A reading of 145 volts is high. The first thing that I would check is the accuracy of your meter. Check the voltage reading at different locations for example, friends homes, to see if the reading is still high there. If it is check your meter reading against another meter. If you are sure that your meter and reading is correct then call the utility company and get them to check the voltage for you.
You would have to run new wires to obtain 240 volts or use a step-up transformer.
Because it is a 220 volt outlet instead of a 120 volt outlet. Now, if this is a standard 120 volt outlet that is reading 209 volts then someone has made a mistake in the wiring. You need to call an electrician to straighten this out.
A 210-volt outlet is not a standard voltage for residential use in most regions. Typical household outlets are either 120 volts or 240 volts. It is possible that a 210-volt outlet may be used in certain commercial or industrial settings for specific equipment or machinery that requires this voltage level. It is essential to consult with a licensed electrician before attempting to use or modify any electrical outlet.
A 30 amp circuit on a 250 volt service could handle up to 7500 watts. That's if it's actually 250 volts coming in. You should check that with your meter.
I have never seen a 100 Volt rated outlet. Usually outlets would be rated for 110 to 120 volts for residential use, or maybe 150 volts. The rating is separate from what voltage the outlet is providing. If your outlet is supplying 100 volts, as measured by an accurate voltmeter, you have some problem in your wiring or a faulty outlet. If there is only 100 volts at the outlet get an electrician to diagnose the problem if you are not completely familiar with home wiring. In general you should never use an outlet that has a voltage or current rating less that the device will consume.
12.6 volts as read with a digital DC volt meter.
14 volts
All voltage reading are usually read with a volt meter. This volt meter can be a hand held unit like electricians use.
It is a 12 volt battery. Fully charged it will read 12.6 volts with a digital volt meter.
A fully charged 12 volt battery will output 12.6 volts are read with a digital volt meter.
A fully charged 12 volt automobile battery will read 12.6 volts with a digital volt meter. It will read 12.4 at 75% charge, 12.2 volts at 50% charge and 12 volts at 25% charge.
Volts
A device that measures volts.
Fully charged it should read 12.6 volts with a digital volt meter. 12.4 = 75% charge, 12.2 = 50%, 12.0 = 25%.
You would have to run new wires to obtain 240 volts or use a step-up transformer.
A volt meter or a multimeter on the voltage scale.
With engine not running it should read 12.6 volts if it is fully charged. You will need a digital volt meter to check it.