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120v vs 240v

Doing a electric panel upgrade and thinking of running 3 new dedicated 8 gauge circuits, 2 for possible future 240 v  ( which can also be 120v) monoblocks and a dedicated 20 amp for other gear
What are the pros and cons of 240v  vs 120 v for amplifiers

also how many isolated ground circuits do I need?

 Thanks 
digitaljoseph
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cleeds
5,957 posts
 
ditusa
CLEEDS the the plug that is needed is a leviton 5842-i i have 2 in my home in stall by a electrician 125v 20amps top bottom 250v 20amps ...
That’s fine, but the circuit you described was 30A for both the 120VAC and 240VAC lines. That Leviton receptacle definitely doesn’t meet my local code for that purpose and I don’t think it meets NEC, either.
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ditusa
1,887 posts
 
cleeds my bad your right my mistake they have 20amp breakers 10/3 wire is 30 amp i have 10/3 wire 
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jtgofish
515 posts
 
240 Volts!Thin end of the wedge there.Next thing you know you will want us to give up our military style weapons and left handed fishing reels!
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