Published at Tuesday, March 26th, 2019 - 00:19:50 AM. wiring. By Leola Dupond.
The next control is the pressure control. The pressure control is a switch that, when working as a high-limit safety, opens on pressure rise. The switch can be either a micro switch or a mercury switch. The pressure control is wired in series with the LWCO, the rollout switch, and the spill switch. There are a few things to remember about pressure controls. First, the cut-out pressure should never be set higher than 2 psi. This is plenty of pressure for most residential one-pipe gravity systems. Higher pressures are inviting problems.
In power engineering, a one-line diagram or single-line diagram (SLD) is a simplified notation for representing a three-phase power system. The one-line diagram has its largest application in power flow studies. Electrical elements such as circuit breakers, transformers, capacitors, bus bars, and conductors are shown by standardized schematic symbols.[
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