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Hot water heating takes about six panels of energy a day, and air conditioning can take about 12 panels a day, so if just those can be run from PV alone and without the batteries, that will extend the life of the batteries by at least 50 percent or more and probably reduce the battery bank size by 30 percent. The Sol-Ark system will also account for and adjust to the degradation of battery health over time.

WA’s regional utility Western Power has moved forward with off or edge-of-grid solar and storage deployment in WA.

The nodes PV+ and PV- of figure 1 are physically large in a typical PV system. The average voltage on each node, relative to ground, is half of the voltage from the PV cells, but upon this is added an AC voltage whose peak-peak value is similar to that of the cells. In the event of a person touching the PV+ or PV- nodes (or, in general, any node on the DC side of the inverter), a leakage current will flow out of the system through the person to ground.

“I think the real story here is that inverters are doing a lot more than they ever have,” said Jeremy Niles, marketing manager at Pika Energy.

We also have Fluke 437 Series II 400 Hz Power Quality Monitor for Avionic and Military applications. Fluke 437 Series II is the must-have 400 Hz Power Quality Analyzer which is specifically designed for capturing power quality measurements in 400HAz system commonly found in GPU for Aircrafts, Shipboard Power Supply System and Defense applications. The shipboard power measurement system analyzes according to MIL-STD 1399 to automatically give a full evaluation of voltage, current and power according to the standard.

Whether you live in a 60-square foot flat or in a sprawling five-bedroom bungalow, the expo – which hosted more than 70 local and foreign companies – has something for you depending on your budget. 

Smart loads. This is a programmable load that’s not based on time but rather the batteries’ state of charge or how much PV power is being produced. Brennan explains: “We can turn on A/C or the hot water heater at 100 percent battery and solar is producing 2,000 W during the 9 a.m. to 3 p.m. time range when I’m producing excess solar. And if the solar stops producing [or batteries get to 95 percent], they shut off automatically. It’s perfect for on-grid time of use and off grid for preserving battery life.

More than 250 fifth-12th grade students in schools from 15 counties in Northwest Arkansas will compete Monday, March 4, in the Northwest Arkansas Regional Science and Engineering Fair.

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Top most power analyzer: LMG671. Dual path path feature with accuracy as high as 0.015%. Right power channel for your measurement (A/B/C channels).

Like most current-gen wireless chargers, the iOttie iON wireless charging stand delivers up to 10W of power for Samsung flagships. This charger comes with 2 coils, allowing you to place the phone in the landscape or portrait orientation. It also comes with a status indicator to let you know if the phone is properly charging or not. The stand is wrapped in a soft fabric and a variety of color options ensures that it won’t clash with the decor of the room. The iOttie iON wireless charging stand is priced at $44.95.