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<blockquote data-quote="Frank Koenig" data-source="post: 91315" data-attributes="member: 416">Re: Article on generators in FOH, what info do you want to read?I&#039;ll contribute my little hack for estimating voltage drops in your head or with just a pocket calculator (US-centric, I know).You only need to remember that 10 gauge (AWG) copper is approximately 1 Ohm per 1000 ft. Easy to remember -- all ones and zeros. The cross-sectional area doubles or halves every three gauge numbers, and so does the resistance, so there you go. For aluminum, add two gauge numbers and you&#039;re pretty close. Don&#039;t forget to figure both out and back (double the cable length).This is useful for estimating loss and damping factor in speaker cables, too.The above is true at 25 deg. C. NEC uses 75 deg. C, where the resistance is a bit higher. Connectors and circuit breakers add a bit of resistance, too.&nbsp;--Frank</blockquote>

[QUOTE="Frank Koenig, post: 91315, member: 416"] Re: Article on generators in FOH, what info do you want to read? I'll contribute my little hack for estimating voltage drops in your head or with just a pocket calculator (US-centric, I know). You only need to remember that 10 gauge (AWG) copper is approximately 1 Ohm per 1000 ft. Easy to remember -- all ones and zeros. The cross-sectional area doubles or halves every three gauge numbers, and so does the resistance, so there you go. For aluminum, add two gauge numbers and you're pretty close. Don't forget to figure both out and back (double the cable length). This is useful for estimating loss and damping factor in speaker cables, too. The above is true at 25 deg. C. NEC uses 75 deg. C, where the resistance is a bit higher. Connectors and circuit breakers add a bit of resistance, too. --Frank [/QUOTE]

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