But if you consider the lifetime cost, and the fact that lithium batteries should (theoretically) far outlast even the best high-end AGM’s, the math starts to look compelling. Lead acid batteries can be had at almost any price – ranging from generic no-name flooded cells on up through list price name brand AGM batteries.
And because lead acid batteries are so common – it is actually possible to find decent-enough (hopefully! We know of people who have gotten essentially unused AGM batteries that were being scrapped from other projects for pennies on the dollar.
Add hidden costs such as non-productive labor, subcontracts, and other job expenses.
Modify material costs and labor based on job difficulty.
When an insulation fault occurs or a phase is accidentally earthed, the values taken by the fault currents, the touch voltages and over voltages are closely linked to the type of neutral earthing connection.
From small startups to larger companies with a network of multiple estimators. Easily apply value engineering to your electrical bid to raise or lower the cost of material and/or labor.Other than the expected “pioneers get arrows in their back” downsides of exploring any emerging new technology, the one chief downside of lithium I pointed out was the cost.There is just no ignoring that a battery bank made up of quality AGM-style lead acid batteries will cost a lot less upfront than a similarly sized lithium battery bank.In any installation, service continuity in the event of an insulation fault is also directly related to the earthing system.An unearthed neutral permits service continuity during an insulation fault.