Tests ground continuity

Ground continuity. Tests the ability of the grounding system to withstand a high current (i.e., < 25 A for 10 sec) between touchable metal covers/enclo-sures/doors and the mains ground (PE). 

Just as many new personalities have come to play significant roles in the psychedelic arena in the last few decades, so have a plethora of new psychochemicals. In spite of the legal restrictions placed on their work, chemists and pharmacologists both underground and above-ground continue to synthesize and test new psychedelic compounds at the rate of perhaps dozens a year. 

A continuity test to ensure the grounding conductor is electrically continuous. 

The Britter and McQiiaid model was developed by performing a dimensional analysis and correlating existing data on dense cloud dispersion. The model is best suited for instantaneous or continuous ground-level area or volume source releases of dense gases. Atmospheric stability was found to have little effect on the results and is not a part of the model. Most of the data came from dispersion tests in remote, rural areas, on mostly flat terrain. Thus, the results would not be apphcable to urban areas or highly mountainous areas. 

Hydro projects, dams, bridges, naval equipment and any installations that aie prone to continuous shocks and vibrations also require their primary and secondary systems to have a better design and operational ability to withstand seismic effects or other ground/surface vibrations. No specific tests are presently prescribed for such applications. But response spectra can be established even for such locations and the primary and secondary systems analysed mathematically or laboratory tested. 

Someone remarked that my diodes point the wrong direction. They point in the direction I want actual current to flow, although manufacturers use a different convention which doesn t necessarily make sense. My understanding is that current flows from negative to positive (ground) and that all electricity IS negative. Just test the diodes in the direction you want continuity, before installing them in the circuit. 

Procedure Fill a %x4 incb test tube to a depth of 1 inch with the specimen ground to pass a No 16 mesh screen. Submerge the tube to a depth of 2 inches in an oil bath previously heated to 120°, place a thermometer in the EtCell and increase the bath temp at the rate of 2°C per min, while stirring the specimen by means of thermometer. At a temp approx 25° below fusion point the particles soften and tend to cohere, making it difficult to stir. Continue beating and working the mass until it fuses and becomes plastic. Read the "thermoplastic point" as the temp at which the plastic mass can be repeatedly drawn into thread by pulling the thermometer from the mass. Duplicate detns should check within 3°C... 

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