Discuss What reference method in the The Welcome Forum area at ElectriciansForums.net
In new builds they dot an dab allI'd call it clipped direct as long as the dot'n'dab muck wasn't slapped over the cables. There's going to be plenty of space behind the plasterboard for heat dissipation
102 sounds closest I suppose, maybe we've just given them an excuse for 18th Ed ammendment 1[/QUOTE
ye which is why it's confusing as I know company's doing same job some put a some put b some put c and I wanted to know an the nic won't say ---- allSee table 4A2 appendix 4 bs 7671 numbers 57 and 58.
If there is no thermal insulation in the walls , then it's not reference method 102 or 103.
Reference methods 100-103 are for cables in or under insulation in ceilings or walls only.
Heat will dissipate through the masonry clipped direct. the reference methods are all about how the heat generated from a cable can escape to determine the cables ccc.I'm fairly new to the game so would like some insight into how to handle a scenario like this. Do we follow BS7671 religiously (that there is no insulation like Ian pointed out), or do we account for the fact that drywall adhesive ( I'm guessing now), does not have the same insulation qualities as free-flowing air? Your comments would be appreciated as I have often erred on the side of caution and wondered whether I made the right choice.
Also think of cables chased in a wall covered with pvc capping and then plastered over.I'm fairly new to the game so would like some insight into how to handle a scenario like this. Do we follow BS7671 religiously (that there is no insulation like Ian pointed out), or do we account for the fact that drywall adhesive ( I'm guessing now), does not have the same insulation qualities as free-flowing air? Your comments would be appreciated as I have often erred on the side of caution and wondered whether I made the right choice.
In some aspects they make up their own version of the regs (my bold). In my opinion, if all else fails use common sense.Also think of cables chased in a wall covered with pvc capping and then plastered over.
It's reference method c as heat can escape through the masonry wall as one side isn't capped over.
Niceic like to sit on the fence in my experience
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