Saw a 1930s poster warning about the dangers of electrocution and it had a red line (most probably the electricity) going from source to victim to ground. Why is that?
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Electricity follows the shortest, least resistive path to the ground. Electrical systems are bonded to ground, and then grounded, to ensure that any excessive fault current won’t destroy the systems, because that fault current is designed flow quicker to ground and minimize damage.
If you’re being electrocuted, you are unfortunately a part of that fast and easy path to ground. When you insulate yourself from the ground and work on electrical systems, you won’t be electrocuted because that grounding system is a less resistant path than you are *under normal working conditions.*
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