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ED1782R6 — February 2019 — For latest specs visit www.legrand.us/wiremold
2
WIREMOLD
®
Outdoor Ground Box
Installation Considerations
Determine location to install the Ground Box:
• The location must be in a well drained area, away from inlets and outfalls.
• Do not install Box at low points or in areas prone to accumulate standing water.
• Do not install Box in locations where it will be subject to deliberate vehicular traffic.
– Box is rated for occasional non-deliberate vehicular traffic with a maximum 5,000 lb (22.2 kN) design load (ANSI/SCTE 77 Tier 5).
• Box should only be installed in locations where the grade is within 1% of level.
• Box should be installed in sidewalks only where the grade is less than 2% in all directions.
• Box installation in locations where the seasonally high water table is less than 3 feet (600mm) below finished grade is not
recommended.
• Consultation of a licensed professional engineer knowledgeable of local soils is recommended to determine if unsuitable or poor
soils may be encountered at the intended Box location.
• Do not install Box on unsuitable soils.
– Unsuitable soils are those with unsatisfactory drainage characteristics and high volume change potential.
Unsuitable soils are defined herein as USCS soil groups OL, OH, and PT (organic silts, organic clays, and peat).
• Installation of Box on poor soils is not recommended without additional drainage improvements. A method for improving drainage
and minimizing the potential for heave in frost-susceptible and other poor soils is presented in the product installation instructions.
– Poor soils are those with poor drainage characteristics.
– For warm and cold climates, poor soils are defined herein as USCS soil groups ML, MH, CL, and CH (inorganic
silts and inorganic clays). Additionally, for cold climates poor soils include USCS soil groups GC and SC (clayey
gravels and clayey sands).
– Poor soils are not a concern for un-irrigated locations where the average annual precipitation is less than 30 inches (762mm).
• Do not install Box in permafrost areas.
• Box should not be installed in locations where bedrock is less than 3 feet (600mm) below finished grade.
Glossary of Terms:
USCS Unified Soil Classification System
OL Organic silts and organic silty clays of low plasticity
OH Organic clays of medium to high plasticity, organic silts
PT Peat and other highly organic silts
ML Inorganic silts and very fine sands, rock flour, clayey
silts or fine sands with slight plasticity
MH Inorganic silts, micaceous or diatomaceous fine sandy
or silty soils, elastic silts
CL Inorganic clays of low to medium plasticity, gravely
clays, sandy clays, silty clays, lean clays
CH Inorganic clays of high plasticity, fat clays
GC Clayey gravels, gravel-sand-clay mixtures
SC Clayey sands, sand-clay mixtures
Environmental Code Ratings
Type 6P Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to
hazardous parts to provide a degree of protection against ingress of solid foreign objects (falling dirt); to provide a degree
of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, hose directed
water, and the entry of water during prolonged submersion at a limited depth); that provides an increased level of protection
against corrosion; and that will be undamaged by the external formation of ice on the enclosure.
Type 4X Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to
hazardous parts; to provide a degree of protection against ingress of solid foreign objects (falling dirt and windblown dust);
to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet,
snow, splashing water, and hose-directed water); that provides an increased level of protection against corrosion; and that
will be undamaged by the external formation of ice on the enclosure.
The IP Code is an International Protection Marking per IEC standard 60529.
IP 68 Enclosure is dust tight. No ingress of dust; complete protection against contact. Enclosure is protected in immersion
beyond 1 meter. The equipment is suitable for continuous immersion in water under conditions which shall be specified
by the manufacturer. Normally, this will mean that the equipment is hermetically sealed. However, with certain types of
equipment, it can mean that water can enter but only in such a manner that it produces no harmful effects.
IP 65 Enclosure is dust tight. No ingress of dust; complete protection against contact. Enclosure is protected
from water jets. Water projected by a nozzle (6.3mm) against enclosure from any direction shall have no harmful effects.