Electrical Safety / Inverter Failure
https://www.youtube.com/watch?v=a5MnE0q3azYThe smell of crispy electronics inside the big metal box.
A discussion on safe practises on working with mains powered devices, especially that which is part of the fixed infrastructure of your home. Safety advice, and also safety equipment and tips.
A word on tools and the value of the need for insulated tooling, especially in a circuit fed from a storage battery where the prospective short circuit current is very high, and where a metal part can get red hot within a second if it touches.
Naughty thing about the 13mm spanner he has is it is insulated with tape, it should be insulated with at least 2 layers of adhesive lined heatshrink, preferably with the inner layer being a contrasting colour, so that damage to the outer is visible before use, which will not peel as easily as the tape.
As well the issue of the right clothing was not fully considered, you need to be wearing clothing, preferably long sleeved, made only from cotton, not nylon or polycotton, as the cotton is more flash resistant, and the heavy cloth protects you from incidental contact. At least wear a coverall, so that you have good protection from injury. High energy you need the proper blast resistant clothing, with a face shield, gloves and apron, so that you will have extra protection. However, at that level, you should only be doing any work only after proper certification and training, and not working alone without any assistance close at hand.
An addition is that if you are needing to use a ladder it must be a non conductive ladder, preferably one with pultruded GRP risers, and it must be in good condition, with regular checks of condition. Not an aluminium ladder which is a good conductor, nor a wooden one with cracked risers, broken supports or rickety steps. Any faults on a ladder means it must be repaired if safe or replaced, and the old one destroyed so it can no longer be used.
I have chased contractors off site before for having unsafe ladders, they had to either come back with a serviceable one or use one I am responsible for before they could work.
