Reply by TheFridge

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Posted on 220 cord sizing

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10859 posts in 2094 days

#1 posted 07-11-2014 05:13 PM

You’re not supposed to use more than 80% of a breaker or wires capacity with cord and plug connected equipment.

You don’t even need to think about sizing wire up until you’re close to 100’.

If your equipment is pulling 20A you need to put it on a 30A breaker w #10

There are many circumstance where you can put a smaller wire on a bigger breaker, and just about all of the exceptions involve motor loads. The problem is that you can’t do it if it’s cord an plug connected. When it’s hard wired you can size the breaker up to 800% of the motor FLA and sometimes more.

It never hurts to size the wire up if it that’s what you want.

What kin of equipment are you talking about?

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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