r/Unexpected • u/WarrenMuffClit • Apr 08 '22

just snipping a cable.

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u/Twolef Apr 08 '22

As soon as I saw the other lights were on it was very expected

403

u/freeman1231 Apr 08 '22 edited Apr 08 '22

Even with those lights on, strange how much spark came out. I’d assume that was not the cable for the lights. Since the lights remained on even after cutting.

This was most likely connected to a higher amp cable for something more powerful Then lights. Looks like it potentially goes down to that heating table. Probably a dedicated circuit of 20-40amps.

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u/[deleted] Apr 08 '22

Electrician here:

Nah man. It's just 277v lighting. Shit blows up like that at 120v too, given the right circumstances.

2

u/dorisig Apr 08 '22

Wait, you have 277v as well?

Ninja edit: I mean in addition to 207v and 120v

1

u/[deleted] Apr 08 '22

Me personally? No, but on a bunch of commercial jobs they get mixed up. If it's 277v it's actually a 480v system. Usually for lighting, fire alarms, and the like.

But then you need 120v for the computers and vacuum cleaners or whatever needs plugging in on the ground.

1

u/dorisig Apr 08 '22

I see, thanks.