Join us FREE, we're FREE to use
Web's largest swingers site since 2006.
Already registered?
Login here
Join us FREE, we're FREE to use
Web's largest swingers site since 2006.
Already registered?
Login here
 | Back to forum list |
| Back to Politics |
| Jump to newest |  |
| |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
"Interesting thought. Though one question. We've had postcode outages many a time in the past whilst repairs have fixed the local substation or upstream stations. Once power resumes, everything comes back on and nothing's surged to date or blown anything. Ok, so perhaps if the whole of East Anglia goes off and then resumes there would be a surge to all the distribution points, and local substations, but one assumes these have their own in-built protections to safeguard the stations themselves , and therefore the supply downstream to properties ?" The risk is always there. Most equipment has build in TRIAC or Thyristor Surge Protection. They work but have a finite lifetime. This life is shortened each time they conduct a surge down. Over time, they fail but unfortunately by going short circuit causing a pop and puff of smoke. You may have have a plug in adapter for no reason doing this and never work again. Although your kit is still working, each time, it's taken another step on its mortal coil. Most electronics have good surge protection but each time, like a cat with 9 lives, they loose a life. As you mentioned, the 'inrush current' of a reconnection of a large area would be massive and should not be ignored. ------ Thyristor surge suppressors are semiconductor chips used to protect circuits and devices from over-voltage and over-current. A thyristor surge suppressor protects electronic equipment and sensitive audio and video devices from damaging power conditions. There are many different types of a surge suppression device. Examples include a surge line protection device, a power surge protection device, and a thyristor SCR. A surge line protection device protects incoming telephone and electrical lines. A power surge protection device protects or shields electronic devices against transient voltages from sudden surges in electrical power. A thyristor SCR is a silicon controlled rectifier (SCR) used with high current or high voltage applications to control an alternating current (AC). A thyristor control can be used to protect an electrical line that is located at an electric meter or main electrical panel. Specialized thyristor surge suppressors are also commonly available. | |||
| Reply privately | Reply in forum | Reply +quote |
"------ Thyristor surge suppressors are semiconductor chips used to protect circuits and devices from over-voltage and over-current. A thyristor surge suppressor protects electronic equipment and sensitive audio and video devices from damaging power conditions. There are many different types of a surge suppression device. Examples include a surge line protection device, a power surge protection device, and a thyristor SCR. A surge line protection device protects incoming telephone and electrical lines. A power surge protection device protects or shields electronic devices against transient voltages from sudden surges in electrical power. A thyristor SCR is a silicon controlled rectifier (SCR) used with high current or high voltage applications to control an alternating current (AC). A thyristor control can be used to protect an electrical line that is located at an electric meter or main electrical panel. Specialized thyristor surge suppressors are also commonly available." Thank you and very interesting and helpful to read. Perhaps it is indeed time to look for whole house suppression/surge protection. | |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
" I live in a very rural area and I have about 15-20 power cuts a year. In the last 5 years I’ve lived here I have only had one appliance fail when the power was turned back on, I contacted the company I bought it off as it had warranty, they asked me if I had a power cut and I said yes. They blamed a surge on the power company. Western power paid for me to have a brand new appliance (Samsung American fridge freezer) after a written report from the repair agent. I genuinely think this post is scare mongering, if power cuts are large scale in the UK in coming months and peoples appliances are damaged then electricity companies will have to pay out and in my personal experience they did and with very little trouble" Theres quite a bit of scaremongering and total nonsense being posted. Keep swinging and ignore them. | |||
| Reply privately | Reply in forum | Reply +quote |
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
" I live in a very rural area and I have about 15-20 power cuts a year. In the last 5 years I’ve lived here I have only had one appliance fail when the power was turned back on, I contacted the company I bought it off as it had warranty, they asked me if I had a power cut and I said yes. They blamed a surge on the power company. Western power paid for me to have a brand new appliance (Samsung American fridge freezer) after a written report from the repair agent. I genuinely think this post is scare mongering, if power cuts are large scale in the UK in coming months and peoples appliances are damaged then electricity companies will have to pay out and in my personal experience they did and with very little trouble" UK Power Networks- Terms of Connection: If you have changed the company that supplies your electricity, your new supplier should have given you a copy of the Terms and Conditions that apply. They will have included the following terms of connection to the electricity distribution network. If you have changed supplier, the terms of connection that apply to you are very similar. Section 6 Conveying electricity We do not guarantee that we will convey electricity through our network at all times, or that electricity delivered through our network will be free of brief variations in voltage or frequency. Section 9 If something goes wrong If we fail to comply with any term of this agreement or are negligent, you may be entitled under general law to recover compensation from us for any loss you have suffered. However, we will not be required to compensate you for (and you should consider obtaining insurance against) loss caused by anything beyond our reasonable control, any indirect loss, or any direct loss or indirect economic or financial loss (including wasted expenses or any loss of revenue, profit, or interest, any loss of business, commercial, market, or economic opportunity, or any loss of contact or goodwill) other than where you are entitled to recover compensation for loss under he general law in relation to death or personal injury. | |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
"Homes rely on 230 volts of power, and therefore, the electronic devices attached to the system also require this amount. The electricity delivered by the utility company can fluctuate up to 243 volts, and appliances and electronics are built to withstand that fluctuation." All the text in that last post comes from strikecheck.com, A US site for insurance claims adjusters. I notice that you've removed their US voltages and applied EU ones instead. The UK grid supplies power at a nominal 240V, with regular fluctuations of around 5V or so. Where did you get the 243V figure from? | |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
"It's 253v max" That sounds about right. I just stuck my probes in the wall socket, and I'm seeing 245v at the moment. I'd expect most consumer equipment to be quite happy with 300v for short periods. Switched mode supplies are very forgiving of wobbly voltage levels, unlike old-fashioned transformers. Since we have very little in the way of lightning in the UK, power surges really aren't anything to worry about. | |||
| Reply privately | Reply in forum | Reply +quote |
"It's 253v max That sounds about right. I just stuck my probes in the wall socket, and I'm seeing 245v at the moment. I'd expect most consumer equipment to be quite happy with 300v for short periods. Switched mode supplies are very forgiving of wobbly voltage levels, unlike old-fashioned transformers. Since we have very little in the way of lightning in the UK, power surges really aren't anything to worry about." Most of the SMPSUs I work with are rated 85-265v Most of the "anti surge" 4 way blocks are garbage anyway, in fact there's more risk of a fire from cheap surge protectors than they're worth with any sort of load on them. | |||
| Reply privately | Reply in forum | Reply +quote |
"Homes rely on 230 volts of power, and therefore, the electronic devices attached to the system also require this amount. The electricity delivered by the utility company can fluctuate up to 243 volts, and appliances and electronics are built to withstand that fluctuation. All the text in that last post comes from strikecheck.com, A US site for insurance claims adjusters. I notice that you've removed their US voltages and applied EU ones instead. The UK grid supplies power at a nominal 240V, with regular fluctuations of around 5V or so. Where did you get the 243V figure from?" +/- 6% - are you not aware of UK spec. Mine was around 253v a few years ago, peaking over 260v, called DNO who reduced as was high and out of spec. Higher voltage also means excessive power consumption by some equipment and wasteful. We'll see, obviously you experts know better, and trying to warn others of the consequences of a large area being re-energised - carrying risk to equipment damage on any global Grid sysyem. I personally find the risk unacceptable and taken mitigation against it. Surges in the UK or US is no different other than the voltages. The UK terms are accurate as is the US information with UK voltages applied. It's however strange that wiring regs now demand whole house surge protection but I suppose that was fear mongering of manufacturers to force additional kit into rewires. It's also strange you seek to belittle and information I share with others and must be a form of entertainment. You'll not find any electronics engineer that will tell you mains borne spikes and surges are not a concern. Anyhow, crack on as you've probably damned my warning and guided others not to consider the consequences. They'll not thank you if it does prove to be correct. | |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
"https://www.bournemouthecho.co.uk/news/21108538.energy-crisis-blackout-fears-power-cut/ In a power cut, switch of any appliances, switches and sockets to help prevent a surge when electricity is restored." The actual quote from the link you provided is "Switch of all electrical appliances – this helps to prevent a surge (and therefore another power cut) when everything comes back on at the same time". That quote comes from a power company representative, who is talking about current surge. If everyone leaves everything on during a power cut, all that stuff will start to draw lots of current when the power comes back on. It might be too much current, meaning that the protection mechanisms at the sub-station will turn the power back off again to protect the supply equipment. A current surge is not the same thing as a power surge. | |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
"Whatever.." MrFunBoy. I usually find your posts quite interesting and I know you get a lot of abuse on here for scare mongering. I have always ignored it until now. I think you need to stop copying and pasting irrelevant information from USA websites. Just remember this is the politics section on a swinging forum, not a debate club forum. | |||
| Reply privately | Reply in forum | Reply +quote |
"Homes rely on 230 volts of power, and therefore, the electronic devices attached to the system also require this amount. The electricity delivered by the utility company can fluctuate up to 243 volts, and appliances and electronics are built to withstand that fluctuation. All the text in that last post comes from strikecheck.com, A US site for insurance claims adjusters. I notice that you've removed their US voltages and applied EU ones instead. The UK grid supplies power at a nominal 240V, with regular fluctuations of around 5V or so. Where did you get the 243V figure from? +/- 6% - are you not aware of UK spec. Mine was around 253v a few years ago, peaking over 260v, called DNO who reduced as was high and out of spec. Higher voltage also means excessive power consumption by some equipment and wasteful. We'll see, obviously you experts know better, and trying to warn others of the consequences of a large area being re-energised - carrying risk to equipment damage on any global Grid sysyem. I personally find the risk unacceptable and taken mitigation against it. Surges in the UK or US is no different other than the voltages. The UK terms are accurate as is the US information with UK voltages applied. It's however strange that wiring regs now demand whole house surge protection but I suppose that was fear mongering of manufacturers to force additional kit into rewires. It's also strange you seek to belittle and information I share with others and must be a form of entertainment. You'll not find any electronics engineer that will tell you mains borne spikes and surges are not a concern. Anyhow, crack on as you've probably damned my warning and guided others not to consider the consequences. They'll not thank you if it does prove to be correct." It's been a VERY long time since the UK limits were +-6% | |||
| Reply privately | Reply in forum | Reply +quote |
| |||
| Reply privately | Reply in forum | Reply +quote |
"Manufacturers usually allow a further margin of safety and, if the voltage does occasionally fall outside these limits, there should be no adverse effect on your appliances. In the UK, the declared voltage and tolerance for an electricity supply is 230 volts -6%, +10%. This gives an allowed voltage range of 216.2 volts to 253.0 volts." Ah..the correct cut and paste. Or was it changed to +-10% after I stopped working with power stations ? There was talk about it in the late 90's | |||
| Reply privately | Reply in forum | Reply +quote |
| Post new Message to Thread |
| back to top |  |
