"During troubleshooting, the installer first disconnects the solar panel leads, then uses the Fluke meter to measure the panel's DC voltage to ensure it's equal to the panel’s nameplate open circuit voltage," said Robert. "Next, our installer uses the 376-clamp ammeter function to make...
Ground resistance testing methods are usually the following: two-line method, three-line method, four-line method, single-clamp method and double-clamp method. Each has its own characteristics. In an actual test, we have to choose the correct testing method to make the test results accurate. ...
Oxygen will bubble freely from the ingot, and hydrogen from the piece of lead. Blackening will be noted on the edges of the ingot, where the current is most intense, and a lighter discoloration on the flat face of the ingot. This pre-treatment is called anodizing. It has been found that...