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Nightcrawler® Nightcrawler® is offline
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Default 220V dryer sparked on startup (3 wire) What to test?


wrote in message news
On Sat, 16 Nov 2013 11:35:17 -0500, wrote:


snip


It's also connected to the ground bus inside the box, not the neutral
bus. Uninsulated, too.


Not always. Older, or cheap, load centers used to do this, but the
newer panels give a dedicated ground bus with a tapping screw to the
panel case and an isolated grounded conductor bus.

In some instances, in meter-main/load center combos, the tapping
screw may be allowed as the point at which the grounded conductor
obtains its bond to ground, but it is preferred to do this in the
meter section of all installations so that there is no messing things
up via some moron coming in at a later time and thinking that it
is all the same...

Why I hated residential work...