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2.5 takes 27 amps
1.5 takes 19 amps
often circuits are protected by a 10 amp or a 6 amp MCB so realistically 2.5 is overkill
yes it is normal.
domestic PVC T+E cable isnt flexible enough for a mobile installations and will break with vibration.
even commercial/industrial single core cable , which is stranded, is too rigid so flex is the only real solution.
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Thanks pappajohn but I cant see were your coming from are you really saying that 2.5
three core flex cable is not flexible enough ? ...bearing in mind that this type of cable is dominate throughout the house/industry where appliances such as kettles, vacuum cleaners,TV, lawn mowers, saw's, lighting equipment... just to name a few
PS, I have been using my electric extension reel for over twelve years, I whine it out , whine it back isn't that flexibility...sorry perhaps you can enlighten
John is saying flat twin and earth/domestic hard wiring is not suitable. It is hard drawn solid conductors and is not made to accept vibration.
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You can buy the correct CBE sockets and frames here-
http://www.rainbowconversions.co.uk/equipment/Electrical/electrical.htm#cbeswitches
Please don't devalue your MH by fitting the incorrect domestic ones. They look awful in a motorhome!
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I'm not convinced flexible cable has any great advantage over stranded for motorhomes when most of the accessories used have terminals suitable for solid/stranded cable.
Flexible cable conductor will migrate away from the compression screw in a tunnel terminal and could lead to overheating of the accessory, so, connection units (spurs) have clamp terminals to overcome the problem.
I think the best thing to do, for wiring sockets/lighting switches in a MH, is use flexibles and tin the terminations.
I'm not convinced flexible cable has any great advantage over stranded for motorhomes when most of the accessories used have terminals suitable for solid/stranded cable.
Flexible cable conductor will migrate away from the compression screw in a tunnel terminal and could lead to overheating of the accessory, so, connection units (spurs) have clamp terminals to overcome the problem.
I think the best thing to do, for wiring sockets/lighting switches in a MH, is use flexibles and tin the terminations.
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