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Discuss builders supply- amendment 3 in the Electrical Forum area at ElectriciansForums.net

J.C.E

Electrician's Arms
afternoon

first time since amendment 3 came out that I have had to install a TT system

I need to install site temps on a plot of land ready for new build flats.

UKPN will be installing a new PME temp supply

Am I right in thinking I am ok to take my tails through a nylon Wiska tail gland- through a amendment 3 board using a clamp. with a 100ma timed delay main switch.

then 30ma RCBO any of the circuits out of here that need them. think they are getting site cabins with pre wired boards in them anyway.

Cheers
 

J.C.E

Electrician's Arms
Are the sub mains in swa? The site cabins will probably be 30mA rcd main switch is all.
the subs will likely be SWA yes and yes the cabins will propably has boards in them so 30ma protected there.

but need the 100ma upfront as will be a TT for a construction site

but my query is more re tail entry into a metal board on TT.
is just using a plastic gland and a tail clamp satisfactory
 

cliffed

Regular EF Member
Obviously joking,why would you even think of installing a plastic DB,that’s really so old fashioned.
 

anthonybragg

Electrician's Arms
the subs will likely be SWA yes and yes the cabins will propably has boards in them so 30ma protected there.

but need the 100ma upfront as will be a TT for a construction site

but my query is more re tail entry into a metal board on TT.
is just using a plastic gland and a tail clamp satisfactory
Would you not consider a 100mA time delayed RCD?
EDIT----Apologies in post one you said T/Delayed it had gone from the next post but assume still being so. Metal or plastic preferably a IP one.
 
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