (18 in.) below finished grade.
(2) Conductors Entering Buildings. Conductors entering a building shall be protected to the point of entrance.
(3) Service Conductors. Underground service conductors that are not encased in concrete and that are buried 450 mm (18 in.) or more below grade shall have their location identified by a warning ribbon that is placed in the trench at least 300 mm (12 in.) above the underground installation.
(4) Enclosure or Raceway Damage. Where the enclosure or raceway is subject to physical damage, the conductors shall be installed in rigid metal conduit, intermediate metal conduit, RTRC-XW,Schedule 80 PVC conduit, or equivalent.
(E) Splices and Taps. Direct-buried conductors or cables shall be permitted to be spliced or tapped without the use of splice boxes. The splices or taps shall be made in accordance with
110.14(B).
(F) Backfill. Backfill that contains large rocks, paving materials, cinders, large or sharply angular substances, or corrosive material shall not be placed in an excavation where materials may damage raceways, cables, or other substructures or prevent adequate compaction of fill or contribute to corrosion of raceways, cables, or other substructures.
Where necessary to prevent physical damage to the raceway or cable, protection shall be provided in the form of granular or selected material, suitable running boards, suitable sleeves, or other approved means.
(G) Raceway Seals. Conduits or raceways through which moisture may contact live parts shall be sealed or plugged at either or both ends.
Informational Note: Presence of hazardous gases or vapors may also necessitate sealing of underground conduits or raceways entering buildings.
(H) Bushing. A bushing, or terminal fitting, with an integral bushed opening shall be used at the end of a conduit or other raceway that terminates underground where the conductors or cables emerge as a direct burial wiring method. A seal incorporating the physical protection characteristics of a bushing shall be permitted to be used in lieu of a bushing.
(I) Conductors of the Same Circuit. All conductors of the same circuit and, where used, the grounded conductor and all equipment grounding conductors shall be installed in the same raceway or cable or shall be installed in close proximity in the same trench.
Exception No. 1: Conductors shall be permitted to be installed in parallel in raceways, multiconductor cables, or direct-buried single conductor cables. Each raceway or multiconductor cable shall contain all conductors of the same circuit, including equipment grounding conductors. Each direct-buried single conductor cable shall be located in close proximity in the trench to the other single conductor cables in the same parallel set of conductors in the circuit, including equipment grounding conductors.
Exception No. 2: Isolated phase, polarity, grounded conductor, and equipment grounding and bonding conductor installations shall be permitted in nonmetallic raceways or cables with a nonmetallic covering or nonmagnetic sheath in close proximity where conductors are paralleled as permitted in
310.10(H), and where the conditions of
300.20(B) are met.
(J) Earth Movement. Where direct-buried conductors, raceways, or cables are subject to movement by settlement or frost, direct-buried conductors, raceways, or cables shall be arranged so as to prevent damage to the enclosed conductors or to equipment connected to the raceways.
Informational Note: This section recognizes “S” loops in underground direct burial to raceway transitions, expansion fittings in raceway risers to fixed equipment, and, generally, the provision of flexible connections to equipment subject to settlement or frost heaves.
(K) Directional Boring. Cables or raceways installed using directional boring equipment shall be approved for the purpose.
