Recent content by westom

Electricians are not taught basic electrical concept. Only taught what must connect to what to protect human life. For a protector to be effective, it must connect low impedance (ie less than 10 feet) to earth ground. Most electricians would not know what impedance is. Since impedance is...

That is the APC protector that resulted in a 15 million unit recall. Due to at least 700 potential fires that APC knew about. Also discussed here. A surge, too tiny to overwhelm protection in attached appliances, also destroyed that tiny joule protector - catastrophically. Protector part...

Absolutely amazing how many somehow know. And (as CaseyL constantly demonstrates) cannot even post one fact or number that demonstrates any knowledge. Somehow his emotions justified by insult are proof. Because tell him that a 50% charged battery is listed a 0% on the dashboard, then he...

Many are experts without first learning how a battery really works. As indicated denials without even one fact and no relevant numbers. Denials without even one fact and no numbers identifies an expert who forgot to first learn. Facts with numbers often make the most technically naive...

Demonstrated is a mistake that layman make. Assume a linear relationship. Numbers we tell you are insufficient to know what is happening. We only tell you enough to know when a recharge is or will be necessary'. No battery drops to 0%. All batteries (when we declare them dead) are above 0%...

What is reported to you as zero is a battery maybe approaching 50%. What is reported to you as 50% maybe a battery at 75% charged. Understand how batteries work. Previous rechargeable batteries would be at maximum voltage when fully charged. Lithium does not work that way. At the battery...

American laws require battery packs to last 100,000 miles. So American EVs typically do not let their batteries drop below 50%. European EVs do not have that requirement. So European EV drivers do more miles from a recharge. Three conditions that degrade lithium batteries. Trying to charge...

Chargers must charge the battery to determine if it is at 100% or 80%. Unfortunately that 'initial charge to learn what is inside a battery' can shorten battery life. Been doing lithium batteries before a Tesla. For example, my lithium batteries in a laptop would last 10 and 13 years...

A lightning strike anywhere (even blocks away) is a direct strike incoming to all appliances. Due to a homeowner who fails to implement an inexpensive and well proven solution. Direct lightning strikes only cause damage when a homeowner fails to properly install what is required. Charging to...

Fully charge it. Then leave it unplugged. It almost never happens. But batteries tend to create fires most often when charging. If you do not have a 'whole house' protector (connected low impedance - ie less than 10 feet to single point earth ground electrodes), then lightning is all but...

Topic is clearly about "protection". Protectors and protection are two different items. pdx_m3s demonstrated how best protection is installed, Demonstrated is a well proven technology called Ufer grounding. Originally developed so that surges (including direct lightning strikes) cause no...

No theories were posted.. Any post that does not also say why is, by honest adults, always best ignored as a lie. Passion is a silly emotion. Science has no passion - only reality. Posted were facts with relevant supporting knowledge that separates reality from insidious lies. Who posted...

First learn what an effective protector does. It never tries to 'block' or 'absorb' a surge. Effective protectors are only connecting devices to what does all protection. Where are hundreds of thousands of joules harmlessly absorbed? Single point earth ground. Not any other ground. And...

Any valid recommendation always starts with what is the threat (what can cause damage). And how (and why) the effective solution works. That is introduced here: Power "Quality" Protection with Powerwall And elsewhere in that thread.

I had read previously where an owner claimed Tesla would not charge. He claimed he had a surge. Did that Tesla (or its charger) suffer from a surge? Resulting damage, defined by what was repaired, was not posted. So surge damage was only speculation. Unfortunately, many also mistakenly...