Nah, the other one will just make you dead.One will kill you and the other one will too.
Can you name some of these specifically? Are there any you know of that don't?Adding injury to insult, many Chinese HF All-In-One HF inverters do not isolate AC output from PV inputs. There may be AC output riding on HF inverter's PV inputs relative to AC grounded neutral. Check PV input lines to ground with AC voltmeter.
If you accidentally touch one of the PV inputs to ground while inverter is active it can blow out inverter.
This is one reason they could never be U.L. approved. They have multiple ways to kill you.
Could you elaborate on this a bit more I have an 120v AIO unit and I would like to check it for this. I have done fairly extensive testing of the ac input and outputs on mine and there’s no connection between the neutral and the ground.Adding injury to insult, many Chinese HF All-In-One HF inverters do not isolate AC output from PV inputs. There may be AC output riding on HF inverter's PV inputs relative to AC grounded neutral. Check PV input lines to ground with AC voltmeter.
If you accidentally touch one of the PV inputs to ground while inverter is active, and PV is producing power, it can blow out inverter.
This is one reason they could never be U.L. approved. They have multiple ways to kill you.
You should always have a neutral to ground connection.Could you elaborate on this a bit more I have an 120v AIO unit and I would like to check it for this. I have done fairly extensive testing of the ac input and outputs on mine and there’s no connection between the neutral and the ground.
A very interesting article.I got to thinking today about the extremely high voltage some solar arrays are running these days and wondering if the dc voltage they are producing could potentially be more dangerous than ac. So I googled it and after wading through a bunch of opinions and reasons for Certain osha standards I stumbled upon this article. https://www.electricaltechnology.org/2019/08/ac-dc-which-is-more-dangerous.html
Apparently they are both dangerous but in different ways. I found the reference to secondary injury from dc to be paticlarly interesting. What do you think about this article and safety of dc vs ac. I think understanding the dangers and the differences helps me to practice the oxymoron of being more cautious and less afraid at the same time.
Mine has no neutral to ground bond unless I am connected to shore power. No bonding in the inverter itself. My generator has no bonding either.You should always have a neutral to ground connection.
Many inverters have a relay that bonds neutral to ground inside inverter when there is no AC input applied. When there is an AC input voltage detected, the relay disconnects the neutral to ground relay connection. The responsibility of neutral-ground bonding is then turned over to the grid main breaker panel which should have a neutral-ground bonding at service entrance breaker box neutral bus bar.
This can be a problem if totally off grid and using a generator connected to AC input. If inverter disconnects its neutral-ground bonding when AC input applied then generator must be grounded and generator ground wire connected to inverter ground.
There should only be one neutral to ground bonding point. Multiple neutral-ground bonding points will create neutral current to be shared between neutral wire and ground wire. There should normally be no current flowing in the ground wire. If you have GFI breakers they will not like having current leakage to ground wire. GFI's break the circuit if hot and neutral lines do not have the same amount of current.
Adding injury to insult, many Chinese HF All-In-One HF inverters do not isolate AC output from PV inputs. There may be high voltage AC output riding on HF inverter's PV inputs relative to AC grounded neutral. Check PV input lines to ground with AC voltmeter.
Can you name some of these specifically? Are there any you know of that don't?
Typically low voltage is 1000 vac and below. Medium voltage is 1000 vac to 100,000 vac. High voltage is 100k to 345k vac . There are also Extra high voltage 345k - 765k and Ultra high voltage 745k + systems.I believe code defines high voltage as 50+ volts and I believe it does so because that's when it becomes blatantly lethal.
Cool story. Got a reference or context for that information?Typically low voltage is 1000 vac and below. Medium voltage is 1000 vac to 100,000 vac. High voltage is 100k to 345k vac . There are also Extra high voltage 345k - 765k and Ultra high voltage 745k + systems.
The context is that 50vac is not high voltage , not even close. The reference is the last 30 yrs as a working electrician.Cool story. Got a reference or context for that information?
Can we reclassify in terms of lethal voltage? Happy to soak up any knowledge you will impart.The context is that 50vac is not high voltage , not even close. The reference is the last 30 yrs as a working electrician.
you sound like an outside wireman.Typically low voltage is 1000 vac and below. Medium voltage is 1000 vac to 100,000 vac. High voltage is 100k to 345k vac . There are also Extra high voltage 345k - 765k and Ultra high voltage 745k + systems.
As an electrician myself, low voltage is considered less than 600v and high voltage is industrial above 600VTypically low voltage is 1000 vac and below. Medium voltage is 1000 vac to 100,000 vac. High voltage is 100k to 345k vac . There are also Extra high voltage 345k - 765k and Ultra high voltage 745k + systems.