What's your mains voltage ?

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IslandPink
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#1 What's your mains voltage ?

Post by IslandPink »

I'm trying to be crafty with my new tweeter amp and build the filament supplies ( especially the DHT one ) with just enough reserve voltage in for typical UK operation, in the places I am likely to take the amp.
I'm interested to know what AC people have in their locations.
( I expect Ali Tait can tell me a lot more ! )

Anyway , if you have time and a reliable multi-meter, let me know what you find.

So far, I can say mine was 248V last time I tested it - and has always been around 247 or 248 as far as I can recall.
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#2 Re: What's your mains voltage ?

Post by Ant »

Tested it last week after my site tranny packed in, I got 247v on the primary side
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ed
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#3 Re: What's your mains voltage ?

Post by ed »

mine varies between 242 and 255v.

I did a long thread back in the day because it was causing me grief as the bias for my F6 followed the mains voltage and made life very trixy. Since our street had a new main installed there are times when the voltage goes outside the acceptable limits.

right at this moment it's 253.4v
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IslandPink
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#4 Re: What's your mains voltage ?

Post by IslandPink »

Ah yes I remember about that (now).
Thanks

Keep 'em coming !

I was thinking of allowing min 240V for my amp to work outside of North Wales, Nick suggested 220-255V ( I think his tongue was slightly in his CE cheek ) but I'm keen to see if anyone has less than 240.
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Greg
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#5 Re: What's your mains voltage ?

Post by Greg »

242Vac to 245vac here.
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Ali Tait
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#6 Re: What's your mains voltage ?

Post by Ali Tait »

Don’t have a meter here, but in Dunfermline it was a pretty steady 240-245.
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IslandPink
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#7 Re: What's your mains voltage ?

Post by IslandPink »

Come on Kent Massive , the votes must be in by now ?
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andrew Ivimey
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#8 Re: What's your mains voltage ?

Post by andrew Ivimey »

Cool I running at 235 volts in the Shore of Beds...
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andrew Ivimey
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#9 Re: What's your mains voltage ?

Post by andrew Ivimey »

Oh for fuck's sake...spell check my were...The SHIRE.
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IslandPink
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#10 Re: What's your mains voltage ?

Post by IslandPink »

I like it though - a premonition of sea-level rise !
Also the first entry at under 240V.
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thomas
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#11 Re: What's your mains voltage ?

Post by thomas »

Kent calling......

It's usually about 248vac here, but I've just measured it now at 250vac....and 24mvdc across it too....
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shane
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#12 Re: What's your mains voltage ?

Post by shane »

Down in deepest Devon, generally around 247V.
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#13 Re: What's your mains voltage ?

Post by Dave the bass »

237V AC at 9.00AM here in East Dartford.
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izzy wizzy
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#14 Re: What's your mains voltage ?

Post by izzy wizzy »

242V at lunch time on the Kent coast

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#15 Re: What's your mains voltage ?

Post by jack »

My APC SmartUPS in the shack logs the mains voltage. I've posted graphs from it before - it has hit 250V....

Theory is that being out in the countryside means that they have long crappy cables (ours is an old 3-phase 100A SWA cable with oiled paper insulation!)

As they have to deliver 230VAC to whoever is at the end of the supply, the tap the substation for a higher voltage...

Which is why I use a decent UPS to supply stable, predictable, 230VAC to critical kit - make a real difference to the HT on amps etc.
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