Construction
Conductor:
THHN: stranded, uncoated copper conductors per ASTM-B3, ASTM-B787
and ASTM-B8
• MTW: bare, annealed copper per ASTM-B3, -B8 and -B787
Insulation:
Color coded polyvinyl chloride (PVC), heat, moisture and flame retardant compound
per UL 83 and UL 1063.
Covering:
A tough abrasion resistant polyamide (Nylon) covering.
Specifications
THHN / THWN-2 or MTW meets or exceeds all applicable ASTM specifications
UL 83: Thermoplastic-Insulated Wires and Cables
UL 1063: Machine-Tool Wires and Cables (stranded cables only)
NEMA WC70 / ICEA S-95-658: Power Cables Rated 2000V or Less for the Distribution of Electrical Energy
Federal Specification A-A-59544 and requirements of the NEC
CSA C22.2 No. 75-03Â Thermoplastic Insulated Wires and Cables
Ratings
VW-1 rated 14 AWG - 1 AWG
1/0 AWG and larger is rated for CT (cable tray) use.
6 AWG and larger is rated for sunlight resistance in all colors. All sizes are rated "gasoline and oil resistant II."
Â
Construction
Conductor:
THHN: stranded, uncoated copper conductors per ASTM-B3, ASTM-B787
and ASTM-B8
• MTW: bare, annealed copper per ASTM-B3, -B8 and -B787
Insulation:
Color coded polyvinyl chloride (PVC), heat, moisture and flame retardant compound
per UL 83 and UL 1063.
Covering:
A tough abrasion resistant polyamide (Nylon) covering.
Specifications
THHN / THWN-2 or MTW meets or exceeds all applicable ASTM specifications
UL 83: Thermoplastic-Insulated Wires and Cables
UL 1063: Machine-Tool Wires and Cables (stranded cables only)
NEMA WC70 / ICEA S-95-658: Power Cables Rated 2000V or Less for the Distribution of Electrical Energy
Federal Specification A-A-59544 and requirements of the NEC
CSA C22.2 No. 75-03Â Thermoplastic Insulated Wires and Cables
Ratings
VW-1 rated 14 AWG - 1 AWG
1/0 AWG and larger is rated for CT (cable tray) use.
6 AWG and larger is rated for sunlight resistance in all colors. All sizes are rated "gasoline and oil resistant II."
Â
Line array sound is a speaker system, and its technology and manufacturing have been developing steadily for many years. Recently, the situation has changed, and linear array speaker systems have appeared at many major sports events and large performances in the world.Linear array is a group of radiating elements arranged in a straight line and closely spaced, and has the same amplitude and phase. Through linear transmission, the transmission distance is increased and the attenuation during sound transmission is reduced.The advantages of linear array sound reinforcement systems are obvious.
(1) Due to the characteristics of the linear array, the directivity in the vertical plane of the main axis is a narrow beam, and the energy superposition can be radiated at a long distance. The lower end of the curved part of the linear column covers the near area, forming a coverage from near to far.(2) The improvement of the linear array amplifier is more in line with the requirements of technology, process and installation. The middle high-frequency part is more special, 2 (JBL) or 3 (V) tweeter outlets are connected together fJ2j, JBL company called it a sound wave generator, E-V company called it a plane wave generator. According to the analysis with MAPP software, the directivity of the linear array becomes more and more uniform with the increase of frequency. When a certain frequency is reached, such as 1000Hz, the directivity is radial, that is, the flap appears in the directivity map. At this time, the acoustic waveformer composed of the tweeter comes into play, so that the high-frequency directivity is superimposed. (3) Linear arrays cannot ignore mutual interference, and linear arrays themselves do not improve sound quality.
Our company's line array products not only have high quality and competitive prices, is a Chinese supplier trusted by buyers all over the world market, choose us and you have chosen a bright and brilliant future
Line Array,J8 Line Array,Portable Line Array System,Line Array Speakers,Linear Array Speaker Systems
NINGBO LOUD&CLEAR ELECTRONICS CO.,LIMITED , https://www.loudclearaudio.com