I can tell you from experience that you really can't muck around with cheap plug packs. I had one supplied with a brand name product that nearly killed me...
I was 1mm from touching the live pins on the inside of a cheap plugpack. The casing had fallen loose, which meant it felt normal as I grabbed it, but fell to bits in my hand. At the time, I was leaning on the metal rack it was installed in, so one arm on grounded metal and the other 1mm from live 240V pins (helpfully with my thumb next to one and my finger next to the other).
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Take it seriously - it may cost your life
I can tell you from experience that you really can't muck around with cheap plug packs. I had one supplied with a brand name product that nearly killed me...
I was 1mm from touching the live pins on the inside of a cheap plugpack. The casing had fallen loose, which meant it felt normal as I grabbed it, but fell to bits in my hand. At the time, I was leaning on the metal rack it was installed in, so one arm on grounded metal and the other 1mm from live 240V pins (helpfully with my thumb next to one and my finger next to the other).