Off Grid Solar Power Simplified: The Complete Guide to Install a Mobile Solar Power System in Boats, RVS, Vans And Tiny Homes by Michael R. Jacobs
Author:Michael R. Jacobs [Jacobs, Michael R.]
Language: eng
Format: azw3
Publisher: Ozair_solutions at Fiverr
Published: 2020-08-07T16:00:00+00:00
Multi-wire Link Connection
Most stand-alone PV systems use inverters with 120 Vac output, the hot leg being attached to both sides (phases) of a typical 120/240 V split-phase load core. Usually for 240 V operating, the current in one phase is 180 degrees as opposed to the current in the other direction which results in neutral conductor currents equal to the disparity of the two phase currents.
Once the two phases (buses) in the panel are coupled together to transmit the 120 V source, the currents on the two sides of the panel are now in contact with each other and additive. When multiwire branch circuits which share a neutral conductor for two branch circuits are attached to this modified control panel, the neutral conductor can potentially become overloaded and cause a fire hazard. A special warning sign on the panel shall be provided for these installations to preclude the attachment of multi-wire circuits.
The OSHA specifications for battery installs shall include the following:
•
Unsealed batteries must be installed in ventilated enclosures to avoid fumes, gases, or electrolytes from entering other areas and to prevent the accumulation of explosive mixtures.
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