This GPT-M series copper wire has a black PVC outer cover for insulation and is suitable for use in marine propulsion and automotive wiring applications. The PVC (polyvinyl chloride) insulation has an operating temperature range of -40 to +105 degrees C. This stranded copper wire is annealed for improved ductility and meets the SAE J378 standards for electrical wiring in marine propulsion systems and SAE J1128 standards for electrical wiring in surface vehicles. This copper wire is suitable for use at up to 50VDC as primary wiring for boats and 60VDC for trucks, buses, tractors, and trailers.
Electrical wire carries an electric current or grounds an electrical device. The amount of current a wire can carry is proportional to its size (gauge), and the wire is generally sheathed with coatings and coverings to insulate and protect it from moisture, chemicals, heat, and abrasion. Copper is the primary material for electrical wire, but alloys are sometimes used to increase its strength or its resistance to chemicals and the environment. Wire can be composed of a single strand or of many smaller strands, depending on its use, and is typically annealed to improve its ductility. Electrical wire is commonly used in industrial, electronic, and automotive applications.
In 1982, after graduating with distinction from the Masonry Program of Williamson Trade School, our founder, Andy deGruchy, began practicing his trade. It did not take him long to notice that the Portland Cement-based mortars and other inferior lime products sold in the US and being used to repair historic masonry structures were consistently failing.
Repairs using inferior materials often failed prematurely resulting in work needing to be redone in as little as 10 years. Even if a repair lasted longer, it fell far short of the 100+ -year service life attained from properly installed lime mortars which were historically used worldwide.
A return to traditional materials with a proven track record of service was needed.
After research and networking with other conservators and conservation institutes, Andy was introduced to the Saint-Astier® Company of Perigueux, France. For 170 years, Saint-Astier® has not deviated from their time-honored methods of preparing lime. To this day, their commitment to traditional methodology continues to produce dependable building limes for various types of construction and historic masonry repairs. The iconic nature of Europe’s lasting historic architecture inspired Andy to bring the same great performing materials to the US.
Wanting to use the best and most appropriate materials available, Andy’s company, deGruchy Masonry Restoration, began using Saint-Astier® Natural Hydraulic Lime (NHL) for their restoration projects. This lime, with its unique chemistry, was procured in three strength grades known as NHL 2, NHL 3.5, and NHL 5. Soon after, to meet the need and demand to further serve and supply the entire masonry industry with these world-class materials, LimeWorks.us was born.
LimeWorks.us launched in 1999 and joined with deGruchy Masonry Restoration to bring their exceptional know-how and understanding of lime-based materials and their effective applications to the restoration and sustainable building community.
Today, Andy deGruchy’s work of almost 40 years, including that of LimeWorks.us, is respected in the Americas as the authority on lime mortars, plasters, mineral paints, historic masonry restoration, and construction using “green” earth-conscious materials.
If you are a Professional Masonry Restoration Artisan or a Sustainable Builder, LimeWorks.us can teach you how the right lime-based materials coupled with proper installation methods will bring you ideal end results and more qualified work opportunities.