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I have a complex domestic - incomer is to a primary board in a pump house, main house is fed from a sub board via a 50m 35/3 SWA on a DP B63 (+ shunt). Two other sub boards, plus a load of dedicated radials all doing various 'heavy' services like water plant, ground source etc.
Being a new build it's full of LED downlights, and whenever something 'chunky' (take your pick out of various pumps, motors etc around the place) elsewhere starts up they all flicker. Paper calculations say I'm well within VD limits on all circuits (1.8% on the house), and all connections are tight. I'd originally thought it was an inductance issue until I also noticed today that the oven firing will also produce the same effect.
The problem is cross-boards (so a load on DB3 will affect DB2, for example) so it's a site wide issue.
My thoughts are either that the electronics in these LED's (Robus) are particularly sensitive or that they're somehow being affected by the pole transformer that feeds the place.
Given the practical/cost restraints of this being a domestic, if I fit surge protection to the three lighting circuits am I likely to see anything of any real value with this problem or can anyone see another obvious thing that I've overlooked?
Being a new build it's full of LED downlights, and whenever something 'chunky' (take your pick out of various pumps, motors etc around the place) elsewhere starts up they all flicker. Paper calculations say I'm well within VD limits on all circuits (1.8% on the house), and all connections are tight. I'd originally thought it was an inductance issue until I also noticed today that the oven firing will also produce the same effect.
The problem is cross-boards (so a load on DB3 will affect DB2, for example) so it's a site wide issue.
My thoughts are either that the electronics in these LED's (Robus) are particularly sensitive or that they're somehow being affected by the pole transformer that feeds the place.
Given the practical/cost restraints of this being a domestic, if I fit surge protection to the three lighting circuits am I likely to see anything of any real value with this problem or can anyone see another obvious thing that I've overlooked?