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Embarrassingly, I have managed to shock myself several times during my life on 240V mains. Once quite recently while working on a light fitting at a friend's fl
by Reason077 5y ago
Embarrassingly, I have managed to shock myself several times during my life on 240V mains. Once quite recently while working on a light fitting at a friend's flat and not realising that someone had flipped the circuit back on at the circuit breaker!
That shock was certainly quite unpleasant, but despite touching my sweaty skin against live wires, it seems to have been far from fatal.
Surely the dangerous situations are live-to-earth shocks, which could potentially run across your whole body (rather than just a hand or finger, as in my case). But that's why we have RCD/GFCI protection, right? Those will trip with tiny fault currents, certainly much less than 300 mA.
Secondly, aren't "Type B" RCDs required on solar inverters? Those will detect and trip on DC fault currents as low as 30 mA, not 300!
- nielsbot 5y agoyou need "Lock Out Tag Out" lol https://en.wikipedia.org/wiki/Lockout–tagout https://en.wikipedia.org/wiki/Lockout–tagout
- quickthrowman 5y ago> Embarrassingly, I have managed to shock myself several times during my life on 240V mains. Once quite recently while working on a light fitting at a friend's flat and not realising that someone had flipped the circuit back on at the circuit breaker! Next time, I suggest using a breaker lockout [0] in conjunction with the local disconnecting means (light switch, which you can also lock out! [1]) to do it safely :) [0] https://www.walmart.com/ip/MASTER-LOCK-493B-Circuit-Breaker-Lockout-Standard-Single-and-Double-Toggles/25461421?wmlspartner=wlpa&selectedSellerId=7646 https://www.walmart.com/ip/MASTER-LOCK-493B-Circuit-Breaker-... [1] https://www.homedepot.com/p/Ideal-Wall-Switch-Lockout-44-789/100004613 https://www.homedepot.com/p/Ideal-Wall-Switch-Lockout-44-789...
- Reason077 5y ago> "light switch, which you can also lock out!" No you can't! Ceiling light fittings (in the UK, at least) are often always live regardless of the switch setting. This is because they are typically wired in a "loop" arrangement with separate loop and switch cables. Example: https://www.practicaldiy.com/electrics/lighting-wiring/light-wiring-loop.php https://www.practicaldiy.com/electrics/lighting-wiring/light...
- deleted 5y ago[deleted]
- quickthrowman 5y agoWell, the rest of the world outside of the UK, Ireland, and Hong Kong uses a safer method of electrical circuiting, one that wasn’t invented to deal with post-war material shortages.